重庆三峡库区现代农业模式选择

人类农业生产的历史经历了原始农业、传统农业（包括古代农业和近代农业）及现代农业的发展阶段。三峡库区生态环境脆弱,人口压力大,传统农业所占比重较大。加快三峡库区社会经济的发展,使库区尽快脱贫致富,现代农业建设是其农业发展的必然选择。文章基于高效生态农业的考虑,总结出适宜库区特色的现代农业“6＋4”模式——6种技术模式和4种经营模式。     

和田河流域土地资源可持续利用研究

和田河流域是干旱区沙漠中一条具有生态意义的河流,在短短半个世纪的时间里,生态环境发生了巨大的变化.由于气候状况和人类对和田河流域的开发程度加重,已引起上游山地冰川退缩、天然植被退化;中游绿洲耕地扩张迅速,土壤盐渍化,河渠人工渠化,水库增加显著;下游荒漠植被退化,水资源严重不足,土地沙化等生态环境问题,流域生态环境趋于脆...     

宁夏唐徕渠灌区可持续发展的探讨

分析了宁夏回族自治区唐徕渠灌区的管理现状和存在的主要问题,提出唐徕渠灌区可持续发展的建议：落实初始水权制度,合理配置水资源;尽快立项解决灌区工程存在的问题;建立科学的管理体制和合理的水价机制;发展节水灌溉,提高灌溉用水的利用效率和效益。     

Drivers and barriers to the adoption and diffusion of Sustainable Jet Fuel (SJF) in the U.S. Pacific Northwest

Sustainable Jet Fuel (SJF) represents an important component of the airline industry's strategy to simultaneously reduce GHG emissions while meeting a growing demand for international air travel. SJFs also have the potential to provide fuel supply diversification and security, enhance fuel price stability and provide regional/rural economic development benefits. This paper measures and ranks perceived drivers and barriers to an economically viable SJF industry in a unique U.S. region, the U.S. Pacific Northwest (PNW), through personal interviews with key aviation fuel supply chain stakeholders conducted from June to September 2015. In addition to providing a fertile arena for this first effort to systematically assess these drivers and barriers, the U.S. PNW is unique due to the region's long strategic focus on aviation innovation and its importance to the regional economy, the seminal efforts in the region to outline a path forward on SJF beginning in 2010, and the relatively small population spread over a large geographic area with a limited number of “hub” airport nodes which geographically concentrates aviation fuel demand and distribution. Nineteen stakeholder interviewees acknowledge that, in order for regional SJF adoption-diffusion to occur, airline jet fuel buyers must drive the process, particularly as they deal with greenhouse gas (GHG) emission issues and related policy considerations. Important perceived barriers to SJF industry scale-up in the U.S. PNW include the high production costs of SJF and related issues, such as fuel logistics and quality control in the transport, storage, and blending of SJFs. Perceptions around chain-of-custody issues, such as blending, tracking, and crediting of SJFs and future SJF market share projections for the year 2030 were also examined. Incorporating stakeholder input into discussions about adding blended SJF into the U.S. aviation fuel supply provides needed insight for the biofuels industry, policymakers, and researchers.     

An appraisal of the CORINE land cover database in airport catchment area analysis using a GIS approach

This paper presents a free available dataset, the CORINE land cover that helps dealing with the biases caused by pre-defined and heterogeneous census district boundaries in airport catchment area analysis in Europe. Using this dataset and a conventional GIS software it is possible to measure the size of the population within catchment areas at the same spatial level for all EU airports, allowing for consistent comparisons among airports. To illustrate the potential of the CORINE/GIS approach, the size of the population in the catchment areas of all European airports was determined. The empirical exercise has an aggregate perspective, but this database presents many other possibilities of analysis to perform in a case-by-case basis.     

Recreation and Tourism in Areas of Outstanding Natural Beauty: Key Influences on the Policymaking Process

This paper reports on a study completed in 2000 into the policymaking process for recreation and tourism in AONBs across England and Wales, with particular focus on the key influencing role of communication within this process. A number of practical measures, which might aid AONB communication and collaboration for policy development and implementation in the future, are derived from the research. In addition, the findings of the study lend weight to calls (current at the time of the research) for enhanced powers and funding for AONBs, particularly in respect of recreation and tourism provision.     

“以创补失论”在陕北民歌中的运用

“以创补失论”是著名翻译家许渊冲教授在其《唐诗英译百论》的序言中提出的翻译理论。本文结合其在陕北民歌中的具体运用，对如何“创”作出具体阐释。并以此论对南开大学王宏印教授等诸多老师的翻译，主要是在方言词语的处理问题上进行分析。希望能为陕北民歌的翻译提供借鉴。     

德国煤矿安全生产管理的经验及启示

近年来，虽然我国煤矿安全生产在稳步好转，但是，仍然面临严峻的形势，重特大事故仍时有发生。尤其是与发达国家德国相比，我国的煤矿安全生产管理还有待加强与改善。所以，本文试图提出合理地借鉴德国的煤矿安全生产管理经验，以推进和完善我国的煤矿安全生产。     

基于矿业监管博弈的激励约束机制研究

资源型城市地方政府在执行矿业监管权时，通常由于信息不对称及矿业政策执行力度范围限定与中央政府博弈。基于由此导致的矿业生产外部性，通过分析中央政府与地方政府各自的目标偏好和效益函数，利用经济博弈论和矩阵对策，试图寻求矿业监管存在问题的原因。文章尝试在利用行为经济学“前景理论”建模的基础上，借助贝叶斯理论分析，提出贝叶斯风险成本诱导机制，进而得出在该机制的激励约束下矿业监管倾向于帕累托有效。文章最后结合研究结论给出政策建议，为制定我国的能源资源开采政策提供了重要的理论参考。     

广西对越南的族源文化旅游开发

文章论述越南旅桂游客对于广西旅游业的意义，提出“旅游产品要素集聚点”概念，并探讨广西对越南的族源文化旅游开发的重点。