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Environmental and Climate Justice in Palestine
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作者 Jad Isaac Jane Hilal 《American Journal of Climate Change》 2024年第2期251-280,共30页
To have a clean, safe, and functional environment is not only essential for the purpose of preservation, but also imperative for safeguarding the most fundamental of human rights. Resolution 45/94 of the United Nation... To have a clean, safe, and functional environment is not only essential for the purpose of preservation, but also imperative for safeguarding the most fundamental of human rights. Resolution 45/94 of the United Nations (UN) General Assembly also stresses and acknowledges that: “all individuals are entitled to live in an environment adequate for their health and wellbeing” (United Nations Digital Library System, 1991). Environmental and climate justice, which: “emerged in the context of the local environmental struggles of directly oppressed groups”, is a global movement dedicated to ensuring equal protection of people’s human rights (i.e., water, health, life, etc.) in the face of the climate crisis. Moreover, health, environment and human rights are part of the 2030 agenda (in particular, SDG 1, SDG 5, SDG 6, SDG 7, SDG 13, SDG 16, SDG 17). Individually, both environmental and climate justice are rooted in an intersectional outlook, by which they highlight the common threads between communities and the people’s inclusion, irrespective of race, class, or gender, in the pursuit of justice. On the other hand, they recognise and acknowledge the role and consequences of climate change in economic, social, and political dimensions;thus, drawing emphasis on the rights of people under the emerging inequities. In the case of Palestine, the Palestinian community is increasingly becoming vulnerable to these effects and the resulting inequalities of climate change. This vulnerability stems from: 1) The right to life;clean WASH;equitable work opportunities;access to resources;and free movement;are all examples of human rights that the Israeli colonial regime infringes upon;2) Infrastructure is essential for climate adaptation: 61% of the West Bank is ultimately barred from building infrastructure (B’Tselem, 2019) and Gaza Strip has major gaps in infrastructure due to intentional destruction by Israel;3) Palestinian deprivation of the sovereign right to natural resources by Israel;4) Apartheid system in water accessibility: Israeli water usage per person is over three times higher than that of Palestinians (their usage is under the WHO recommended minimum per day) (B’Tselem, 2023);and 5) Violent settler attacks. In 2022 alone, the Applied Research Institute-Jerusalem (ARIJ) recorded 1527 settler attacks that targeted land, properties, livestock, agriculture and even Palestinian civilians. The ongoing neglect of these concerns and the persistent colonization of Palestine by Israel unequivocally and unwaveringly affect the human rights of Palestinians. The power dynamics at play especially hamper the Palestinian ability to exercise and fulfill their inalienable human rights and to tackle the obstacles to justice in their environment. 展开更多
关键词 environmental Degradation Climate Change environmental and Climate Justice Human Rights Causes and Solution
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Examination of the poverty-environmental degradation nexus in Sub-Saharan Africa
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作者 Sadat Daaki SSEKIBAALA Twaha Ahmed KASULE 《Regional Sustainability》 2023年第3期296-308,共13页
The relationship between environmental degradation and poverty has increasingly become the focus of national strategic decision-making in recent years.However,despite several theoretical explorations on the nexus,a de... The relationship between environmental degradation and poverty has increasingly become the focus of national strategic decision-making in recent years.However,despite several theoretical explorations on the nexus,a dearth of empirical literature on the poverty-environmental degradation nexus,specifically on Sub-Saharan Africa(SSA),still exists.In this study,we investigated the poverty-environmental degradation nexus in SSA.We hypothesized that poverty is both a cause and effect of environmental degradation,and this relationship is explained as a vicious cycle.Unlike previous studies,we employed several alternative indicators of environmental degradation to examine the poverty-environmental degradation nexus in this study.We used data from 41 countries of SSA between 1996 and 2019 and employed the generalized method of moments(GMM)approach.The findings suggest a cyclical relationship between poverty and environmental degradation in SSA,which confirms that an increase in poverty leads to an increase in environmental degradation,especially in deforestation and PM2.5 emissions.Similarly,the increase in environmental degradation positively affects poverty in SSA.We also confirmed that exogenous conditioning factors such as population growth rate,education,industrialization,and income inequality,institutional quality indicators such as governance effectiveness,control of corruption,freedom ad civil liberty,and democracy,and endogenous factors including fossil fuel energy use,fuelwood energy use,household health expenditure,infant mortality rate,and agriculture productivity influence the nexus between poverty and environmental degradation.The findings on the relationship between poverty and environmental degradation in SSA are a testimonial evidence that both poverty and environmental degradation are significant issues in SSA.Hence,poverty alleviation policies in SSA should not lead to PM2.5 emissions and deforestation,which may as well force people into a poverty-environmental degradation trap.Instead,poverty reduction policies should simultaneously achieve environmental conservation. 展开更多
