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作 者 ：刘道平¹;陈三雄²;张金池¹;谢莉³;姜姜¹

期 刊 ：应用生态学报 2007年 18卷 03期 页码：493-498

关键词：土壤；

摘 要 ：对浙江安吉县龙王山地区主要植被类型的土壤渗透性进行了研究.结果表明,不同土地利用类型的土壤渗透性存在很大差别.根据土壤渗透能力可将8种植被类型分为4类：第1类,落叶阔叶林,土壤渗透能力极强；第2类,草地、松林、灌木林和茶园,土壤渗透能力强；第3类,毛竹林和常绿阔叶林,土壤渗透较强；第4类,裸露地,土壤较紧实,土壤结构较差,土壤通透性不佳,渗透能力弱.经主分量分析,得到表征渗透性能综合参数α和表征根系特征的综合参数β,构建了回归方程：α=0.1708e^β-0.3122.土壤理化性质、植被根系显著地影响土壤渗透性能.植被根系提高土壤入渗性能的实质是≤1 mm细根能有效地改善土壤性状.

Abstract:The study on the soil infiltration under different main vegetation types in Anji County of
Zhejiang Province showed that the characteristics of soil infiltration differed significantly with land
use type, and the test eight vegetation types could be classified into four groups, based on soil
infiltration capability. The first group, deciduous broadleaved forest, had the strongest soil infiltration
capability, and the second group with a stronger soil infiltration capability was composed of grass,
pine forest, shrub community and tea bush. Bamboo and evergreen broadleaved forest were classified
into the third group with a relatively strong soil infiltration capability, while bare land belonged to
the fourth group because of the bad soil structure and poorest soil infiltration capability. The com-
prehensive parameters of soil infiltration (α) and root (β) were obtained by principal component
analysis, and the regression model of α and β could be described as α=0.1708e^β-0.3122. Soil infiltration
capability was greatly affected by soil physical and chemical characteristics and root system. Fine roots
(≤1 mm in diameter) played effective roles on the improvement of soil physical and chemical properties,
and the increase of soil infiltration capability was closely related to the amount of the fine roots.

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