期刊文献+
共找到19篇文章
< 1 >
每页显示 20 50 100
Differentiated payments for environmental services schemes: A methodology proposal
1
作者 Carlos R.AGUILAR-GóMEZ Sergio FRANCO-MAASS Tizbe T.ARTEAGA-REYES 《Journal of Mountain Science》 SCIE CSCD 2018年第8期1693-1710,共18页
Payment schemes for environmental services face serious budget constraints in Mexico. Payments are equally distributed among forest owners, and the governmental agencies that make payments to beneficiaries do not eval... Payment schemes for environmental services face serious budget constraints in Mexico. Payments are equally distributed among forest owners, and the governmental agencies that make payments to beneficiaries do not evaluate the amount of environmental services produced by forested areas. This lack of evaluation could lead to economic and environmental deficiencies that restrict the possible benefits of such programmes. In general, these programmes do not achieve their conservation objectives, and local beneficiaries are not involved in the design or application of these programmes. Similarly, the Payments for Hydrological Environmental Services(PHES) programme of the State of Mexico, Mexico, makes equal payments to beneficiaries of forested areas considering tree density. The objective of the present work was to create a methodology for determining differentiated payments schemes for hydrological environmental services, prioritising areas that contribute the most to groundwater recharge and promote the participation of society. In the Nevado de Toluca Natural Protected Area, the environmental criteria of forest type, tree density and aquifer overexploitation as well as social participation were considered in a multi-criteria analysis implemented in a Geographic Information System. A methodology was developed to determine differentiated payments based on specific forest characteristics that influence the potential capacity of forests to recharge groundwater reserves in addition to the level of social participation. In particular, social participation is key as it could ensure the viability of PHES programmes as conservation alternatives in forested areas with high groundwater recharge potential. 展开更多
关键词 Differentiated payments environmental services Mountain systems Multi-criteria analysis Social participation
下载PDF
Mobile Ubiquitous Service Environment 被引量:12
2
作者 Zhang Ping,Ji Yang,Feng Zhiyong (Research Center for Wireless New Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China) The Mobile Ubiquitous Service Environment (MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience (ABE),represents the major development trend for the next generation mobile wireless network. Research on MUSE will involve the integration of the computing model system,service platform system,operating system and terminal structure system,all of which involve exploration and innovation of a new networking structure,its control and management as well as way of measuring. The change in network resources triggers the change in network computing models. To let readers have a basic understanding of MUSE,this lecture introduces it in four sections. This section focuses on the development and demand analysis of the service platform. 《ZTE Communications》 2007年第2期58-60,共3页
The Mobile Ubiquitous Service Environment (MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience (ABE),represents the m... The Mobile Ubiquitous Service Environment (MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience (ABE),represents the major development trend for the next generation mobile wireless network. Research on MUSE will involve the integration of the computing model system,service platform system,operating system and terminal structure system,all of which involve exploration and innovation of a new networking structure,its control and management as well as way of measuring. The change in network resources triggers the change in network computing models. To let readers have a basic understanding of MUSE,this lecture introduces it in four sections. This section focuses on the development and demand analysis of the service platform. 展开更多
关键词 Mobile Ubiquitous Service environment GPP
下载PDF
Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir:a case study for ecosystems valuation and environmental management 被引量:1
3
作者 Hu Yanxia Zhou Liandi +1 位作者 Dong Xiaobin Yan Maochao 《Ecological Economy》 2007年第4期381-392,共12页
