三峡库区耕地质量评价

发布时间：2018-06-28 01:20

本文选题：土地利用 + 耕地质量　；参考：《山地学报》2017年04期

【摘要】：本文基于GIS与RS技术,结合三峡库区区域特点,从自然质量、区位条件、生态安全和空间形态四个层面选取指标,构建三峡库区耕地质量综合评价指标体系,对库区耕地质量进行评价与分类,并利用统计数据对研究结果进行验证。结果表明,三峡库区耕地质量整体较好。其中,一类、二类耕地分别占库区耕地面积的22.31%与34.18%,主要分布在库尾各区县及库中的涪陵区;三类、四类耕地分别占27.96%与15.55%,主要分布在库中各区县;单位面积实际粮食产量较高的区县内,一类、二类耕地面积所占比例较高,而单位面积实际粮食产量较低的区县,三类、四类耕地所占比例较高。该研究结果可为三峡库区耕地保护与土地规划提供参考依据。
[Abstract]:Based on GIS and RS technology, combined with the regional characteristics of the three Gorges Reservoir area, this paper selects indicators from four aspects of natural quality, location condition, ecological security and spatial form, and constructs a comprehensive evaluation index system of cultivated land quality in the three Gorges Reservoir area. The quality of cultivated land in reservoir area is evaluated and classified, and the research results are verified by statistical data. The results show that the quality of cultivated land in the three Gorges Reservoir area is good as a whole. Among them, the second type of cultivated land accounts for 22.31% and 34.18% of the area of cultivated land in the reservoir area respectively, mainly distributed in each county in the end of the reservoir and in Fuling area of the reservoir, and the three types of cultivated land account for 27.96% and 15.55% of the cultivated land in the reservoir respectively, mainly distributed in the counties in the middle of the reservoir. In the counties with higher actual grain yield per unit area, the proportion of cultivated land of two types is higher, while the proportion of three and four types of cultivated land is higher in the counties with lower actual grain yield per unit area. The results can provide reference for farmland protection and land planning in the three Gorges Reservoir area.
【作者单位】：中国科学院水利部成都山地灾害与环境研究所山地表生过程与生态调控重点实验室;中国科学院大学;
【基金】：国家自然科学基金资助项目(41201273);国家自然科学基金资助项目(41571278) 中国科学院科技服务网络计划(STS计划)项目(KFJ-SW-STS-175-04)~~
【分类号】：F323.211

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