文档介绍：文章编号:1008-181X(2000)03-0223-04
西庄河流域土地利用方式对土壤肥力影响的研究
高富1,沙丽清2,许建初1
(1:中国科学院昆明植物研究所,云南昆明 650204;2:中国科学院昆明生态研究所,云南昆明 650223)
摘要: 采用野外调查、取样和实验分析相结合的方法对云南省保山市西庄河山地流域内4种主要土地利用方式(林地、耕地、茶园、灌丛)的土壤理化性质进行对比研究,讨论了不同土地利用方式对土壤肥力的影响,结果表明,不同的土地利用方式对土壤肥力具有比较明显的影响:土壤有机质和全氮质量分数变化从大到小依次为灌丛>林地>茶园>耕地;磷、钾元素表现为耕地>茶园>林地>灌丛;土壤阳离子交换量表现为耕地>茶园>灌丛>林地;盐基饱和度表现为耕地>灌丛>林地>茶园;农业耕作活动对表层土壤物理性质影响明显。
关键词:西庄河流域;土地利用方式;土壤肥力;土壤物理性质;土壤化学性质
中图分类号:S158; 文献标识码:A
Effects of Land Use Types on Soil Fertility in Xizhuang Watershed
GAO Fu1, SHA Li-qing2, XU Jian-chu1
( 1: Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;
2: Kunming Institute of Ecology, Chinese Academy of Sciences, Kunming 650223, China )
Abstract: Soil physical and chemical properties under the four main types of land use (forest land, farmland, tea garden and bush land) in the Xizhuang watershed, Baoshan, Yunnan province, has been studied through field soil sampling and laboratory analysis. Effects of different land use types on soil fertility have been discussed in this paper. The results show that the different land uses will have obvious effects on soil fertility. Both anic matter and total nitrogen content decline in a sequences from bush land, forest land and tea garden to farm land; phosphorus and potassium content decline in a sequences from farmland, tea garden and forest land to bush land; cation exch