To build the artificial forest ecosystem is the major eco-economic development model in the watershed of Miyun Reservoir. It is very important to evaluate the benefits of those ecosystems. Emergy theories are very hel... To build the artificial forest ecosystem is the major eco-economic development model in the watershed of Miyun Reservoir. It is very important to evaluate the benefits of those ecosystems. Emergy theories are very helpful for us to establish a science-based assessment framework. Emergy evaluation of the artificial forest ecosystems in the watershed of Miyun Reservoir is used to asses the relative values of several ecological functions (sometimes called ecosystem services) and main ecosystem storages (sometimes called natural capital). The main driving energies, internal processes and storages are evaluated. The main functions, including transpiration, GPP and infiltration, are evaluated, which are 609em$/ha/yr, 6,245em$/ha/yr and 340em$/ha/yr respectively. The total values of major environmental services are 4,683em$/ha/yr in the artificial forest ecosystem. The main storages of natural capital including live biomass, soil moisture, organic matter, underground water and landform are estimated, which are 112,028em$/ha, 9em$/ha, 40,718em$/ha, 34em$/ha and 6,400,514em$/ha respectively. The largest value is landform, which accounts for 97.7% of these calculated total emdollar values. The concept of replacement value is explored using the emergy values of both ecosystem services and natural capital. The total calculated replacement values are 302,160em$/ha. 展开更多
关键词 Artificial forest ecosystems Emergy evaluation environmental services Natural capital
下载PDF
Semantic QoS Ontology and Semantic Service Ranking Approach for IoT services
4
作者 Nwe Nwe Htay Win Jian-Min Bao +1 位作者 Gang Cui Purevsuren Dalaijargal 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2014年第6期102-112,共11页
Due to a rapid increase in the number of functionally equivalent web services at open and dynamic Io T service environment,Qo S has become a major discrimination factor to reflect the user's expectation and experi... Due to a rapid increase in the number of functionally equivalent web services at open and dynamic Io T service environment,Qo S has become a major discrimination factor to reflect the user's expectation and experience of using a service.There are different languages and models for expressing Qo S advertisements and requirements among service providers and consumers.Therefore,it leads to the issues of semantic interoperability of Qo S information and semantic similarity match between a semantic description of the service being requested by the service consumer,and a formal description of the service being offered by the service provider.In this paper,we propose a hierarchical two-layer semantic Qo S ontology to promote the description and declaration of Qo S-based service information in detail for any domain and application.And,we develop a semantic matchmaking algorithm to compare the web services according to their Qo S information and adopt analytical hierarchy process( AHP) to make decision for the ranked services depending on the Qo S criteria.The comparison study and experimental result show that our proposed system is superior to other service ranking approaches. 展开更多
关键词 IoT service environment semantic QoS ontology semantic matchmaking algorithm QoS-based service information analytical hierarchy process
下载PDF
Mobile Ubiquitous Service Environment(3)
5
作者 Zhang Ping,Ji Yang,Li Yinong (Research Center for Wireless New Technology,Beijing University of Posts and Telecommunications,Beijing 100876,China) 《ZTE Communications》 2007年第3期57-60,共4页
The Mobile Ubiquitous Service Environment (MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience (ABE),represents the m... The Mobile Ubiquitous Service Environment (MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience (ABE),represents the major development trend for the next generation mobile wireless network. Research on MUSE will involve the integration of the computing model system,service platform system,operating system and terminal structure system,all of which involve exploration and innovation of a new networking structure,its control and management as well as its measurement. The change in network resources triggers the change in network computing models. To let readers have a basic understanding of MUSE,this lecture introduces MUSE in four sections. This section focuses on the system structure of the MUSE service platform. 展开更多
关键词 BSS Mobile Ubiquitous Service environment SCE FIGURE ABE SDE OSS
下载PDF
On the Extent of Environmental Health
6
作者 Gonzalo A. Ordóñez 《Open Journal of Preventive Medicine》 2021年第5期169-191,共23页
