“白色农业”与“三色农业”兴起及中国农业产业化方向

本文从白色农业与三色农业概念入手,阐述了白色农业的创新意义,提出了我国农业产业化的战略构想。     

我国可持续发展十大目标：关于“十五”计划制定的建议

“十五”计划是我国２１ 世纪的重大发展计划,直接关系着国民经济的发展方向,而实施可持续发展战略是我国“十五”计划和２０１５ 年远景规划的重要内容之一。为改善人民生活质量,改变“高资本投入、高资源消耗、高污染排放”发展模式,建立适合中国国情的“资源节约型”和“环境友好型”国民经济体系,充分利用“两种资源”和“两个市场”,本文提出了我国可持续发展的十大目标     

三峡库区山地可持续农业发展的问题与对策

三峡库区山地农业的发展与三峡工程的命运休戚相关。本文在详细分析库区山地可持续农业发展的主要制约因素的基础上,提出了库区山地可持续农业发展的主要途径     

中国基本农田保护的回顾与展望

本文指出我国基本农田保护的必然性,并就基本农田保护内涵展开探讨。通过回顾建国以来我国农田保护工作进展,分析了当前基本农田保护中的问题,提出了今后我国基本农田保护的工作方向     

中国脆弱生态区可持续发展指标体系框架设计

本文分析了我国脆弱生态区人口—资源—环境与发展的矛盾,探讨了我国典型脆弱生态区可持续发展指标体系建立的指导原则和方法,提出了我国典型脆弱生态区可持续发展指标体系     

实施《全国生态环境建设规划》的基本思路

良好的生态环境是可持续发展的重要前提条件,为了实施好《全国生态环境建设规划》,本文从组织层面、管理层面、法规层面,提出了实施的基本措施     

Integrated Aquaculture in Subsaharan Africa

An incremental, farmer participatory approach to the development of sustainable aquaculture in integrated farming systems has been tested in Malawi. Average fish production rose from 900 to approximately 1500 kg ha^-1 as farms achieved increasing levels of integration. Integrated farms produce almost six times the cash generated by the typical Malawian smallholder. The integrated pond-vegetable garden generates almost three times the annual net income from the staple maize crop and the homestead combined. The ecological footprint of integrated aquaculture is approximately 4 m² per kg of fish produced compared to 170 m² for more intensive systems. The incremental approach offers the possibility of fostering substantial improvement in rural livelihoods among African smallholding farmers.     

长江洪涝灾害的可持续发展综合防御对策体系

洪涝灾害严重制约了长江流域可持续发展, 本文分析了洪涝灾害的主要成因, 从合理协调人口——资源环境——社会经济三者之间深层次关系出发, 建立了长江洪涝灾害的可持续发展综合防御对策体系     

An evaluation of public participation information for land use decisions: public comment,surveys, and participatory mapping

ABSTRACT

Public participation in the form of public meetings and written submissions has been criticised as a democratic ritual that fails to give citizens a real voice in government decisions. Participatory mapping and community surveys are alternative public participation (PP) methods that can augment legally required processes for land use planning. To date, there has been little evaluation research comparing the information content generated by required PP processes and alternative PP sources with respect to local land use decisions. Using multiple development projects from a case study community, we analysed and compared information generated from three different sources of public participation: (1) formal public comment (written submissions), (2) responses to community survey questions, and (3) land use preferences generated from participatory mapping. We found public comment strongly supported development while results from survey questions and participatory mapping methods revealed community ambivalence. The differences in public opinion are attributed to two key factors: the representativeness of participants in the PP process and the specific methods used for measuring public opinion. Community surveys and participatory mapping generated more accurate and representative community information compared to the formal PP process which was characterised by lower participation and vulnerability to special interest manipulation. For local government decision makers, the political risk of broadening PP information appears high relative to the risk of inaccurately assessing public opinion thus limiting adoption of alternative PP methods such as participatory mapping.     

A convective wind resource model for Solar Vortex power generation

ABSTRACT

Climate change has increased the need for clean, nonpolluting energy sources to decrease dependence on fossil fuels. Alternative energy sources, mainly solar and horizontal wind, have been the primary focus for producing clean energy. New technologies are being developed, such as the Solar Vortex (SoV), which was developed at the Georgia Institute of Technology, and relies on a vertical wind resource to generate power. The National Renewable Energy Lab (NREL) has resource models representing solar and horizontal wind resources across the 48 United States. This research developed a vertical wind resource model that is comparable in resolution to NREL’s solar and horizontal wind resource models and uses the model for estimating power output for the SoV. This model complements NREL’s existing resource models and supports the deployment of an additional clean energy generation technology. The model was applied to Mesa, Arizona to find feasible sites for a small-scale vertical wind farm.