长江中下游粮食主产区耕地生态安全评价——基于省级面板数据

发布时间：2019-04-17 19:35

【摘要】：通过测算当前长江中下游粮食主产区耕地生态安全评价值,以评价该区域的耕地生态安全状况,构造PSR价评价模型。选取单位耕地面积农药施用量、单位耕地面积化肥施用量、森林覆盖率等20个评价指标,构建综合度测算方程与协调度测算方程,以求出最终研究区域的耕地生态安全评价值。结果表明,江苏省耕地生态安全综合评价位于流域5省之首,湖南与湖北2省位列其次也超过区域平均水平;江西与安徽2省的耕地生态安全压力较大,安徽与湖北2省的耕地生态安全状态相对堪忧,湖南、湖北及安徽3省的耕地生态安全响应系统相对薄弱,尚存改善空间。
[Abstract]:In order to evaluate the ecological security of cultivated land in the main grain-producing areas of the middle and lower reaches of the Yangtze River, the ecological security of cultivated land was evaluated, and the PSR price evaluation model was constructed. 20 evaluation indexes, such as pesticide application per unit arable land area, chemical fertilizer application per unit arable land area and forest coverage rate, were selected to construct the comprehensive degree calculation equation and the coordination degree calculation equation, in order to find out the evaluation value of cultivated land ecological security in the final study area. The results show that the comprehensive evaluation of cultivated land ecological security in Jiangsu Province is the first of the five provinces in the basin, and Hunan and Hubei provinces rank second in the second place, which is also higher than the regional average level. The ecological security of arable land in Jiangxi and Anhui provinces is under great pressure, while in Anhui and Hubei provinces, the ecological security status of arable land is relatively worrying, and the response system of cultivated land ecological security in Hunan, Hubei and Anhui provinces is relatively weak, and there is still room for improvement.
【作者单位】：东华理工大学测绘工程学院;流域生态与地理环境监测国家测绘地理信息局重点实验室;东华理工大学经济与管理学院;
【基金】：国家自然科学基金(编号:41201118) 教育部人文社会科学研究项目(编号:14YJC630077) 江西省高校人文社会科学研究项目(编号:GL1416) 江西省社会科学规划项目(编号14GL25) 测绘地理信息江西省研究生创新教育基地资助
【分类号】：F323.211

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