安徽农业科学2012，Vol.40Issue(20)：10455-10458,4.
滇西南不同林龄桉树林土壤理化性质的变化规律分析
Changing Rules of Physical and Chemical Properties of Eucalyptus Forest at Different Ages in Southwest of Yunnan Province
摘要
Abstract
[ Objective ] The aim was (o study on changing rules of physical and chemical properties of Eucalyptus forest at different ages in Southwest of Yunnan Province. [ Method ] In the research. field survey and indoor analysis were combined to study on physical and chemical properties of soils for the Eucalyptus at cutting ages in Lancang County. [ Result] For physical properties of soils, volume weight was increasing but soil structure became poor; water content in soils and capillary porosity were improving, but total soil porosity and non-capillary porosity were decreasing. For chemical properties, pH of soil dropped but soil acidity improved; organic matter, total N, hydrolyzablenitrogen, a-vailable phosphorus, and available potassium all declined; exchangeable calcium and magnesium were improving due to fertilization and Ca and Mg consumption. The results showed that the water absorption of soils and vegetation growth were improved with age increase of Eucalyptus forest, but ventilation and fertility declined accordingly. [ Conclusion] The research indicated that dry branches and fallen leaves should be preserved and nutrient cycling should be protected during introduction and management of Eucalyptus uraphylla spp. to make sure the nutrients in dry branches and leaves are back to soils, providing theoretical references for management of forest plantation and environment protection.关键词
尾叶桉类林/土壤理化性质/土壤肥力/澜沧县Key words
Eucalyptus uraphylla spp. / Physical and chemical properties/ Soil fertility/ Lancang County分类
农业科技引用本文复制引用
赵筱青,丁宁,闫平..滇西南不同林龄桉树林土壤理化性质的变化规律分析[J].安徽农业科学,2012,40(20):10455-10458,4.基金项目
国家自然科学基金项目(40961031) （40961031）
云南省应用基础研究面上项目(2009CD022) （2009CD022）
云南大学“中青年骨干教师培养经费”专项项目(XT412003). （XT412003）
