河南省耕地利用效益评价研究

耕地利用效益是衡量耕地生产能力和农业可持续发展的重要指标.以河南省为研究对象,从经济、社会和生态3个方面选取19项指标构建耕地利用效益评价指标体系.运用熵值法确定指标权重,采用多因素综合评价法,评价1990-2009年河南省耕地利用效益水平,最后利用协调度模型判断影响耕地利用效益的各个子系统之间的相互协调程度.结果表明:(1) 1990-2009年河南省耕地利用综合效益水平总体呈上升趋势；(2) 20 a间耕地利用系统协调度呈现出不稳定的波动状态,总体上由极不协调转变为基本协调状态.为实现河南省耕地资源的合理利用,应通过挖掘耕地利用潜力,加大土地整治和环境保护,推进农业结构调整,发展农业科技,加大惠农支农力度,控制人口数量等方面提高耕地利用效益.

Research on Evaluation of Cultivated Land Use Efficiency in He'nan Province

The benefit of cultivated land use is an important measure of land productivity and sustainable agriculture development.By taking He'nan Province as the study area,19indicators were selected to build an evaluation index system of cultivated land use efficiency from the three aspects of economy,society and ecology.Entropy method was used to determine indicator weight;comprehensive multi-factor evaluation method,to evaluate the standards of cultivated land use efficiency from 1990to 2009;and the coordination degree model,to judge the mutual coordination degree for various subsystems affecting the cultivated land use efficiency.Results show that overall,the cultivated land use efficiency in He'nan Province presented an upward trend from 1990to 2009.The coordination degree of cultivated land use system was in an unstably fluctuated status in the 20years,from very uncoordinated status to basic coordination on a whole.To achieve a reasonable use of cultivated land resources in He'nan Province,we should exploit cultivated land use potentials,enhance land remediation and environmental protection,promote agricultural restructuring,develop agricultural science and technology,increase efforts to the concessions and support for agriculture,and control population growth.