Ecosystem services are substantial elements for human society. The central challenge to meet the human needs from ecosystems while sustain the Earth's life support systems makes it urgent to enhance efficient natu...Ecosystem services are substantial elements for human society. The central challenge to meet the human needs from ecosystems while sustain the Earth's life support systems makes it urgent to enhance efficient natural resource management for sustainable ecological and socioeconomic development. Trade-off analysis of ecosystem services can help to identify optimal decision points to balance the costs and benefits of the diverse human uses of ecosystems. In this sense, the aim of this paper is to provide key insights into ecosystem services trade-off analysis at different scales from a land use perspective, by comprehensively reviewing the trade-offs analysis tools and approaches that addressed in ecology, economics and other fields. The review will significantly contribute to future research on trade-off analysis to avoid inferior management options and offer a win-win solution based on comprehensive and efficient planning for interacting multiple ecosystem services.展开更多
Land fragmentation is widely known to have an impact on farm performance. However, previous studies investigating this impact mainly focused on a single crop, and only limited data from China are available. This study...Land fragmentation is widely known to have an impact on farm performance. However, previous studies investigating this impact mainly focused on a single crop, and only limited data from China are available. This study considers multiple crops to identify the impact of land fragmentation(LF), as well as cropping system(CS), on farm productivity and the efficiency of grain producers in the North China Plain(NCP), using Cangxian County of Hebei Province as an example. Detailed household-and plot-level survey data are applied and four stochastic frontier and inefficiency models are developed. These models include different sets of key variables in either the production function or the inefficiency models, in order to investigate all possibilities of their influences on farm productivity and efficiency. The results show that LF plays a significant and detrimental role, affecting both productivity and efficiency. A positive effect is evident with respect to the CS variable, i.e., multiple cropping index(MCI), and the wheat-maize double CS, rather than the maize single CS, is usually associated with higher farm productivity and efficiency. In addition to LF and CS, four basic production input variables(labor, seed, pesticide and irrigation), also significantly affect farmers’ productivity, while the age of the household head and the ratio of the off-farm labor to total labor are significantly relevant to technical inefficiency. Policies geared toward the promotion of land transfer and the rational adjustment of cropping systems are recommended for boosting farm productivity and efficiency, and thus maintaining the food supply while mitigating the overexploitation of groundwater in the NCP.展开更多
以1990—2016年间CNKI数据库收录的1 083篇土地流转中文核心期刊为样本数据,借助Cite Space IV可视化信息分析工具,辅之以文献计量学的研究方法,以一种多元、分时、动态的引文分析可视化语言,全景式展现我国土地流转研究的知识图谱,不...以1990—2016年间CNKI数据库收录的1 083篇土地流转中文核心期刊为样本数据,借助Cite Space IV可视化信息分析工具,辅之以文献计量学的研究方法,以一种多元、分时、动态的引文分析可视化语言,全景式展现我国土地流转研究的知识图谱,不难发现:科研力量分散,院校间缺乏合作,是制约土地流转研究进一步深化的瓶颈;"土地流转"本土化的研究语境,土地承包经营权的权益属性以及理论研究与实践的协同性是土地流转研究的薄弱环节;土地流转、农地流转、规模经营、土地承包经营权、现代农业是土地流转研究的热点主题;新型城镇化是土地流转研究的前沿趋势。展开更多
基金China National Natural Science Funds for Distinguished Young Scholar,No.71225005The Key Project in the National Science&Technology Pillar Program of China,No.2013BACO3B00
文摘Ecosystem services are substantial elements for human society. The central challenge to meet the human needs from ecosystems while sustain the Earth's life support systems makes it urgent to enhance efficient natural resource management for sustainable ecological and socioeconomic development. Trade-off analysis of ecosystem services can help to identify optimal decision points to balance the costs and benefits of the diverse human uses of ecosystems. In this sense, the aim of this paper is to provide key insights into ecosystem services trade-off analysis at different scales from a land use perspective, by comprehensively reviewing the trade-offs analysis tools and approaches that addressed in ecology, economics and other fields. The review will significantly contribute to future research on trade-off analysis to avoid inferior management options and offer a win-win solution based on comprehensive and efficient planning for interacting multiple ecosystem services.
基金余潇枫教授主持的国家社科基金重大攻关项目<中非传统安全威胁识别评估及应对>(12&ZD099)第四子课题<中国边疆"双源性"非传统安全威胁识别+2 种基金评估及应对>兰州大学中央高校基本科研业务费创新团队项目<中国文化戍边战略研究>(13LZUJBWTD006Supported by the Fundamental Research Funds for the Cen-tral Universities)的系列成果
基金The National Key Research and Development Program of China (2016YFC0502103)The National Natural Science Foundation of China (41701092)。
文摘Land fragmentation is widely known to have an impact on farm performance. However, previous studies investigating this impact mainly focused on a single crop, and only limited data from China are available. This study considers multiple crops to identify the impact of land fragmentation(LF), as well as cropping system(CS), on farm productivity and the efficiency of grain producers in the North China Plain(NCP), using Cangxian County of Hebei Province as an example. Detailed household-and plot-level survey data are applied and four stochastic frontier and inefficiency models are developed. These models include different sets of key variables in either the production function or the inefficiency models, in order to investigate all possibilities of their influences on farm productivity and efficiency. The results show that LF plays a significant and detrimental role, affecting both productivity and efficiency. A positive effect is evident with respect to the CS variable, i.e., multiple cropping index(MCI), and the wheat-maize double CS, rather than the maize single CS, is usually associated with higher farm productivity and efficiency. In addition to LF and CS, four basic production input variables(labor, seed, pesticide and irrigation), also significantly affect farmers’ productivity, while the age of the household head and the ratio of the off-farm labor to total labor are significantly relevant to technical inefficiency. Policies geared toward the promotion of land transfer and the rational adjustment of cropping systems are recommended for boosting farm productivity and efficiency, and thus maintaining the food supply while mitigating the overexploitation of groundwater in the NCP.
文摘以1990—2016年间CNKI数据库收录的1 083篇土地流转中文核心期刊为样本数据,借助Cite Space IV可视化信息分析工具,辅之以文献计量学的研究方法,以一种多元、分时、动态的引文分析可视化语言,全景式展现我国土地流转研究的知识图谱,不难发现:科研力量分散,院校间缺乏合作,是制约土地流转研究进一步深化的瓶颈;"土地流转"本土化的研究语境,土地承包经营权的权益属性以及理论研究与实践的协同性是土地流转研究的薄弱环节;土地流转、农地流转、规模经营、土地承包经营权、现代农业是土地流转研究的热点主题;新型城镇化是土地流转研究的前沿趋势。
