基于熵权物元模型的福建山区耕地生态安全评价——以清流县为例

Ecological Security of Cultivated Land in Qingliu County Analyzed by Entropy Matter-Element Model

以福建省典型山区农业县-清流县为研究区,综合选取人均耕地等16个评价指标,采用熵权物元模型剖析了研究区域2010-2016年的耕地生态安全状况,并与多指标综合评价方法进行对比分析。结果表明:(1)清流县耕地生态安全级别在评价年份内均为"向较安全转化"级别,但在此级别内存在恶化趋势;(2)工业固体废物综合利用率对清流县耕地生态安全水平提升起到促进作用,而人口自然增长率等5个评价指标则限制了清流县耕地生态水平的提升;(3)与多指标综合评价方法相比,评价结果基本一致,个别年份出现差异,未影响整体趋势,熵权物元模型在分析单个指标影响方面更为直观、准确。

Taking Qingliu county,a typical mountainous agricultural region in Fujian,as an example,this study selected 16 indicators,such as per capita cultivated land,to analyze the ecological security of the area.From 2010 to2016,data were collected to fit in the entropy-based matter-element model for comparisons and evaluations.The results showed that（1）the security level of the area cultivated land belonged to the ＂ transition toward security＂ classification,but the trend could possibly reverse;（2）programs like the ＂ Comprehensive Utilization of Industrial Solid Wastes＂ enhanced the eco-security,but the population growth as well as 5 other factors could restrict the extent of potential improvement;and,（3）in general,the conclusion drawn by this study agreed with that obtained by the multi-index comprehensive evaluation with a few year-to-year discrepancies;however,the matter-element model was deemed more intuitive and accurate in analyzing the impact of individual indicators.