耕地质量等别更新评价研究——以长沙县为例

Stduy on the Evaluation of the Cultivated Land Quality Grade Update——A Case Study of Changsha County

本文以长沙县2013年土地变更调查数据为基础,对长沙县近三年内增加的耕地和因耕地质量建设引起质量变化的耕地,进行耕地质量等别年度更新评价;通过外业补充调查,补充新增耕地分等因素数据及更新变化较大区域的分等因素数据;采用多因素综合评价法计算长沙县2013年耕地质量等别,并对2010-2013年间耕地的数量、质量变化趋势性进行分析研究。

On the basis of Changsha County land change survey data in 2013, the paper make annual update evaluation of the cultivated land quality grade, include the increased arable land in nearly three years, and cultivated land quality that changed by quality construction. By field supplement survey, add new farmland grading factors data and update the grading factors of changes in a large area; Changsha County is obtained by using the multi-factor comprehensive evaluation method of cultivated land quality in 2013, and 2010-2013, the cultivated land quantity and quality change trend analysis.