关键词 environmental degradation POVERTY Vicious cycle hypothesis Sub-Saharan Africa Generalized method of moments(GMM)approach
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Economic complexity and environmental sustainability in eastern European economies:Evidence from novel Fourier approach
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作者 Dervis KIRIKKALELI Emrah SOFUOGLU +1 位作者 Kashif Raza ABBASI Kwaku ADDAI 《Regional Sustainability》 2023年第4期349-358,共10页
Globally,economies have become complex and new technologies have transformed and facilitated the modernization of economies.In the previous literature,economic complexity approach has become one of the popular tools i... Globally,economies have become complex and new technologies have transformed and facilitated the modernization of economies.In the previous literature,economic complexity approach has become one of the popular tools in the development and innovation studies of economic geography.Researchers have found that green technology and eco-innovation approaches should be used to decisively reduce the effects of carbon emissions on the environment.However,debates about the impact of economic complexity on environment remain unsettled since some emerging production technologies have far-reaching pollution effects.This study explored the impacts of economic complexity on environmental sustainability in Turkey using the novel Fourier-based approaches,namely:Fourier Augmented Dickey-Fuller(FADF)and Fourier Autoregressive-Distributed Lag(FARDL)models.The Fourier-based approaches indicated that all variables(economic complexity index(ECI),GDP,energy consumption,and CO_(2)emission(CO_(2)E))are cointegrated in the long run.Additionally,the FARDL model implied that(i)in the long run,the effect of ECI(as a proxy for economic complexity),GDP(as a proxy for economic growth),and energy consumption on CO_(2)E(as a proxy for environmental quality)are important;(ii)economic complexity decreases environmental degradation in Turkey;and(iii)economic growth and energy consumption negatively affect environmental quality.The results also showed that economic complexity could be used as a policy tool to tackle environmental degradation.The findings also revealed that the fossil fuelbased economy will continue to expand and undermine Turkey’s efforts to meet its net zero emission target by 2053.Therefore,policy-makers should take actions and establish diversified economic,environmental,and energy strategies.For policy insights,the Turkish governments can use the combination of tax exemptions and technical support systems to support knowledge creation and the diffusion of environmentally friendly technologies The governments can also impose strict environmental regulations on the knowledge development phases. 展开更多
关键词 Economic complexity environmental degradation CO_(2)emission(CO_(2)E) Fourier Autoregressive-Distributed Lag(FARDL) Fourier Augmented Dickey-Fuller(FADF) Economic complexity index(ECI) Turkey
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Residents’ perspectives and responses to environmental degradation in the upper Dadu River, eastern Tibetan Plateau 被引量:7
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作者 YAN Jianzhong ZHANG Yili +4 位作者 LIU Linshan BAI Wanqi ZHU Huiyi SHI Yulin ZHENG Du 《Journal of Geographical Sciences》 SCIE CSCD 2006年第3期293-305,共13页
Environmental degeneration in the Tibetan Plateau attracts worldwide attention, whereas case studies on how the residents understand and respond to environmental degeneration are scarce. Using a Participatory Rural Ap... Environmental degeneration in the Tibetan Plateau attracts worldwide attention, whereas case studies on how the residents understand and respond to environmental degeneration are scarce. Using a Participatory Rural Appraisal method, this paper investigates how the people in different regions in the upper Dadu River understand and respond to environmental degeneration, based on comparative field surveys in three villages, in which Danzamu village is chosen from villages in the valley region, Kerma village from mountainside region, Rico village from the mountain and plateau region. The results show that: (1) although awakened to environmental degeneration, the residents in different regions have different responses. As agricultural labors have been transferred to the secondary and tertiary industries, population pressure in Danzamu and Kerma villages is mitigated. Residents in Danzamu village actively respond to natural disasters and forest degradation, as their livelihoods never rely on forests and rangelands again. Whereas the residents in Kerma village negatively respond to natural disasters, forest and meadow degradation and the ruin of wildlife resources, as their livelihoods still rely on stockbreeding. Labors in Rico village are hard to transfer to the secondary and tertiary industries, so they have to raise more livestock to make a living. Active measures are just taken to avoid livestock loss, not to avoid forest and meadow degradation and the ruin of wildlife resources. So the most fragile region is the mountain and plateau region and mountainside region, not the valley region. (2) Livelihood strategy is the key factor affecting the residents to respond to population pressure and environmental degeneration. So the framework of sustainable livelihood strategy should be used to explain and intervene in issues of population pressure and environmental degradation in ecotones. (3) Transferring agricultural labors to the secondary and tertiary industries were favorable to improving people's livelihood. It is necessary to reduce the education fees to speed up the pace of labors transferring in the mountainside region. In the mountain and plateau region, preferable ways also include the development of towns, highways, education equipment and other establishments. 展开更多
