摘要
耕地资源是人类赖以生存和发展的物质基础,面对我国人多地少,耕地资源匮乏的国情,保护和合理利用有限的耕地资源,提高耕地集约利用水平,是确保我国粮食安全及可持续发展的关键。以黑龙江省肇源县为研究区,从投入强度、利用程度、利用效益三个方面选取18个指标构建县级耕地集约利用评价指标体系,运用熵权法和综合指数模型评价2006—2011年肇源县耕地集约利用程度,并构建障碍度模型对影响县级城市耕地集约利用的障碍因子进行诊断。结果显示:肇源县耕地集约利用水平呈上升趋势,2006—2011年耕地利用集约度从0.202 3上升到0.867 0。耕地投入强度障碍度以年均36.23%的速度增加,而利用效益和利用程度障碍度分别以年均54.63%和23.46%的速度下降,由此得出,耕地利用投入强度是影响肇源县耕地集约利用的最大障碍因素。
Cultivated land resources are the material basis which humen depend on.Due to facing with the conditions that huge population with less land and cultivated land resources are scarce in China,protection and rational use of limited cultivated land resources,improving the level of intensive land use are critical to ensure China′s food security and sustainable development.Zhaoyuan county of Heilongjiang province was selected as the study area and a theoretical model was established to assess intensive land use.The evaluation index system was built with the three indices including the aspects of input intensity,degree of utilization,and use efficiency.And 18 indicators were used in this system.Entropy method and the comprehensive index model were used to evaluated the level of intensive land use from 2006 to 2011,and obstacle degree model was built to diagnose its obstacle indicators affecting intensive land use.Results showed that the level of intensive land use in Zhaoyuan was generally upward,with the intensive land use index increasing from 0.202 3 to 0.867 0 from 2006 to 2011.The obstacle degree of input intensity respectively increased by an annual average of 36.23%,but the obstacle degree of utilization efficiency and utilization extent decreased by an annual average of 54.63% and 23.46%,respectively.The input intensity was found to be the biggest factor affecting intensive land use.
出处
《水土保持研究》
CSCD
北大核心
2013年第1期148-151,155,共5页
Research of Soil and Water Conservation
关键词
耕地集约利用
评价
障碍度
肇源县
intensive cultivated land use
evaluation
obstacle degree
Zhaoyuan County
