浙江安吉主要植被类型土壤抗蚀性研究  

Soil Anti-erodibility of the Main Forest Types in Anji County

作　　者：陈三雄[1] 谢莉[2] 张金池[3] 姜姜[3] 张晓勉[3] 

机构地区：[1]中水珠江规划勘测设计有限公司,广州510610 [2]水利部珠江水利委员会,广州510611 [3]南京林业大学,南京210037

出　　处：《水土保持研究》2007年第4期348-351,共4页Research of Soil and Water Conservation

基　　金：上海市科委重点项目“黄浦江水源涵养林造林模式的建立与研究”的一部分,项目编号;2002-8.

摘　　要：经因子分析,10个用于表征土壤抗蚀性的指标,可以简化为水稳性团粒因子、无机黏粒类因子两个相互独立的公因子。根据土壤抗蚀能力可以将8个样地分为3类。落阔林、灌木林、毛竹林为第一类,土壤抗蚀能力强。茶园、草地、常阔林、松林划为第二类,抗蚀性较强。而裸露地抗蚀性差,单独作为第三类。≤1 mm细根能有效提高土壤抗蚀性能。在表征根系的参数中,根体积更能映根系提高土壤抗蚀性能的效应。Soil anti-erodibility of the main forest types in Anji County,Zhejiang Province is studied. It shows that all the 10 antierodibility indexes can be divided into 2 common factors that are inorganic clay factor and water-stable aggregate factor by means of Factor Analysis. All the 8 plots can be clustered into 3 kinds based on the soil anti-erodibility. Anti-erodibility of Deciduous broad-leaved forest,shrub community and Moso bamboo are the strongest, so these 3 plots are clustered into the first kind. The second kind with medium anti-erodibility is composed of tea garden, pinetum, evergreen broad-leaved forest and grass land, whereas the third kind with poor anti-erodibility is made up of only the bared-land. Roots less than 1 mm in diameter are the most effective in improving soil anti-erodibility. Among all the root indexes, root volume can reflect the effect on improving anti-erodibility very well.

关 键 词：土壤抗蚀性 因子分析 主要植被类型 浙江安吉 

分 类 号：S157.1[农业科学—土壤学] S714.2[农业科学—农业基础科学]