关键词 environmental degradation RESPONSE the upper Dadu River livelihood strategy Tibetan Plateau
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The environmental prospects of cultured meat in China 被引量:5
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作者 SUN Zhi-chang YU Qun-li HAN Lin 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2015年第2期234-240,共7页
To deal with concerns in China about environmental degradation and a growth in population accompanied by increased consumption of livestock products, a meat alternative is required. This study compared the environment... To deal with concerns in China about environmental degradation and a growth in population accompanied by increased consumption of livestock products, a meat alternative is required. This study compared the environmental impacts of producing different protein sources for nutrition, including crops, livestock products, and cultured meat. The results showed that cultured meat has the lowest land use per unit of protein and unit of human digestible energy. China's crops have the lowest energy use and greenhouse gas(GHG) emissions per unit of energy and protein. The energy use in cultured meat production is slightly higher than that of current pork production in China, whereas GHG emissions are lower. It is concluded that the overall impact of replacing livestock products with cultured meat would be beneficial for China's environment and would potentially improve food security because less land is needed to produce the same amount of protein and energy. 展开更多
关键词 cultured meat in vitro environmental degradation livestock products greenhouse gas(GHG)
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Natural resources deterioration,environmental degradation and sustainable resetlement in Southwest China 被引量:5
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作者 WANG KelinNatural resources deterioration, environmentaldegradation and sustainable resettlement inSouthwest ChinaWANG KelinChangsha Institute of Agricultural Modernization, CAS, Hunan 410125 CHINA 《Journal of Geographical Sciences》 SCIE CSCD 1998年第2期39-48,共10页
As a consequence of increased population growth and environmental degradation, a particular type of population mobility-environmental migration-has emerged in the Third World. In this paper environmental migration is ... As a consequence of increased population growth and environmental degradation, a particular type of population mobility-environmental migration-has emerged in the Third World. In this paper environmental migration is defined and previous practices in some developing countries are reviewed. A case study of the Karst Region of Southwest China is used to illustrate the phenomenon, including root causes, restrictive factors, nature of the migration, desires of migrants, strategies of response and optional policies. It is argued that a comprehensive approach to the prevention of environmentally caused displacement should be developed. 展开更多
关键词 environmental degradation migration sustainable development policies karst topography Southwest China
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Water Environmental Degradation of the Source Area of the Yellow River on Northeast Qinghai-Tibet Plateau
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作者 Qi Shanzhong 1, Luo Fang 2 & Xiao Honglang 2 1 College of Population, Resources and Environment, Shandong Normal University, Jinan 250014, China 2 Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academic of Sciences, Lanzhou, 730000, China 《Chinese Journal of Population,Resources and Environment》 北大核心 2005年第3期34-36,共3页
The issue on water environmental degradation in the source area of the Yellow River has been one of very serious ecological and socially economic problems. The temporal-spatial changes of water environment led to the ... The issue on water environmental degradation in the source area of the Yellow River has been one of very serious ecological and socially economic problems. The temporal-spatial changes of water environment led to the decreasing of land capacity and river disconnecting. The status of water environmental degradation in this paper was analyzed based on the data and field investigation. The results indicated that the surface water area in the region has obviously decreased owing to the climate changes and human irrational use of water resources and the continuous lowering of the regional groundwater table and the steadily decreasing tendency of the flow rate in the source areas of the Yellow River. 展开更多
关键词 water environmental degradation decreasing of surface water continuous lowering of groundwater table the Yellow River region Qinghai- Tibet Plateau