<strong>Background:</strong> Main purpose of this article is to offer information, criteria and conceptual proposals that could clarify the extent or scope of environmental health, and systematize the appr... <strong>Background:</strong> Main purpose of this article is to offer information, criteria and conceptual proposals that could clarify the extent or scope of environmental health, and systematize the approaches for its institutional stewardship by environmental health services. Hopefully, it will be useful to managers, professionals, technicians and academics involved in the management, implementation, teaching or research of this multidisciplinary field. <strong>Methods:</strong> The notion of “environment” is examined, a definition is proposed, and a look is taken at the “green” and “blue” sides of environmental problems. A number of understandings in various countries for “environmental health” are put forth and lists of basic areas for environmental health are analyzed. <strong>Results:</strong> One finding is that all lists are, in reality, unsystematic groupings of three different constituents: determinants, processes and functions. Consideration of these groupings leads to a homogeneous list of 18 areas and 77 sub-areas. Sets or series are provided for each type of constituent (64 determinants, 18 processes and 25 functions), and their aggregation forms the enormous universe of environmental health activities. On the other hand, certain rules of operation are proposed which make it possible, through a form of algebra, to construct expressions based on the provided sets of constituents. And it becomes possible to employ a common symbolic language for describing or assigning activities in the environmental health services. <strong>Conclusions:</strong> The article analyses the contemporaneous extent of environmental health. 展开更多
关键词 EH: environmental Health EHS: environmental Health services EHDet: Determinants EHPro: Processes Fct: Functions EHSA: EHS’ Activity Matrix
下载PDF
Mobile Ubiquitous Service Environment (4)
7
作者 Zhang Ping,Ji Yang,Feng Zhiyong(Wireless Technology Innovation institute,Beijing University of Posts and Telecommunications,Beijing 100876,China) 《ZTE Communications》 2007年第4期55-59,共5页
The Mobile Ubiquitous Service Environment(MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience(ABE),represents the maj... The Mobile Ubiquitous Service Environment(MUSE),established through the coordination and integration of mobile telecommunications and ubiquitous network,in the pursuit of Always Best Experience(ABE),represents the major development trend for the next generation mobile wireless network.Research on MUSE will involve the integration of the computing model system,service platform system,operating system and terminal structure system;and each involves exploration and innovation of a new networking structure,its control and management as well as its measurement.The change in network resources triggers the change in network computing models.To let readers have a basic understanding of MUSE,this lecture introduces MUSE in four sections.This section focuses on the MUSE network architecture and its key technologies. 展开更多
关键词 Mobile Ubiquitous Service environment ABE
下载PDF
Reflections on the Green Economy(Redemption of the Principles of Mill and Pigou):A View of a Brazilian Environmentalist
8
作者 Joao Batista Drummond Camara 《Journal of Environmental Protection》 2014年第12期1153-1168,共16页
The current context of global efforts in the pursuit of sustainable development can be characterized by the perception of the scientific-technological losses of ecosystems and ecosystem services and their consequences... The current context of global efforts in the pursuit of sustainable development can be characterized by the perception of the scientific-technological losses of ecosystems and ecosystem services and their consequences for the survival of humanity in the face of threats of imbalances in the basic conditions for survival such as food production, the environmental quality, natural control of pests and diseases, loses of biodiversity and climate changes. Some recent initiatives at global, regional and local level are pointed and some conceptual trends and deployment strategies advance towards the consolidation of the principles of sustainable development, despite several difficulties for effectively reaching its goals. The trend of gradual changes in the models of developing nations and in the patterns of production and consumption is portrayed objectively, seeking to correlate with principles of environmental economics and green economy, since Cecil Pigou and Stuart Mill principles to recent researches as Kenneth Boulding, Herman Daly, Nicholas Georgescu-Rogen, Franz Capra, Ignacy Sachs, Edgar