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当前位置: 首页 > 文章 > 林分密度对土壤水分理化性质的影响 东北林业大学学报 2013 (8) 61-64
Position: Home > Articles > Effects of Stand Density on Physical and Chemical Properties of Soil Moisture Journal of Northeast Forestry University 2013 (8) 61-64

林分密度对土壤水分理化性质的影响

作  者：
陈莉莉;王得祥;于飞;王兆杰
单  位：
西北农林科技大学
关键词：
松栎混交林;林分密度;土壤;含水率;理化性质
摘  要：
为探讨林分密度对林地土壤水分物理性质的影响,以火地塘林区不同林分密度范围(1 000～2 000、2 000～3 000、3 000～4 000株/hm2)的松栎混交林(中龄林)为研究对象,各设置2～3块标准地,对土壤进行分层采样,室内测定土壤的含水率、密度、孔隙度和有机质质量分数。结果表明:在不同林分密度松栎混交林中,土壤含水率表现为低密度林分>中密度林分>高密度林分;土壤密度是中密度林分较小,土壤较疏松,低密度和高密度林分土壤密度较大;总孔隙度和有机质质量分数的大小均表现为中密度林分>高密度林分>低密度林分。可见,在松栎混交林中,中密度林地土壤理化特性优于过密或过疏的林分,其土壤密度较低,土壤较疏松,孔隙度和有机质质量分数较都较大。因此,中密度林地有利于改良土壤的理化特性,提高土壤肥力。研究揭示:林分密度与土壤水分理化性质的关系密切。在火地塘林区松栎混交林的经营管理过程中,可以通过人为措施适当调整林分密度以改善林地土壤水分理化状况,提高土壤肥力水平,促进林木健康生长。
译  名：
Effects of Stand Density on Physical and Chemical Properties of Soil Moisture
作  者：
Chen Lili,Wang Dexiang,Yu Fei,Wang Zhaojie(Northwest A & F University,Yangling 712100,P.R.China)
关键词：
Oak-pine mixed forest;Stand density;Soil;Water content;Physical and chemical properties
摘  要：
An experiment was conducted to discuss the effects of stand density on physical and chemical properties of soil moisture.We took oak-pine mixed forest(middle-aged plantation) of different stand densities(1 000-2 000,2 000-3 000,3 000-4 000 plants/hm 2) at Huoditang forest region in Qinling Mountain and set 2-3 standard plots for stratified soil sample,the soil water content,density,porosity and the contents of organic matter.Under different densities of oak-pine mixed forest,the soil water content is in the order of low density stand>moderate density stand>high density stand under different densities of oak-pine mixed forest.The moderate density stand has lower bulk density than that of low density stand and high density stand.The soil for moderate density stand is softer.The order of total porosity and content of organic matter are moderate density stand>high density stand>low density stand.In the oak-pine mixed forest with moderate stand density,the soil bulk density is lower,while the soil porosity and content of organic matter are higher than those in over closing stand and sparse stand.Therefore,the oak-pine mixed forest with moderate stand density is benefit to improve the physical and chemical properties of soil and increase the soil fertility.The relationship between stand density and soil properties are very close.In the management process of oak-pine mixed forest for Huoditang forest region,the stand density can be adjusted for improving the physical and chemical properties of soil moisture,increasing soil fertility and promoting the healthy growth of trees.

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