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Sustainable Environmental Management:A Case of Assessment of Land Degradation Using Space Technologies in Longido District,Arusha Tanzania
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作者 Martine Hagai 《Journal of Environmental Science and Engineering(B)》 2019年第6期249-257,共9页
This study was conducted to assess land degradation in Longido District,Arusha,Tanzania using remote sensing techniques.Biophysical degradation indicators i.e.land use/land cover,land productivity level and soil erosi... This study was conducted to assess land degradation in Longido District,Arusha,Tanzania using remote sensing techniques.Biophysical degradation indicators i.e.land use/land cover,land productivity level and soil erosion were used.Specifically,Landsat Satellite images of 1995 and 2015,together with soil data and digital elevation model were applied.Land cover maps of the study area over the study years were produced by supervised classification method.Soil erosion was assessed using RUSLE(Revised Universal Soil Loss Equation)model producing soil erosion map of Longido district,the inputs into the RUSLE model were rainfall,erosivity factor,soil erodibility factor,slope steepness and slope length factor,cover management factor and support practice factor.Biophysical land degradation map was produced by applying weighted overlay technique whereby soil erosion was given more weight followed by land use/land cover of 2015 and land productivity level of 2015.The findings show that about 38% of Longido district areas are highly vulnerable to land degradation which is above the international allowable level.It is being concluded that Longido District is at high risk of failure to sustain livelihood of and resilient for its communities,the earth in general,so it is timely for the district authorities to take steps towards mitigating further land degradation.It is being recommended that sustainable conservation and management strategies as well as policies must be affected by district authorities including farmers and pastoralists to improvise land degradation friendly cultivation and grazing methods. 展开更多
关键词 environmental degradation anthropogenic activities land degradation biophysical factors
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Evaluation of Effluent Discharge from Steel Manufacturing Industries on the Proliferating Environmental Degradation in Nairobi Metropolitan in the Republic of Kenya
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作者 Patrick K. Kiongo Catherine Njoki Wahome +4 位作者 Peter Muli Muthama Jeniffer Muhonja Linah Ngumba Feisal Hassan Evans Momanyi 《Journal of Geoscience and Environment Protection》 2021年第9期198-226,共29页
The overall objective of this study was to establish the effects of steel industrial effluent on Nairobi metropolitan water system and its impact to the society. The study sought to identify various types of wastes pr... The overall objective of this study was to establish the effects of steel industrial effluent on Nairobi metropolitan water system and its impact to the society. The study sought to identify various types of wastes produced by factories, assess how the waste generated is managed and disposed</span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">,</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> examine the effects of effluent discharge on Nairobi River and finally propose mitigation measures. The research adopted a qualitative design and employed a number of methods: direct observations, document reviews to content analysis of the past studies, which in the end generated invaluable data. The study revealed that there are four categories of waste generated</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">:</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> solid waste, liquid waste, footbath chemicals as well as thermal wastes. It was also found that waste management in place w</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">as</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> not effective enough leading to water and soil pollution. Other causes of pollution were found out to emanate from gasses contamination to the air and chemicals used during steel processing. The findings will inform the community of the harmful effects of untreated water and how it impacts on their health and productivity. It will also help the stakeholders in the environmental conservation to articulate issues of policy and influence agenda setting in the national and sub-national levels. 展开更多
关键词 Effluent Emissions environmental Assessment environmental Audits environmental Degradation environmental Standards Industrial Effluents POLLUTION Solid Waste
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Environmental impact of energy imports:Natural resources income and natural gas production profitability in the Asia-Pacific Economic Cooperation Countries
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作者 Aimin Pan Si Xu Syed Anees Haider Zaidi 《Geoscience Frontiers》 SCIE CAS CSCD 2024年第2期125-139,共15页
