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Study on determination of environmental pollutants(nitrophenols)
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《Journal of Environmental Sciences》 SCIE EI CAS CSCD 1997年第4期43-48,共6页
Studyondeterminationofenvironmentalpolutants(nitrophenols)YuYong,ZhangZhenman,PanXunxi,LiChanglin,HouHuiqiEn... Studyondeterminationofenvironmentalpolutants(nitrophenols)YuYong,ZhangZhenman,PanXunxi,LiChanglin,HouHuiqiEnvironmentalScienc... 展开更多
关键词 Study on determination of environmental pollutants NITROPHENOLS
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A Comparative Study of Sister Carrie and Xiangzi Based on Environmental Determinism
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作者 HUANG Linling YAN Chunmei 《Sino-US English Teaching》 2021年第9期261-265,共5页
Dreiser’s Sister Carrie and Lao She’s Camel Xiangzi are two classic novels.Both of them demonstrate the decisive influence of environmental factors on the characters’destiny.This paper tries to explore their tragic... Dreiser’s Sister Carrie and Lao She’s Camel Xiangzi are two classic novels.Both of them demonstrate the decisive influence of environmental factors on the characters’destiny.This paper tries to explore their tragic fates comparatively based on environmental determinism.Actually,the two protagonists of two novels were both dream chasers in social changes at first,and then they transformed into strugglers under the oppression of patriarchy and biological power,and eventually they became victims of the social values under the fateful role of the environment.Obviously,the fights between the two protagonists and the environment have certain enlightening effects on current human life and the process of urbanization. 展开更多
关键词 environmental determinism Sister Carrie Xiangzi comparative study
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Environmental efficiency and its determinants in the development of China's western regions in 2000-2014
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作者 Chuanbin Yin 《Chinese Journal of Population,Resources and Environment》 2017年第2期157-166,共10页
In this study, we measure the environmental efficiency of western China in 2000-2014 by the super-efficiency slacks-based measure model which considers the undesirable outputs. The results show that the environmental ... In this study, we measure the environmental efficiency of western China in 2000-2014 by the super-efficiency slacks-based measure model which considers the undesirable outputs. The results show that the environmental efficiency of western China is low and rank behind in the national level. The environmental efficiency is lower than the traditional efficiency which reflects that the economic growth in 2000-2014 has paid high environmental costs. The difference between the traditional efficiency and environmental efficiency experienced "inverted U"-type trend change. The environmental efficiency of the western provinces presented differentiated developing trend and the differences between the western provinces were enlarging. The environmental efficiency of the western regions was not only lower than that in the eastern regions with a big gap but also lower than that in the central regions. Through the convergence test, we found that the environmental efficiency gap between the western and the eastern regions was gradually expanding; meanwhile, the environmental efficiency gap between the central and the western regions was narrowing. This paper also analyzes the determinants of environmental efficiency by the tobit model and then addresses. 展开更多
关键词 Western China environmental efficiency super-efficiency SBM determinants
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Spatial risk assessment of opium poppy cultivation in Afghanistan: integrating environmental and socio-economic drivers 被引量:1
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作者 Stefan Kienberger Raphael Spiekermann +2 位作者 Dirk Tiede Irmgard Zeiler Coen Bussink 《International Journal of Digital Earth》 SCIE EI 2017年第7期719-736,共18页
Recently the cultivation of opium poppy in Afghanistan reached unprecedented levels.It is agreed that the complex and coupled interactions of social,economic and environmental drivers are crucial for understanding the... Recently the cultivation of opium poppy in Afghanistan reached unprecedented levels.It is agreed that the complex and coupled interactions of social,economic and environmental drivers are crucial for understanding the spatial and temporal dynamics of opium poppy cultivation in Afghanistan.In this context,we present an integrated risk concept,which considers environmental and socio-economic drivers of opium poppy cultivation.A set of spatially explicit indicators for the environmental suitability and socio-economic vulnerability was established and populated from a variety of databases.Subsequently,novel methods of modelling homogeneous and spatially explicit regions of opium poppy cultivation suitability,socio-economic vulnerability and risk are developed and applied.The risk assessment results demonstrate the complex nature of the illicit crops production in Afghanistan and prompt a more profound examination of the drivers of opium poppy cultivation in a spatial context.The study also confirms what has already been widely discussed in literature:that reasons for cultivation are spatially diverse and often distinct,meaning that any formulation of generalized explanations cannot be drawn without ignoring a more complex reality.Thus,an integrative spatial view of risk,which integrates the social dimension as well as environmental parameters,is required to better identify context-specific intervention measures. 展开更多
关键词 Opium poppy risk social and environmental determinants integrated modelling policy support REGIONALIZATION integrated geons
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Biomass and carbon dynamics of a tropical mountain rain forest in China 被引量:20
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作者 CHEN DeXiang LI YiDe +5 位作者 LIU HePing XU Han XIAO WenFa LUO TuShou ZHOU Zhang LIN MingXian 《Science China(Life Sciences)》 SCIE CAS 2010年第7期798-810,共13页
Biometric inventories for 25 years,from 1983 to 2005,indicated that the Jianfengling tropical mountain rain forest in Hainan,China,was either a source or a modest sink of carbon.Overall,this forest was a small carbon ... Biometric inventories for 25 years,from 1983 to 2005,indicated that the Jianfengling tropical mountain rain forest in Hainan,China,was either a source or a modest sink of carbon.Overall,this forest was a small carbon sink with an accumulation rate of(0.56±0.22) Mg C ha-1yr-1,integrated from the long-term measurement data of two plots(P9201 and P8302).These findings were similar to those for African and American rain forests((0.62±0.23) Mg C ha-1yr-1).The carbon density varied between(201.43±29.38) Mg C ha-1 and(229.16±39.2) Mg C ha-1,and averaged(214.17±32.42) Mg C ha-1 for plot P9201.Plot P8302,however,varied between(223.95±45.92) Mg C ha-1 and(254.85±48.86) Mg C ha-1,and averaged(243.35±47.64) Mg C ha-1.Quadratic relationships were found between the strength of carbon sequestration and heavy rainstorms and dry months.Precipitation and evapotranspiration are two major factors controlling carbon sequestration in the tropical mountain rain forest. 展开更多
关键词 Jianfengling tropical mountain rain forest BIOMASS carbon storage environmental determinants
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