| 基于GIS的洪江市耕地地力评价研究 |
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| 引用本文： | 屈金莲,周清,彭育桐,张自荣,杨小辉.基于GIS的洪江市耕地地力评价研究[J].农业网络信息,2014(5):17-20. |
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| 作者姓名： | 屈金莲 周清 彭育桐 张自荣 杨小辉 |
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| 作者单位： | 土壤肥料资源高效利用国家工程实验室;湖南农业大学资源环境学院;湖南省洪江市农业局; |
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| 基金项目： | 国家科技支撑计划项目(编号:2012BAD14B17) |
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| 摘 要： | 依托于GIS技术,用土壤图、土地利用现状图和行政区划图叠加制作评价单元,采用特尔菲法从立地条件、理化性状、土壤管理、剖面性状4个方面选取10个因子构建评价指标体系,运用AHP和综合模糊数学方法对洪江市耕地地力进行评价。结果表明:洪江市耕地中,1至7级耕地面积占总面积比例分别为:13.7%、15.9%、13.9%、12.5%、17.9%、10.7%、15.4%,耕地地力等级的高低与土壤类型、基础设施条件密切相关,评价结果对土壤改良具有指导性意义。
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| 关 键 词： | 湘南区 耕地地力 GIS |
Evaluation of Farmland Productivity in Hongjiang City Using GIS |
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| Institution: | QU Jinlian, ZHOU Qing, PENG Yutong, ZHANG Zirong, YANG Xiaohui (1.National Engineering Laboratory for Effcient Utilization of Soil and Fertilizer, Shandong Agricultural University, Shandong Taian 410128;2. College of Resources and Environment, Hunan Agricultural University, Hunan Changsha 410128; 3.Hongjiang Agriculture Bureau of Hunan Province, Hunan Hongjiang 418200) |
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| Abstract: | Based on the geographic information system （GIS）, evaluation unit was the superposition of soil distribution map, land utilization map and administrative map. Ten affected factors from four aspects covering profile situation, land growing situation, soil physieochemical property and soil management, were selected to build up the evaluation model of farm land fertility by using Delphi method. Finally the grades of cultivated land fertility were evaluated by fuzzy discrimination method and AHP. The results of farmland productivity in HongJiang City could be divided into 7grades, and the areas of gradesl--7 accounted for 13.7%, 15.9% ,13.9% ,12.5% ,17.9% ,10.7% ,15.4% of the total amble land areas respectively. The land fertility level was in close relations to soil type and infrastructure conditions, which provided practical reference for improvement of middle-low soil. |
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| Keywords: | Southern Hunan District cultivated land fertility GIS |
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