Environmental degradation is a pressing global concern,with the energy sector being one of the major contributors to this issue.The environmental impact of energy imports,particularly regarding natural resources incom... Environmental degradation is a pressing global concern,with the energy sector being one of the major contributors to this issue.The environmental impact of energy imports,particularly regarding natural resources income and natural gas production profitability,cannot be ignored.Countries must assess the environmental consequences of their energy choices and take steps to minimize their impact.By transitioning to cleaner and more sustainable energy sources,countries can ensure a better future for the environment and their economies.This study examines the impact of energy imports and natural resources income on environmental degradation in the Asia-Pacific Economic Cooperation(APEC)countries from 1990 to 2020,using revenue minus the production cost of natural gas and electricity production from renewable sources as moderating variables.Long-run estimates are derived using the Generalized Method of Moments and robust least squares.Our findings elucidate that importing energy from countries specializing in renewable energy can help reduce reliance on fossil fuels.This diversification of energy sources decreases the overall carbon footprint and contributes to a cleaner environment.Natural gas production often involves infrastructure construction,such as drilling rigs and pipelines,which can disrupt natural habitats and wildlife corridors.This destruction of ecosystems can have long-term consequences on biodiversity and ecological balance.The environmental impact of energy imports,particularly related to natural resource income and natural gas production profitability,requires BRICS countries to take proactive measures.These nations can address the environmental challenges associated with their energy demands by implementing policies prioritizing sustainable resource management,carbon pricing,stringent regulation,and investment in research and development.By doing so,they can balance economic growth and environmental sustainability,ensuring a greener future for the BRICS countries. 展开更多
关键词 Energy imports environmental degradation Natural resources income Renewable energy APEC countries
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ECOLOGICAL AND SOCIO-ECONOMIC REHABILITATION IN THE KARST OF SOUTHWEST CHINA 被引量:5
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作者 Cai Yunlong Department of Geography, Peking University, Beijing 100871 People’s Republic of China 《Journal of Geographical Sciences》 SCIE CSCD 1997年第2期24-32,共9页
The Karst of Southwest China is a typical representative of poverty stricken region with impoverishment-degradation spiral. To essentially break away from this vicious circle, the local ecology, economy and society s... The Karst of Southwest China is a typical representative of poverty stricken region with impoverishment-degradation spiral. To essentially break away from this vicious circle, the local ecology, economy and society should be rehabilitated, and hence to strengthen the self-development capacity building of the localities. Two considerations are stressed in this article: (1) Poverty alleviation is a system project with great complexities. Any single approach is difficult to success and integrated measures should be taken. (2) Some typical and feasible areas should be selected to demonstrate the project of poverty alleviation and ecological, socio-economic reconstruction. Then, they can be used as a model to promote the sustainable development of the whole region. Based upon these ideals, a project entitled “Reversal of Impoverishment-Degradation Spiral in the Karst of Southwest China' was proposed and has been listed in 《Priority Programme for China's Agenda 21》. 展开更多
关键词 poverty alleviation environmental degradation capacity building ecological and socio-economic rehabilitation karst areas Southwest China.
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Driving forces of land use and land cover change (LUCC) in the Zoige Wetland, Qinghai-Tibetan Plateau 被引量:7
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作者 GuangYin Hu ZhiBao Dong JunFeng Lu ChangZhen Yan 《Research in Cold and Arid Regions》 2012年第5期422-430,共9页
The Zoige Wetland is located in the northeastern Qinghai-Tibetan Plateau, which is highly sensitive to global environment change and human disturbance because of its high elevation and cold environment, thus, it's a ... The Zoige Wetland is located in the northeastern Qinghai-Tibetan Plateau, which is highly sensitive to global environment change and human disturbance because of its high elevation and cold environment, thus, it's a hotspot for land use and land cover change (LUCC) research. We used Landsat MSS images from 1975, Landsat ETM images from 2000, and Landsat TM images fi:om 1990 and 2005 to assess the LUCC in the study area, using GIS techniques, as well as topographic, vegetation, and soil maps combined with field investigations. The monitoring result shows that the study area's environment degraded rapidly between 1975 and 2005, including wetland shrinkage from 5,308 km2 to 4,980 lan2, sandy land expansion from 112 krn2 to 137 krn2, forest land decreasing from 5,686 km2 to 5,443 km2, and grassland degradation from 12,309 km2 to 10,672 km2. According to the analysis of meteorological data and social-economic statistical data, we concluded that the LUCC in the Zoige Wetland was caused by both natural and anthropogenic factors, but human activities were primarily responsible for the observed LUCC, thereby, we suggest human behaviors must be adjusted to control environmental degradation. 展开更多
关键词 Zoige Wetland LUCC remote sensing environmental degradation Qinghai-Tibetan Plateau
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Assessment of Plant Commnunity Structure in a Tropical Wetland Affected by Brick Making—The Case of Sironga Wetland, Kenya
