干旱半干旱地区华北落叶松人工林不同密度的土壤水文研究——以塞罕坝机械林场为例  

Study on soil hydrology of Larix principis.rupprechtii Mayr plantations of different densities in arid and semi-arid areas——A case study of Saihanba Machine Forest Farm

作　　者：邵仁旭[1] 翟洪波[2] 谷建才[1] 姚凯 李良[4] 呼和牧仁[4] 

机构地区：[1]河北农业大学林学院,河北保定071001 [2]国家林业局调查规划设计院,北京100714 [3]河北省塞罕坝机械林场,河北承德068466 [4]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

出　　处：《河北农业大学学报》2010年第5期80-83,共4页Journal of Hebei Agricultural University

基　　金：国家林业局重点科研项目"半干旱地区华北落叶松人工林可持续经营技术应用开发与试验示范"(2008-02)

摘　　要：试验通过标准地调查、土壤物理性质、持水能力测定及入渗实验,对塞罕坝机械林场3种不同密度华北落叶松林分土壤水文效应做了初步研究,结果表明:裸地各层土壤容重最大,为134.25 g/cm3;最大蓄水量及有效蓄水量在林分密度为3 990株/hm2(样地3)最高,其它样地分别为122.05,670.59 t/hm2;样地3非毛管孔隙度是裸地非毛管孔隙度的2.4倍,利用幂函数对土壤入渗速率与入渗时间进行拟合,结果显示相关系数都在0.90以上。Water is a major limiting factor for plant growth in the arid and semiarid areas,Soil hydrology research has important significance on forestry production and ecological protection in these areas.This paper studies soil hydrology effect of three different densities of Larix principis-rupprechtii forest in Saihanba machine forest farm by sample plots survey,soil physical properties and water-holding capacity determination.The results show that the largest of bare soil bulk density layers is 134.25 g/cm3.It is the highest in the stand density of 3 990 stock/hm2（Plot 3） whose maximum storage capacity and effective storage capacity are 122.05 t/hm2,670.59 t/hm2 respectively.Plot 3 is 2.4 times as large as the bare in non-capillary porosity.By using power function of soil infiltration rate and infiltration time for stimulation,the results showed that correlation coefficients are above 0.90.

关 键 词：干旱半干旱 华北落叶松人工林 土壤物理性质 

分 类 号：S152.7[农业科学—土壤学]