Morin, beyond others. The ability of the United Nations and governments to intervene in neoliberal logic aiming wider benefit to society and the reduction of the negative effects of market distortions, as striking on the global stage, represents a true redemption of the principles advocated by Cecil Pigou, at the beginning of the last century, both for the global economy and for their effects on environmental and social conflicts, social exclusion resulting from the current economic systems which are not necessary new strategies, principles, or economic formulas, but decision making to tackle the market with seriousness to promote equity, social justice and environmental sustainability, without sacrificing progress and development, as evident in the current discussion of social inclusion and the convergence of individual and collective interests, so far in the development model based on increasing production and consumption, yet with little environmental responsibility. 展开更多
关键词 Principles of environmental Economics Green Economy Sustainable Development Productions and Consumption Patterns environmental services Anthropogenic Footprint
下载PDF
Effects of urban street trees on human thermal comfort and physiological indices: a case study in Changchun city, China 被引量:5
9
作者 Zhibin Ren Hongbo Zhao +2 位作者 Yao Fu Lu Xiao Yulin Dong 《Journal of Forestry Research》 SCIE CAS CSCD 2022年第3期911-922,共12页
Planting trees along urban streets is one of the most important strategies to improve the urban thermal environment.However,the net impacts of urban street trees on human thermal comfort and physiological parameters a... Planting trees along urban streets is one of the most important strategies to improve the urban thermal environment.However,the net impacts of urban street trees on human thermal comfort and physiological parameters are still less clear.On three similar east-west orientated streets with different degrees of tree cover-low(13%),medium(35%),and high(75%),urban microclimatic parameters and human physiological indices for six male students were simultaneously measured on three cloudless days in summer 2018.The results show that the differences in tree cover were predominant in influencing urban thermal environment and comfort.The street with the highest tree cover had significantly lower physiological equivalent temperature(PET) and more comfortable than the other two streets.The frequency of strong heat stress(PET> 35℃) was 64%,11 %,and 0%,respectively,for streets with low,medium,and high tree cover.For the six male university students,human physiological indices varied greatly across the three streets with different tree cover.Systolic blood pressure,diastolic blood pressure,and pulse rate increased with decreasing tree cover.The results also suggest that urban thermal environment and comfort had considerable impact on human physiological parameters.Our study provides reasons for urban planners to plant trees along streets to improve the thermal environment and promote urban sustainability. 展开更多
关键词 Urban forest Green space environmental ecosystem services Urban thermal comfort Blood pressure Pulse rate
下载PDF
Ethical Dimensions of Payment for Forest Environmental Services 被引量:1
10
作者 WU Shuirong 《Chinese Forestry Science and Technology》 2007年第1期42-56,共15页
The market-based incentive mechanism of payments for forest environmental services (PFES) seeks to capture part of the benefits derived from forest environmental services and channels them to forest resource owners/ma... The market-based incentive mechanism of payments for forest environmental services (PFES) seeks to capture part of the benefits derived from forest environmental services and channels them to forest resource owners/managers who generate these services, thus increases their incentives to conserve and manage forest resources. This paper examines some of the most important ethical issues entailed by PFES mechanism. The analysis shows that PFES may not always benefit the poor due to the comparative disadvantages of the poor and the complicated characteristics of forest ecosystem services. It is important and urgent to take ethical dimensions into account in the PFES approaches and design and develop the pro- poor payment mechanism in order to achieve the two objectives of forest conservation and economic development. 展开更多
关键词 payment for forest environmental services (PFES) ethical dimension EQUITY forest ethics
原文传递
Current Status and Progress of Market for Forest Environmental Services
11
作者 CHEN Yong CHEN Jie 《Chinese Forestry Science and Technology》 2006年第3期81-92,共12页
