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首页> 外文会议>International conference on teaching and computational science;WTCS 2009 >Evaluation of Cultivated Land Productivity of Wanyuan County, Sichuan Province Using GIS
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Evaluation of Cultivated Land Productivity of Wanyuan County, Sichuan Province Using GIS

机译：基于GIS的四川省万源县耕地生产力评价。

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摘要

The objectives of the current study are to determine the factors impacting cultivated land productivity and to illustrate the spatial distribution pattern of cultivated land productivity using GIS. Landform information (slope and topographical position), soil physical and chemical properties (effective soil depth, organic matter, parent materials, texture, pH, total nitrogen, available phosphorus, available potassium, and drainage capacity), and cropping system were selected to assess the cultivated land productivity using Delphi technique. The weight of each index was determined by AHP approach. The results showed that about 60.21% of the study area was classified as third level followed by 28.5% of the total area as forth level, located in northwestern and southern Wanyuan, respectively. The highly productivity cultivated land is mainly distributed in valley with slope of less than 15° in Wanyuan county.
机译：本研究的目的是确定影响耕地生产力的因素，并使用GIS阐明耕地生产力的空间分布模式。选择地形信息（坡度和地形位置），土壤理化特性（有效土壤深度，有机质，母体材料，质地，pH，总氮，有效磷，有效钾和排水能力）和种植系统来进行评估德尔菲技术的耕地生产力。每个指标的权重通过AHP方法确定。结果表明，研究区的约60.21％被归为第三级，其次是总面积的28.5％被归为第四级，分别位于西北部和南部的万源。高产耕地主要分布在万源县坡度小于15°的谷地。

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