生态与农村环境学报 ›› 2007, Vol. 23 ›› Issue (1): 12-15.doi: CNKI:SUN:NCST.0.2007-01-002

• 论文 • 上一篇    下一篇

岩溶山区不同土地利用方式下土壤质量指标响应

李阳兵, 邵景安, 魏朝富, 谢德体, 高明   

  1. 贵州师范大学地理与生物科学学院
  • 收稿日期:2006-08-08 出版日期:2007-01-25 发布日期:2011-05-09
  • 作者简介:李阳兵(1968-),男,重庆潼南人,博士后,教授,主要研究方向为土地资源与生态环境治理。
  • 基金资助:

    黔教科办[(2004)07];教育部“新世纪优秀人才支持计划”资助项目(NCET-05-0819)

Response of Soil Quality Indexes to Land Use of Different Patterns in Karst Mountains

LI  Yang-Bing, SHAO  Jing-An, WEI  Chao-Fu, XIE  De-Ti, GAO  Ming   

  1. College of Geography and Biology Science,Guizhou Normal University
  • Received:2006-08-08 Online:2007-01-25 Published:2011-05-09

摘要: 探讨了岩溶山区不同土地利用方式与土壤质量指标之间的响应关系。对重庆市北碚岩溶山区土壤肥力指标进行主因子分析的结果表明,原有22个土壤质量指标可归为4类,分别以有机质,有效含水量,通气孔隙度,细菌、真菌数量百分比为代表,这4类因子基本反映了土壤质量随土地利用变化的综合变化状况。通径分析表明,不同土地利用方式下土壤持水性能主要与有机质、>0.25 mm水稳性团聚体有关,二者的效应均大于黏粒。在土地利用方式变化过程中,土壤质量变化体现在有机质含量、土壤供持水能力、土壤结构状况和土壤微生物特性的变化上。

关键词: 土地利用, 土壤质量, 响应, 岩溶

Abstract: Responses of soil quality indexes to land use of different patterns were explored.Results show that by using the Main Factor Analysis Method the 22 soil quality indexes in the Beibei karst mountain region of Chongqing could be sorted into 4 categories represented,respectively,by organic matter,available soil water,aeration porosity,and percentage of bacteria. The 4 categories reflect basically comprehensive conditions of soil quality.Path analysis shows that soil water holding(capacity) under different patterns of land use is mainly correlated with organic matter,and >0.25 mm water stable aggregates,and their effects are higher than that of clay.When land use patterns changed,changes in soil quality were embodied in content of organic matter,soil water holding and supplying capacity,soil structure and soil microbial characteristics.

Key words: land use, soil quality, response, karst

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