With the analyses of the reasons for the emergence of domestic and overseas markets for forest environmental service and its significance, this paper summarizes the progress in the research on the market and reviews t... With the analyses of the reasons for the emergence of domestic and overseas markets for forest environmental service and its significance, this paper summarizes the progress in the research on the market and reviews the operations of the markets for 4 kinds of forest environmental services that are watershed protection services, biodiversity protection services, carbon sequestration services and landscape services. At the end, the paper discusses the major problems arising in the creation of markets for environmental services and the developing tendency. 展开更多
关键词 MARKET forest environmental services watershed protection biodiversity protection carbon sequestration forest landscape
原文传递
Marketing Practice of Forest Environmental Services in China
12
作者 LIU CanChina National Forestry Economics and Development Research Center State Forestry Administration (SFA). Beiiine 100714. P.R. China 《Chinese Forestry Science and Technology》 2003年第4期58-63,共6页
The paper discusses marketing practice of forest environmental services in China, in accordance with Pigou's tax, governmental measures and market-based instruments are analyzed. The constrains and opportunities a... The paper discusses marketing practice of forest environmental services in China, in accordance with Pigou's tax, governmental measures and market-based instruments are analyzed. The constrains and opportunities are presented in the paper, and there is still a long way for China to establish better marketing practices for environmental services of forest resources. 展开更多
关键词 MARKETING environmental services EXTERNALITY forestry economics
原文传递
Payments for Grassland Ecosystem Services:A Comparison of Two Examples in China and Germany 被引量:2
13
作者 Sandra UTHES 李芬 +1 位作者 甄霖 曹晓昌 《Journal of Resources and Ecology》 CSCD 2010年第4期319-330,共12页
目前,草地生态系统退化成为全球关注的问题。生态补偿机制(PES)是为了草地生态系统的恢复/保护,采取补贴或支付费用的方式,改变使用者资源利用方式的制度安排。科学、合理的生态补偿制度需要全面地考虑可能出现的风险和挑战:如环境效益... 目前,草地生态系统退化成为全球关注的问题。生态补偿机制(PES)是为了草地生态系统的恢复/保护,采取补贴或支付费用的方式,改变使用者资源利用方式的制度安排。科学、合理的生态补偿制度需要全面地考虑可能出现的风险和挑战:如环境效益的滞后性,不可预见的监督、管理成本和社会经济目标(足额补偿标准、公平)的实现。本文的目标是通过中德两国生态补偿措施的对比(选取中国内蒙古锡林郭勒盟,德国勃兰登堡州为案例区域进行研究),为今后中德两国的生态补偿理论和实践提供依据。研究着重以下四个方面进行分析:中德两国生态补偿的实施框架,目标人群,实施效果评估等。研究结果表明,由于缺乏有效的激励机制,农户作为最基层的执行单位和实施者,其参与的主动性不够,中德两国生态补偿措施实施的成效有待提高。基于研究结果,提出了今后生态补偿项目设计中,中国应侧重于项目实施的监控和管理制度;而德国应在空间目标规划和具体管理措施和方式等方面进行完善。 展开更多
关键词 grassland ecosystem services payments for environmental services eco-compensation land degradation agri-environmental measures
原文传递
The net ecosystem services value in China's Mainland 被引量:3
14
作者 Shixiong CAO Yujie LIU +2 位作者 Wei SU Xinyi ZHENG Zhongqi YU 《Science China Earth Sciences》 SCIE EI CAS CSCD 2018年第5期595-603,共9页
Protection of the ecological environment is an effective strategy for maintaining ecosystem health,improving provision of ecosystem services,and increasing human well-being.However,traditional calculations of the valu... Protection of the ecological environment is an effective strategy for maintaining ecosystem health,improving provision of ecosystem services,and increasing human well-being.However,traditional calculations of the value of ecosystem services(VES)provide weak guidance because they ignore the costs of these services,leading to economically inefficient strategies.To understand the difference between VES and the net ecosystem services value(NES,after subtracting costs from VES)and to improve evaluations of ecosystem services,we estimated NES for China's Mainland(including farmland,grassland,forest,and wetland).NES totaled 10.0×10~3RMB ha^(-1)yr^(-1)in 2014,which is only 35.1%of the corresponding VES.Grassland NES was–0.7×10~3RMB ha^(-1)yr^(-1),in contrast with a positive grassland VES.NES of farmland,grassland,forest,and wetland in2014 totaled 7.2×10^(12)RMB,accounting for 27.0%of China’s GNP.Recent Chinese planning based on VES emphasizes forest conservation and ignores the conservation of other important ecosystems,such as grassland,leading to a continuing loss of China’s natural capital.Due to regional differences in economic conditions,resource endowments,and geographical characteristics,VES and NES differ among regions.To maximize the ecological benefits from conservation,it is necessary to account for these differences by comparing strategies based on NES,thereby choosing projects that maximize both economic and ecological benefits.To maintain the ecological balance,ecological restoration and socioeconomic activities should account for the costs of providing ecosystem services.This is essential to minimize the costs and maximize the benefits of projects. 展开更多