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作者 Caren N. Atalitsa George M. Ogendi +1 位作者 John M. Mironga Nicholas Olekaikai 《Journal of Environmental Protection》 2021年第11期1001-1008,共8页
Brick making is one of the major small-scale industries in Sironga which has been expanding due to the growing demand for urban expansion. Due to the increasing population pressure, brick-making is competing for the w... Brick making is one of the major small-scale industries in Sironga which has been expanding due to the growing demand for urban expansion. Due to the increasing population pressure, brick-making is competing for the wetland resources. Sironga wetland is threatened with serious degradation and probable loss of plant diversity. Conversion of this wetland for economic uses such as brick making has resulted in its loss. The objective of the study was to assess the effects of brick making on plant diversity in Sironga wetland. Nyamira County, Kenya. A one metre by one metre quadrat frame was laid down and perpendicularly recorded the percent cover for each species found inside the quadrant plus the percentage area covered by the bare ground litter. From each transect lines “diagonally” detailed vegetation under study was then done. The plant species were recorded and classified into three life-forms;herbs, sedges and grasses. The study revealed that grasses had the highest diversity H = 1.144. Diversity for herbs was H = 0.987 and H = 0.899 for reeds respectively. The study concluded that brick-making activities affected the plant diversity in Sironga wetland. This may be attributed partly to the limited information and awareness campaigns to the surrounding communities on the values and benefits of wetland ecosystem services and the lack of alternative livelihood sources. The study recommends that alternative livelihoods are provided and awareness campaigns on the values and benefits of wetlands to the residents are done by the relevant agencies. 展开更多
关键词 Diversity Index Vegetation Types environmental Degradation
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The valuation of China’s environmental degradation from 2004 to 2017 被引量:3
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作者 Guoxia Ma Fei Peng +14 位作者 Weishan Yang Gang Yan Shuting Gao Xiafei Zhou Ji Qi Dong Cao Yue Zhao Wen Pan Hongqiang Jiang Hong Jing Guangxia Dong Minxue Gao Jingbo Zhou Fang Yu Jinnan Wang 《Environmental Science and Ecotechnology》 2020年第1期93-102,共10页
This paper aims to evaluate the cost of environmental degradation by adopting the conventional environmental economic methodology in China from 2004 to 2017 and summarize the change in both the causes and costs of Ch... This paper aims to evaluate the cost of environmental degradation by adopting the conventional environmental economic methodology in China from 2004 to 2017 and summarize the change in both the causes and costs of China’s environmental degradation.Results from this study revealed the following:i.The environmental degradation cost in China increased from 511 billion yuan to 1,892 billion yuan from 2004 to 2017,and its share in the GDP decreased from 3.05% to 2.23%;ii.The environmental degradation cost growth rate was lower than the GDP growth rate.The environmental degradation cost growth rate decreased sharply,by dropping from 10% in 2014 to 2% in 2017.The environmental benefits of industrial transformation have emerged;iii.The provinces of Shandong,Hebei,Jiangsu,Henan,and Guangdong had the highest environmental degradation costs.The annual average growth rate of the environmental degradation costs in Jiangsu,Guangdong,and Zhejiang were lower than their growth rate of the GDP respectively;iv.Consideration of environmental degradation cost in decision-making could contribute to the high-quality development of China. 展开更多
关键词 environmental degradation cost Water pollution degradation cost Air pollution degradation cost Solid waste land occupation cost Green GDP
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Chlorination pattern effect on thermodynamic parameters and environmental degradability for C_(10)-SCCPs: Quantum chemical calculation based on virtual combinational library 被引量:2
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作者 Yuzhen Sun Wenxiao Pan +2 位作者 Yuan Lin Jianjie Fu Aiqian Zhang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2016年第1期184-197,共14页
Short-chain chlorinated paraffins(SCCPs) are still controversial candidates for inclusion in the Stockholm Convention.The inherent mixture nature of SCCPs makes it rather difficult to explore their environmental beh... Short-chain chlorinated paraffins(SCCPs) are still controversial candidates for inclusion in the Stockholm Convention.The inherent mixture nature of SCCPs makes it rather difficult to explore their environmental behaviors.A virtual molecule library of 42,720 C10-SCCP congeners covering the full structure spectrum was constructed.We explored the structural effects on the thermodynamic parameters and environmental degradability of C10-SCCPs through semi-empirical quantum chemical calculations.The thermodynamic properties were acquired using the AM1 method,and frontier molecular orbital analysis was carried out to obtain the EHOMO,ELUMO and ELUMO-EHOMO for degradability exploration at the same level.The influence of the chlorination degree(NCl on the relative stability and environmental degradation was elucidated.A novel structural descriptor,μ,was proposed to measure the dispersion of the chlorine atoms within a molecule.There were significant