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当前位置: 首页 > 文章 > 宁夏六盘山北侧5种典型植被的土壤持水性能研究 林业科学研究 2006,19 (3) 301-306
Position: Home > Articles > Study on Soil Capacities of Water-retention on Typical Vegetations in the North Side of Liupan Mountains in Ningxia Forest Research 2006,19 (3) 301-306

宁夏六盘山北侧5种典型植被的土壤持水性能研究

作  者：
窦建德;王绪芳;熊伟;王彦辉;于澎涛;郭浩
单  位：
宁夏回族自治区固原市原州区林业局;宁夏回族自治区固原市六盘山国营林业局;中国林业科学研究院森林生态环境与保护研究所
关键词：
宁夏六盘山;土壤水分特征曲线;土壤持水性;土壤物理特性
摘  要：
通过对土壤水分特征曲线和物理性质的测定,分析了宁夏六盘山北侧5种典型植被类型土壤的持水性能和供水性能。结果表明:用Gardner等在1970年提出的幂函数方程可以较好地反映土壤含水量与土壤水吸力之间的数量关系;不同植被类型土壤各层的土壤密度的大小排序为弃耕地>山桃人工林>天然长芒草>华北落叶松人工林>天然沙棘林,总孔隙度恰恰相反;在土壤水的中吸力阶段(0.1~1.5 MPa),华北落叶松人工林地、天然长芒草地、天然沙棘林地、山桃人工林地和弃耕地土壤各层的含水量分别为169.7~239.3、160.3~236.1、140.9~224.5、119.9~198.1、113.5~176.4 g.kg-1,说明各种植被类型土壤的持水性能依次减弱;不同植被类型土壤的供水性能随着土壤吸力的增加而呈递减趋势,说明通过植树种草可改善土壤结构、降低土壤密度和增加土壤总孔隙度等物理性质而对其持水性能和供水性能产生积极作用。
译  名：
Study on Soil Capacities of Water-retention on Typical Vegetations in the North Side of Liupan Mountains in Ningxia
作  者：
DOU Jian-de~1,WANG Xu-fang~2,XIONG Wei~(3*),WANG Yanhui~3,YU Peng-tao~3,GUO Hao~3(1.The Forestry Administrstion of Yuanzhou District,Guyuan 756000, Ningxia,China;2.Liupanshan Forestry Bureau of Guyuan City in Ningxia Autonomous Region,Jingyuan 756401,Ningxia,China;3.Research Institute of Forest Ecology,Environment and Protection,CAF,Beijing 100091,China)
关键词：
Liupan Mountains of Ningxia;soil water characteristic curve;soil water retention;soil physical characters
摘  要：
The capacity of water-retention and-supply for plants of the soils on five typical vegetations were analyzed by measuring the soil water characteristic curves and physical properties in the north side of Liupan Mountains,Ningxia.The results showed that the relationship between soil moisture and soil suction could be successfully expressed by the power function proposed by Gardner et al.(1970).The soil density in different layers on five vegetations were ranged from high to low values as follow: abandoned land,Prunus davidiana plantation,Stipa bungcana community,Larix principi-rupprechtii plantation and Hippophae rhamnoides community.However,the order of total soil capillary porosity of the five vegetations was just contrary.From 0.1 to 1.5 MPa in soil suction,soil water content of Larix principi-rupprechtii plantation,Stipa bungcana community,Hippophae rhamnoides community, Prunus davidiana plantation and abandoned land were ranged in 169.7～239.3 g·kg~(-1),160.3～236.1 g·kg~(-1),140.9～224.5 g·kg~(-1),119.9～198.1 g·kg~(-1)and 113.5～176.4 g·kg~(-1) respectively,it meant that the soil capacity of water-retention of the five vegetations decreased in order.The order of soil capacity of water-supply for the five vegetation types was the same as soil capacity of water-retention,and it decreased with increasing of soil suction.The results could be explained by the positive effect of soil physical properties(i.e.soil density and total capillary porosity et al.) caused by planting trees and grass on the soil capacities of water-retention and-supply.

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