关键词 Ecosystem services Cost analysis environmental conservation Land management Ecological restoration
原文传递
Analysis of a Discrete-Time Geo/G/1 Queue in a Multi-Phase Service Environment with Disasters
15
作者 Tao JIANG 《Journal of Systems Science and Information》 CSCD 2018年第4期349-365,共17页
This paper considers a discrete-time Geo/G/1 queue in a multi-phase service environment,where the system is subject to disastrous breakdowns, causing all present customers to leave the system simultaneously. At a fail... This paper considers a discrete-time Geo/G/1 queue in a multi-phase service environment,where the system is subject to disastrous breakdowns, causing all present customers to leave the system simultaneously. At a failure epoch, the server abandons the service and the system undergoes a repair period. After the system is repaired, it jumps to operative phase i with probability qi, i = 1, 2 ···, n.Using the supplementary variable technique, we obtain the distribution for the stationary queue length at the arbitrary epoch, which are then used for the computation of other performance measures. In addition, we derive the expected length of a cycle time, the generating function of the sojourn time of an arbitrary customer, and the generating function of the server’s working time in a cycle. We also give the relationship between the discrete-time queueing system to its continuous-time counterpart. Finally,some examples and numerical results are presented. 展开更多
关键词 DISCRETE-TIME Geo/G/1 queue multi-phase service environment DISASTERS supplementary variable technique
原文传递
Upstream-downstream linkages of hydrological processes in the Himalayan region 被引量:3
16
作者 Santosh Nepal Wolfgang-Albert Flugel Arun Bhakta Shrestha 《Ecological Processes》 SCIE EI 2014年第1期51-66,共16页
Understanding the upstream-downstream linkages in hydrological processes is essential for water resources planning in river basins.Although there are many studies of individual aspects of these processes in the Himala... Understanding the upstream-downstream linkages in hydrological processes is essential for water resources planning in river basins.Although there are many studies of individual aspects of these processes in the Himalayan region,studies along the length of the basins are limited.This study summarizes the present state of knowledge about linkages in hydrological processes between upstream and downstream areas of river basins in the Himalayan region based on a literature review.The paper studies the linkages between the changes in the physical environment of upstream areas(land use,snow storage,and soil erosion)and of climate change on the downstream water availability,flood and dry season flow,and erosion and sedimentation.It is argued that these linkages are complex due to the extreme altitudinal range associated with the young and fragile geology,extreme seasonal and spatial variation in rainfall,and diversity of anthropogenic processes.Based on the findings,the paper concludes that integrated systems analysis is required to understand the holistic complexity of upstream-downstream linkages of hydrological processes in the river basin context.The integrated land and water resources management(ILWRM)approach can be instrumental in developing adaptive solutions to problems and can also enable stakeholders of upstream and downstream areas with various interests and needs to work together for the better utilization and management of land and water resources.As a part of this,the specific circumstances of the upstream communities,who live in fragile and inaccessible mountain areas with limited resource opportunities,should be taken into account so that incentive mechanisms can be established to encourage and acknowledge their contribution. 展开更多
关键词 Integrated land and water resources management Himalayan region Integrated systems analysis GEOINFORMATICS Physical linkages Value of environmental services
原文传递
Soil carbon sequestration,carbon markets,and conservation agriculture practices:A hypothetical examination in Mozambique 被引量:1
17
作者 Timoteo E.Simone Dayton M.Lambert +1 位作者 Ivan Cuvaca Neal S.Eash 《International Soil and Water Conservation Research》 SCIE CSCD 2017年第3期167-179,共13页
