Soil Water Storage of Three Forest Types in Different Succession Stage in Dinghushan

Abstract

Abstract: Based on soil moisture data measured by hydroprobe moisture (CPN503DR),the dynamics and characteristics of soil water storage of three forest types were analysed in different succession stage in Dinghushan.Soil water storage differed greatly for different forest types,but having similar changing tendencies,i.e,decreasing with the soil depth.The soil water storage in monsoon evergreen broad-leaved forest was much higher than that in coniferous and broad-leaved mixed forest,and the storage in mixed forest was higher than that in coniferous forest.With the forests' succession,the soil water storage capability increased,and distributed randomly in the upper layers,where the root density was more intense.This indicated that the forest ecosystems had their own adaptable mechanisms to the environment.The maximum coefficients between forest soil layers were found in monsoon evergreen forest,and the minimum values in coniferous forest.The seasonal dynamics of soil water storage in Dinghushan can be divided into three stages:soil water consumption stage (from Jan. to Mar.),compensating stage (from Apr. to Sept.) and stable stage (from Oct. to Nov.).

Key words: Dinghushan, forest types, soil water storage, distribution characteristics

YIN Guang-Cai, ZHOU Guo-Yi, TANG Xu-Li, ZHANG Qian-Mei. Soil Water Storage of Three Forest Types in Different Succession Stage in Dinghushan[J]. journal6, 2003, 24(3): 62-68.

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