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当前位置: 首页 > 文章 > 不同密度油松人工林土壤特性及水源涵养功能研究 西北农林科技大学学报(自然科学版) 2013,41 (7) 141-149
Position: Home > Articles > Soil properties and water conservation function of Pinus tabulaeformis plantation with different stand densities Journal of Northwest A & F University(Natural Science Edition) 2013,41 (7) 141-149

不同密度油松人工林土壤特性及水源涵养功能研究

作  者：
陈莉莉;王得祥;张宋智;王兆杰;吕婧娴
单  位：
小陇山林业科学研究所;西北农林科技大学林学院
关键词：
油松人工林;林分密度;土壤有机质;土壤体积质量;孔隙度;持水量
摘  要：
【目的】探讨油松人工林不同林分密度下的土壤特性及水源涵养功能。【方法】以秦岭西段30年生油松人工林为研究对象,设置6种不同林分密度(1 367,1 861,2 517,2 617,3 012和3 683株/hm2)的标准地,采集土样和枯落物样品带回室内,测定土壤理化性质、土壤持水量、枯落物层持水特性等。【结果】林分密度对油松人工林的土壤含水率、有机质含量、体积质量、总孔隙度、土壤最大持水量、毛管持水量具有显著影响。密度为2 617株/hm2的林地土壤体积质量较小(1.14g/cm3),总孔隙度较大(62.57%),有机质含量较高,为1 367株/hm2林地的1.63倍,土壤持水性能较好(1 251.40t/hm2)。【结论】油松人工林在适宜密度条件下,有利于改善土壤结构,增强土壤肥力,提高土壤的蓄水能力,使林地具有更好的水源涵养功能。在秦岭西段小陇山林区,油松人工林的林分密度为2 617株/hm2左右较合理。
译  名：
Soil properties and water conservation function of Pinus tabulaeformis plantation with different stand densities
作  者：
CHEN Li-li1,WANG De-xiang1,ZHANG Song-zhi2, WANG Zhao-jie1,Lü Jing-xian1(1 College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China; 2 Xiaolongshan Research Institute of Forestry,Tianshui,Gansu 741022,China)
关键词：
Pinus tabulaeformis plantation;stand density;organic matter;bulk density;porosity;water-holding capacity
摘  要：
【Objective】 This paper was to discuss the soil properties and water conservation function of Pinus tabulaeformis plantation with different densities.【Method】 30 year-old P.tabulaeformis plantation with six different stand densities(1 367,1 861,2 517,2 617,3 012 and 3 683 plant/hm2) in western Qinling mountains were taken as the research object.The soil and litter samples were collected to measure soil physical and chemical properties,soil water-holding capacity,and litter water-holding characteristics.【Result】 Stand density had significant influence on the soil water content,organic matter content,bulk density,total porosity,soil maximal water-holding capacity and capillary water-holding capacity.P.tabulaeformis plantation with stand density of 2 617 plant/hm2 had low soil bulk density(1.14 g/cm3),large total porosity(62.57%),high organic matter content which was 1.63 times to that of plantation with density of 1 367 plant/hm2,and good soil water-holding capacity(1 251.40 t/hm2).【Conclusion】 P.tabulaeformis plantation with proper density was beneficial to improve soil structure,fertility and water-holding capacity and had better water conservation function.2 617 plant/hm2 was a reasonable stand density for P.tabulaeformis plantation in western Qinling mountains.

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