Payments for Environmental Services(PES)are relatively novel mechanisms whereby the adoption of sustainable management practices by a stakeholder is rewarded by incentives linked to external markets.Adoption of PES fo... Payments for Environmental Services(PES)are relatively novel mechanisms whereby the adoption of sustainable management practices by a stakeholder is rewarded by incentives linked to external markets.Adoption of PES for conservation agricultural practices(CAPS)by smallholder farmers may provide opportunities to increase household income or cover the technology costs of adoption if the carbon sequestration benefits of CAPS are quantifiable,adoption rates are accelerated and maintained,a mechanism exists whereby carbon sequestration services can be compensated,and carbon offset exchange markets are viable.This research suggests a methodology to examine a PES market for carbon offsets generated by the adoption of CAPS by farmers in Mozambique.Assuming a cumulative adoption of 60%over a 20-year period,revenue from PES market participation to CA adopters was two times higher than revenue earned when disadoption occurred midway through the simulation.Lower adoption targets are associated with higher per household returns when fertilizer rates typical to the region are increased.Establishing and maintaining a sustainable PES system in the study region would require significant investment in time and resources.The lack of on-the-ground institutions or local support for such a program would also challenge successful implementation.Finally,the programs where participant success depends on external markets,such as the hypothetical one suggested here,are subject to the ebb and flow of foreign demand for carbon offsets.Addressing these three broad constraints to a PES/CAPS program in the region would require grass-roots driven policy initiatives with buy-in at multiple social,economic,and political levels. 展开更多
关键词 Payment for environmental services Conservation agriculture adoption Carbon sequestration
原文传递
MDA-Based 3G Service Creation Approach and Telecom Service Domain Meta-Model 被引量:1
18
作者 QIAO Xiu-quan LI Xiao-feng LI Yan 《The Journal of China Universities of Posts and Telecommunications》 EI CSCD 2006年第2期54-60,共7页
This paper presents a model-driven 3G service creation approach based on model driven architecture technology. The focus of the paper is the methodology of designing telecommunication service-related meta-model and it... This paper presents a model-driven 3G service creation approach based on model driven architecture technology. The focus of the paper is the methodology of designing telecommunication service-related meta-model and its profile implementation mechanism. This approach enhances the reusability of applications through separation of service logic models from concrete open application programming interface technologies and implementation technologies. 展开更多
关键词 3G service creation environment MDA META-MODEL UML profile
原文传递
Evolving concepts and opportunities in soil conservation
19
作者 Julian Dumanski 《International Soil and Water Conservation Research》 SCIE CSCD 2015年第1期1-14,共14页
The terrestrial landscape has changed considerably compared to that of the early 20th century when soil conservation was first institutionalized.Large portions of the land are already intensively managed,and the remai... The terrestrial landscape has changed considerably compared to that of the early 20th century when soil conservation was first institutionalized.Large portions of the land are already intensively managed,and the remainder is increasingly receiving human interventions.Previous work on soil conservation focused attention on technological innovations,particularly control and mitigation of soil erosion.However,land degradation has continued and actually accelerated in many parts of the world,due mainly to demands for continued economic development,using technologies that are highly exploitive.In many cases,this has been facilitated by highly inadequate and unsympathetic institutional,legislative,and policy environments.The paper discusses some of the new driving forces,new international programs,and new potential partners in soil conservation.Increasingly,international efforts to mitigate land degradation are shifting from studies of the biophysical processes to improving the global,national and local enabling policy environment,as well as mainstreaming of soil conservation into national and regional policies and programs.Also,increased emphasis is placed on economic instruments and international markets,such as carbon trading,and incorporation of non-market values in ecosystem investment,such as payment for ecosystem services,certification schemes,etc.The paper discusses some of the opportunities for soil conservation that accrue from these new driving forces. 展开更多
关键词 Land degradation environmental goods and services Driving forces
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部