基于GIS的金沙江流域耕地地力评价——以云南省绥江县为例

发布时间：2018-05-21 15:08

本文选题：GIS + 耕地地力　；参考：《中国农业资源与区划》2016年01期

【摘要】：为掌握金沙江流域耕地地力基本情况,科学指导农业生产,以云南省绥江县为例进行耕地地力评价研究。文章采用GIS技术,利用土地利用现状图、土壤图及行政区划图叠置划分法确定评价单元,选取土壤管理、立地条件、剖面与耕层理化性状等16个评价因子,采用模糊数学理论确定指标隶属度,借助层次分析法对评价单元的指标隶属度进行加权求和计算耕地地力综合指数,运用累积曲线法将绥江县耕地划分为6个等级,其中,1级耕地630.69hm~2、2级耕地477.14hm~2、3级耕地2 092.64hm2、4级耕地1 594.71hm~2、5级耕地3 231.31hm~2、6级耕地2 315.04hm~2,分别占总面积1.034 153万hm2的6.10%、4.61%、20.24%、15.42%、31.25%、22.38%;同时,将绥江县中低产田地划分为3种类型,其中,旱耕地坡地梯改型5 974.55hm2、旱耕地瘠薄培肥型1 296.94hm~2、稻田渍涝潜育型387hm~2,分别占总面积的57.77%、12.54%、3.74%。并针对影响耕地质量的障碍因子提出改良利用建议。
[Abstract]:In order to master the basic situation of cultivated land fertility in Jinsha River Basin and guide agricultural production scientifically, the evaluation of cultivated land fertility in Suijiang County, Yunnan Province was studied. In this paper, GIS technique is used to determine the evaluation unit by land use status map, soil map and administrative division map, and 16 evaluation factors, such as soil management, site conditions, physical and chemical properties of section and tiller, are selected. The fuzzy mathematics theory is used to determine the index membership degree, the weighted summation of the index membership degree of the evaluation unit is used to calculate the comprehensive index of cultivated land fertility, and the accumulated curve method is used to divide the Suijiang county cultivated land into 6 grades. Among them, 630.69hmm2 / 2hm-2 / 2 of the total area of 10341.53 hm2 accounted for 6.107.14hmmmmmmm2hm2m-2 / 2 / 2 cultivated land 2 092.64hm2m-2 / 4 grade 1 594.71hmm2hm2hmm2hm2 / 5 cultivated land 2 315.04hm2hm2, respectively, which accounted for 6.101.61g / 4.61g / 10341.53 hm2 of 10341.53 hm2 respectively, which accounted for 6.101.61ng 20.24hmng 15.42n 31.2522.3838383.The middle and low yield fields in Suijiang County were divided into three types. The slope land ladder was changed to 5 974.55 hm2, the barren cultivated land was 1 296.94 hmm2, and the paddy field waterlogging latent type was 387 hmm2, accounting for 57.77% of the total area and 12.54% of the total area, respectively. Suggestions for improvement and utilization of the obstacle factors affecting the quality of cultivated land were put forward.
【作者单位】：云南省绥江县土壤肥料工作站;云南省绥江县农业技术推广中心;
【基金】：国家农业部测土配方施肥补贴项目“绥江县耕地地力评价”
【分类号】：S151.9;F323.211

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