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耕地及耕地后备资源的生态安全问题是当下的热点问题,对于耕地及耕地后备资源生态风险的研究势在必行。本研究首次从小尺度出发,以内蒙古巴林右旗的耕地及耕地后备资源图斑为研究对象,假拟耕地后备资源为耕地,以宜耕资源图斑为微观尺度的生态系统,应用AHP层次分析模型从土地暴露度、立地条件与土壤属性及斑块景观格局三个方面选取评价指标,建立巴林右旗耕地及耕地后备资源生态安全评价指标体系,并通过熵权法对模糊综合评价模型的获取权重过程进行改进,借助地统计学、土壤学和景观生态学的理论方法,对内蒙古巴林右旗耕地及耕地后备资源的生态安全进行评价分析。研究结果表明,耕地图斑面积为91995.49 hm2,耕地后备资源图斑面积为275960.00 hm2,总面积共367978.21 hm2。其中,耕地中有26.59%属于高度风险状态;耕地后备资源中55.09%属于高度风险,二者面积总和占评价总面积的47.97%。巴林右旗土地荒漠化严重,耕地及耕地后备资源生态风险总体处于严重水平,有待于针对性治理。
The ecological security of cultivated land and arable land reserve resources is a hot issue nowadays. It is imperative to study the ecological risk of arable land and cultivated land reserve resources. This study, for the first time starting from a small scale, took the cultivated land and cultivated land reserve plots in Balin Right Banner of Inner Mongolia as the research object, and hypothetically cultivated land reserve resources were cultivated land. The AHP AHP model The evaluation index was selected from three aspects of land exposure, site conditions and soil properties and patch landscape pattern. The ecological security evaluation index system of cultivated land and cultivated land reserve resources was established. The weight of the fuzzy comprehensive evaluation model The process of improvement, with the help of the methods of geostatistics, pedology and landscape ecology, to evaluate and analyze the ecological security of cultivated land and cultivated land reserve resources in Balin Right Banner, Inner Mongolia. The results showed that the plot area of cultivated land was 91995.49 hm2, the reserve area of cultivated land was 275960.00 hm2, and the total area was 367978.21 hm2. Among them, 26.59% of the cultivated land belongs to the high risk state; 55.09% of the cultivated land reserve resources are highly risky, accounting for 47.97% of the total evaluated area. Due to the serious land desertification in Bahrain Right Banner, the ecological risks of cultivated land and cultivated land reserve resources are generally at a serious level and need to be treated in a targeted manner.