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林业科学 ›› 2013, Vol. 49 ›› Issue (8): 148-153.doi: 10.11707/j.1001-7488.20130821

• 研究简报 • 上一篇    下一篇

基于案例推理的 SoLIM 方法在土壤养分制图中的应用

徐丽华, 谢德体, 魏朝富, 李兵   

  1. 西南大学资源与环境学院 重庆 400716
  • 收稿日期:2012-07-05 修回日期:2013-07-01 出版日期:2013-08-25 发布日期:2013-08-17
  • 通讯作者: 谢德体
  • 基金资助:

    "十二五"国家科技支撑计划子课题(2012BAD15B04-3); 国家水体污染控制与治理科技重大专项课题(2012ZX07104-003); 西南大学博士基金(SWU112065)。

Application of SoLIM Based on Case Reasoning in Soil Nutrient Mapping

Xu Lihua, Xie Deti, Wei Chaofu, Li Bing   

  1. College of Resources and Environment, Southwest University Chongqing 400716
  • Received:2012-07-05 Revised:2013-07-01 Online:2013-08-25 Published:2013-08-17

关键词: 土壤养分制图, 全氮, 案例推理, 土壤-景观推理模型

Abstract:

The 111 soil samples were collected in Wangjiagou watershed of Three Gorges Reservoir Area with complex geographical environment. Total nitrogen content in the soil was measured, and the land use data and elevation, slope, plan curvature, profile curvature, topographic position index and topographic wetness index were collected. The soil total nitrogen was mapped by using the soil land inference model (SoLIM) that is based on case reasoning. The results showed that, land use type data can be used to improve the accuracy of prediction. The spatial distribution of soil nutrients produced by the SoLIM contained more information, and presented more details of spatial variability of soil nutrients. Therefore, the SoLIM based on case reasoning was validated a good method for soil nutrient mapping in the small study area with complex geographical environment.

Key words: soil nutrient mapping, total nitrogen, case reasoning, soil land inference model(SoLIM)

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