重庆南川岩溶山区土壤抗蚀性变化及预测模型研究  

Research on Changes of Soil Anti-erodibility and Prediction Model in Karst Mountain Areas in Chongqing Nanchuan

作　　者：王春晓[1] 谢世友[1] 王灿[1] 

机构地区：[1]西南大学地理科学学院,重庆400715

出　　处：《农业现代化研究》2009年第6期756-760,共5页Research of Agricultural Modernization

基　　金：国家"十一五"科技支撑计划课题<重庆地区喀斯特山地退化生态系统恢复与重建技术开发>(编号:2006BAC01A16);重庆市自然科学基金重点项目(编号:CSTC2009BA0002);重庆市重点实验室开放基金<三峡库区森林生态保护与恢复>(编号:CSTC2007CA1001)

摘　　要：土壤物理性质是评价土壤抗蚀性能的重要标准,本文对岩溶山区三种不同土地利用方式土壤主要物理性质及其各指标之间相互关系进行分析,确定了土壤物理性质优劣程度和变化趋向;用相关分析,回归分析和主成分分析得出了有机质含量对土壤抗蚀性能表现为显著的正相关性,确定了土壤抗蚀性最佳5指标,通过抗蚀性综合指数建立了该研究区土壤抗蚀性预测模型。The physical property of soil is a vital criterion to evaluate soil anti-erodibility. The principal physical properties and the correlations among different indexes under three different land use were analyzed, and defined the hierarchy and variable tendency of soil physical property. By correlation analysis, regression analysis and principal component analysis of the statistics collected, the results showed that the content of organic matter obviously appears positive correlation to the soil anti-erodibility, defined the best 5 indexes of soil anti-erodibility, and establishes the prediction model in research area through comprehensive index of soil anti-erodibility.

关 键 词：岩溶山区 土壤抗蚀性 物理性质 预测模型 

分 类 号：S151.9[农业科学—土壤学]