correlations between thermodynamic values and NCl,while the reported NCl-dependent pollution profile of C10-SCCPs in environmental samples was basically consistent with the predicted order of formation stability of C10-SCCP congeners.In addition,isomers with largeμ showed higher relative stability than those with small μ.This could be further verified by the relationship between μ and the reactivity of nucleophilic substitution and · OH attack respectively.The C10-SCCP congeners with less Cl substitution and lower dispersion degree are susceptible to environmental degradation via nucleophilic substitution and hydroxyl radical attack,while direct photolysis of C10-SCCP congeners cannot readily occur due to the large ELUMO-EHOMO values.The chlorination effect and the conclusions were further checked with appropriate density functional theory(DFT) calculations. 展开更多
关键词 Short-chain chlorinated paraffins(SCCPs) Virtual combinational library Chlorination degree Chlorination dispersion Thermodynamic properties environmental degradability
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Zn-0.8Mn alloy for degradable structural applications:Hot compression behaviors,four dynamic recrystallization mechanisms,and better elevated-temperature strength
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作者 Meng Li Zhang-Zhi Shi +2 位作者 Qiang Wang Yang Cheng Lu-Ning Wang 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2023年第6期159-175,共17页
Environmentally degradable Zn-0.8Mn alloy is highly ductile,which lays the foundation for developing high-performance Zn-Mn-based alloys.However,not only constitutive equation of this alloy is unknown,but also its dyn... Environmentally degradable Zn-0.8Mn alloy is highly ductile,which lays the foundation for developing high-performance Zn-Mn-based alloys.However,not only constitutive equation of this alloy is unknown,but also its dynamic recrystallization(DRX)behavior is unclear,which makes optimization of hot pro-cessing parameters of this alloy almost dependent on trial-and-error.This work aims to tackle these prob-lems.The constitutive equation was deduced to be˙ε=1.38×10^(12)×[sinh(0.009σ)]^(8)exp(-135150/RT).A processing map of the alloy was obtained for the first time,which shows that it has excellent hot formability with narrow instability zones.At a final true strain of 0.8,the volume fraction of DRX grains increased from 37%to 79%with temperature increasing from 150℃to 350℃and strain rate decreas-ing from 10 s^(−1)to 10^(-3)s^(−1).Discontinuous DRX(DDRX),continuous DRX(CDRX),twinning-induced DRX(TDRX),and particle stimulated nucleation(PSN)were activated during hot compressions.DDRX was al-ways the main mechanism.TDRX was completely suppressed at 300℃and above.PSN arose from dis-persed MnZn 13 particles.Furthermore,Zn-0.8Mn alloy exhibited elevated-temperature strengths better than pure Zn and Zn-Al-based alloys.At 300℃and 0.1 s^(−1),its peak stress was 1.8 times of pure Zn,owing to MnZn 13 particles of 277±79 nm impeding the motion of grain boundaries and dislocations. 展开更多
关键词 environmentally degradable Zn-0.8Mn alloy Hot deformation DRX Constitutive equations Microstructure
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Atomic insight into the functionalization of cellulose nanofiber on durability of epoxy nanocomposites
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作者 Tiejun Liu Kexuan Li +3 位作者 Ao Zhou Zechuan Yu Renyuan Qin Dujian Zou 《Nano Research》 SCIE EI CSCD 2023年第2期3256-3266,共11页
Chemical functionalization is an effective approach to address interfacial deterioration caused by environmental exposure in cellulose nanofiber(CNF)-epoxy nanocomposites.However,how functionalization affects interfac... Chemical functionalization is an effective approach to address interfacial deterioration caused by environmental exposure in cellulose nanofiber(CNF)-epoxy nanocomposites.However,how functionalization affects interfacial deterioration and durability of nanocomposites in erosive environment is still lacked.In this work,the global mechanical properties and local interfacial intermolecular behavior of pristine and functionalized CNF-reinforced nanocomposites are investigated through molecular dynamics simulations.The results show that functionalization can enhance the interfacial energy barrier and debonding stress by 43%and 57%,respectively.Functionalized CNF inhibits the slippage of epoxy chains,ensuring better interfacial adhesion and efficient stress transfer between fiber and matrix.Functional groups promote the formation of interfacial bridging and topological structures and weaken the hydrogen bonding ability of water molecules,leading to stronger intermolecular adsorption effect and better interfacial integrity.The epoxy molecular configuration evolution and intermolecular interactions,caused by the functionalization of CNF in the interfacial region,enhance the interfacial erosion resistance,contributing to the durability of the nanocomposites.This study reveals the in-depth interfacial deterioration mechanism of functionalized nanocomposites under erosive environment,inspiring a novel strategy for the design of durable CNF-reinforced nanocomposites. 展开更多
关键词 nanocomposites FUNCTIONALIZATION interfacial interaction environmental degradation durability enhancement molecular dynamics
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Waste production in aquaculture:Sources,components and managements in different culture systems 被引量:22
