基于组合赋权法的哈尔滨市耕地生态安全评价

Analysis of Cultivated Land Ecological Security Assessment of Harbin City Based on Combination Weighting Method

根据耕地资源生态安全内涵和影响因素,从自然、经济、社会3个方面选取与耕地生态安全关系密切的17项指标,构建哈尔滨市耕地生态安全评价指标体系。运用组合赋权法计算各项指标的权重,通过定量计算,得出哈尔滨市各县域耕地生态安全综合值。采用非等间距法将耕地生态安全综合值分为安全、较安全、敏感、风险、恶化5个安全级别。结果表明,哈尔滨市各县域单元的耕地生态安全状况为:依兰县与通河县处于较安全级别,双城市与宾县处于风险级别,其它6县(市)为敏感级别。

Based on the connotation and factors influencing cultivated land ecological security,evaluation index system was constructed from three aspects including nature,economy,and society by selecting 17 indices which have close relation with land ecological security.The combination weighting method was used to determine the weights of the indicators,and though the quantitative calculation,the paper got the comprehensive value of each county′s cultivated land ecological security in Harbin City.The non-equidistant method was used to divide the comprehensive value into five parts such as safety,relative safety,sensitive,risk and deterioration.The results showed that the cultivated land ecological security was at the relative safety level in Yilan County and Tonghe County;and it was at risk level in Shuangcheng City and Bin County;and the cultivated land ecological security was at sensitive level in the other six county-scale regions.