北沟林场两种不同林分林下枯落物现存量及持水能力的研究  

Study on litter contents and water holding capacity of two stand forests on Beigou Forest Farm

作　　者：牟雪[1] 姜鹏[1] 王卫军[1] 任仙[1] 谷建才[1] 

机构地区：[1]河北农业大学,河北保定071000

出　　处：《河北林果研究》2014年第1期1-4,共4页Hebei Journal of Forestry and Orchard Research

基　　金："十二五"国家科技支撑计划"‘三北’地区水源涵养林体系构建技术研究与示范"(2011BAD38B05)

摘　　要：以承德地区北沟林场落叶松纯林和落叶松山杨混交林为研究对象,测定枯落物厚度和现存量,通过室内浸泡法测定持水量和持水率。结果表明:落叶松纯林林下枯落物现存量明显高于落叶松山杨混交林,分别为9.02t/hm2和6.55t/hm2;枯落物最大持水能力落叶松纯林略小于落叶松山杨混交林,分别为2.11t/hm2、2.41t/hm2。不同林分的林下枯落物持水量与浸水时间的动态变化规律基本相似,枯落物持水量与浸水时间呈正相关,达到最大持水量的时间也基本一致。Taking larch forest and larch-poplar-mixed forest in Beigou Forest Farm in Chengde area as the research object,this paper determined the thickness of litter and litter contents, and measured water holding capacity through indoor soaking method.The results showed that larch forest has more litter content than larch-poplar-mixed forest obviously,with 9.02t/hm2 and 6.55t/hm2,respectively.The maximum litter moisture capacity of larch is 2.11t/hm2 less than 2.41t/hm2 of larch-poplar-mixed forest forest.The dynamic changing law of water holding capacity and water soaking time of litter under different types of forests are similar basically.The water holding capacity is positively correlated to water soaking time of litter and simultaneouly,their time,when attaining the maximum capacity of water moisture is the same basically.

关 键 词：枯落物 林分 持水量 现存量 

分 类 号：S715[农业科学—林学]