水土保持通报2012，Vol.32Issue(2)：29-34,6.
重庆市四面山典型林分土壤饱和导水率研究
Saturated Hydraulic Conductivity in Soils Under Typical Forests in Simian Mountains of Chongqing City
摘要
Abstract
On the soil profiles under typical planted and natural secondary forests in Simian Mountains of Chongqing City,soil saturated hydraulic conductivity（Ks） was measured by the constant-hydraulic head method,and the correlations between Ks and soil physical features and organic matter contents were established using multivariate regression and path analysis.The results show that,the values of Ks decreased negatively exponentially with increasing soil depths.Comparing to the control,Ks was significantly improved in all the forests,with effects in a descending order as： natural secondary Conifer×Broadleaf forest land natural secondary Broadleaf forest,Phyllostachys pubescens forest,Conifer forest landBroadleaf plantation,Conifer×Broadleaf plantation,Conifer plantation land wasteland.Soil clay content,bulk density,non-capillary porosity and 0.25 mm aggregate content were the key factors affecting Ks.The Forests encouraged effectively the accumulation of organic matters in the soils.The relationship between Ks and organic matter was well described with quadratic equations.Mixed mode of Conifer×Broadleaf with multiple layers is recommended in forest plantation and management.关键词
四面山/典型林分/土壤饱和导水率（Ks）/物理因子/土壤有机质Key words
Simian Mountains/typical forest/soil saturated hydraulic conductivity(Ks)/physical factors/soil organic matter分类
农业科技引用本文复制引用
王贤,张洪江,程金花,张焜,孙龙,马西军..重庆市四面山典型林分土壤饱和导水率研究[J].水土保持通报,2012,32(2):29-34,6.基金项目
国家“十二五”科技支撑计划“三峡库区典型区段长防林建设及质量调控技术” （）
国家自然科学基金项目 （）
国家公益性行业科研专项 （）
中央高校基本科研业务费专项 （）