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作者 Akeem Babatunde Dauda Abdullateef Ajadi +1 位作者 Adenike Susan Tola-Fabunmi Ayoola Olusegun Akinwole 《Aquaculture and Fisheries》 2019年第3期81-88,共8页
The intensification of aquaculture has emerged as a viable alternative for increasing aquaculture production due to competition that arose from the use of natural resources,such as land and water,by other production a... The intensification of aquaculture has emerged as a viable alternative for increasing aquaculture production due to competition that arose from the use of natural resources,such as land and water,by other production and developmental sectors.However,intensification demands increased inputs,such as fish and feed per unit culture area and,therefore,increased waste generation from the aquaculture production systems.The impact of waste products from aquaculture has increased public concern and threatens the sustainability of aquaculture practices.The need for increasing the production of aquaculture products cannot be overemphasized and,therefore,there is a need to develop culture systems that will increase fish production with efficient waste management in order to limit environmental degradation resulting from aquaculture wastes and ensure its sustainability.This paper reviewed various aspects of waste production from aquaculture,their sources,components,and methods of management,in different culture systems,primarily discussing waste production from feed,chemicals,and pathogens.We aimed to establish the sources of wastes,their contents,and potential harms to both the fish culture and the environment.Suggestions for managing wastes in different culture systems were made to ensure an improved and sustainable aquaculture production. 展开更多
关键词 Fish farming Aquaculture effluents environmental degradation Waste management Sustainable aquaculture
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Assessment of Soil Salinity Risk on the Agricultural Area in Basrah Province,Iraq:Using Remote Sensing and GIS Techniques 被引量:1
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作者 Mushtak T Jabbar 周敬宣 《Journal of Earth Science》 SCIE CAS CSCD 2012年第6期881-891,共11页
This study presents an integrated study of expansion process of salinized land in Basrah Province, a typical salt-affected area in southern parts of Iraq, by using geo-information techniques. Satellite images (Landsa... This study presents an integrated study of expansion process of salinized land in Basrah Province, a typical salt-affected area in southern parts of Iraq, by using geo-information techniques. Satellite images (Landsat TM 1990) and thematic maps (ETM 2003) were used to provide comprehen- sive views of surface conditions such as vegetation cover and salinization detection. With ERDAS soft- ware, the normalized differential salinity index (NDSI) and salinity index (SI) were computed and then evaluated for soil degradation by salinization. ARC/INFO software was used along with field observa- tion data (global positioning system) for analysis. During the past 13 years, the salinized land in study area increased by 6 579.1 km2 and in 2003 covered 34.5% of the total area; in the meantime, vegetation cover has decreased by 4 595.9 km2 and in 2003 covers only 24.1% of the study area. Environmental changes show that, between 1990 and 2003, 37.5% of vegetation cover and 45.9% of marshlands were transformed into salty meadow and wet salty crust, respectively. In addition, there was 16.6% of sand lands converted into dry puffy salty crust. Results using spatial analysis methods showed that 7 894.9 km2 (41.4%) of land had no risk of environment degradation by soil salinity, 4 595.9 km2 (24.1%) bad slight risk, 4 042.8 km2 (21.2%) had moderate risk, and 2 536.3 km2 (13.3%) of the total land area was at a high risk of environment degradation by soil salinity. In conclusion, the study area was ex- posed to a high risk of soil salinity. 展开更多
关键词 environmental degradation soilsalinity risk remote sensing GIS Iraq.
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Surfaced-modified TiO_(2) Nanofibers with Enhanced Photodegradation Under Visible Light
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作者 PENG Hao JIANG Jiaxin +3 位作者 LIUYifang WANG Xiang LI Wenwang ZHENG Gaofeng 《Chemical Research in Chinese Universities》 SCIE CAS CSCD 2022年第6期1475-1481,共7页
Asynchronized surface modification method based on coaxial electrospinning was developed to fabricate high-efficiency photodegradative nanofiber for water purification. TiO_(2) nanoparticles assembled uniformly on the... Asynchronized surface modification method based on coaxial electrospinning was developed to fabricate high-efficiency photodegradative nanofiber for water purification. TiO_(2) nanoparticles assembled uniformly on the surface of polycaprolactone(PCL) nanofibers to form composite nanofibers through one step process. The maximal content of Ti element was 25.6%(mass fraction) in the PCL/TiO_(2) composite nanofibrous membrane, which exhibited hydrophilicity and excellent photodegradation under visible light in water. The Rhodamine B dye degraded 96.17% in 120 min under visible light by the PCL/TiO_(2) composite membrane. The adsorption behavior fitted Langmuir model well and indicated chemical related adsorption. This PCL/TiO_(2) composite nanofibrous membrane has super degradation properties and displays great application potential to environmental protection. 展开更多
关键词 NANOPARTICLE environmental degradation Surface property ELECTROSPINNING
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