文献类型：期刊文献

中文题名：不同降雨条件下天然次生林水文过程动态分析

英文题名：Dynamic analysis of hydrological processes of natural secondary forest in different rainfall conditions

作者：王小明[1] 周本智[1] 钟绍柱[2] 孔维健[1] 王刚[1] 徐升华[3]

第一作者：王小明

机构：[1]中国林业科学研究院亚热带林业研究所;[2]浙江省富阳市水利局;[3]浙江省富阳市林业局

年份：2010

期号：6

起止页码：57-60

中文期刊名：南京林业大学学报：自然科学版

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金："十一五"国家科技支撑计划项目(2006BAD03A1806);中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2008006;RISF060701)

语种：中文

中文关键词：天然次生林;集水区;森林水文过程

外文关键词：natural secondary forest; watershed; forest hydrologic process

分类号：S718

摘要：以中亚热带天然次生常绿阔叶林（以下简称天然次生林）生态系统为对象,研究了不同降雨强度下森林生态系统的水文过程。结果表明：（1）降雨前期土壤水分条件对天然次生林集水区径流影响显著。在前期土壤水分干燥至中等湿润的条件下,天然次生林集水区径流最大值滞后于降雨峰值5~7 h;在前期土壤水分湿润的条件下,天然次生林集水区径流最大值滞后于降雨峰值缩减为1h。（2）不同层次土壤含水量差异显著。5 cm土层含水量最低,其次为20 cm和50 cm两个层次的含水量,10 cm土层含水量在各层次中最高。（3）不同降雨强度下,各层次土壤最大含水量出现的时间与降雨量最大值出现时间差异显著,在降雨前期土壤水分干燥至中等湿润的条件下,两者达到最大值的时间间隔为2~6 h;在前期土壤水分湿润的条件下,两者达到最大值的时间一致。
Hydrological processes of natural secondary forest ecosystem in Qianjiangyuan ecology station were studied in this paper.By observation,we got the following results：（1）The effect of early soil moisture condition on runoff was significant.The maximum runoff of natural secondary forest watershed lagged about 5—7 hours behind maximum precipitation intensity in early dry to medium moist conditions,whereas the lag time was reduced to one hour in moist condition.（2）Soil moisture differed significantly with different depth.Soil moisture in 5 cm soil layer was minimum,followed by that in 20 cm and 50 cm soil layers,and maximum in 10 cm soil layer.（3）The maximum soil moisture in different soil layers lagged different time with the appearance of maximum precipitation intensity in different rainfall intensities.The maximum soil moisture lagged about 2—6 hours behind maximum precipitation intensity in early dry to medium moist conditions,whereas the two side appeared at the same time in early moist conditions.