六盘山典型植被类型土壤水文生态功能研究

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中文摘要：通过对土壤的水文物理性质、持水能力及渗透性的测定,分析了宁夏六盘山南坡典型森林植被类型的持水性能和渗透能力.结果表明,六盘山典型植被的最大贮水能力486.5～604.8 mm,有效贮水能力61.0～292.1 mm,砾石体积含量的大小是影响土壤有效贮水能力的关键因素.典型植被土壤表层(0～10 cm)的初始入渗速率4.00～24.99 mm·min -1,稳定渗透速率1.18～15.17mm ·min-1.利用Kostiakov方程、Horton方程和Philip方程模拟了土壤渗透过程,表明Horton方程是较好的模拟形式,土壤非毛管孔隙度对土壤水分渗透起到关键作用,而砾石含量是通过影响土壤非毛管孔隙度而影响土壤水分渗透作用.

外文标题：Soil Hydrological Properties of Typical Vegetation in Liupan Mountains

外文摘要：Based on soil hydro-physical properties, water holding capacity and infiltration, the water holding capacity and infiltration of typical vegetations were analyzed on the south slope of Liupan Mountains in Ningxia Hui Autonomous Region. The results indicated that the maximum water storage capacity ranged from 486.5 mm to 604. 8 mm and the effective storage capacity ranged from 61. 0 mm to 292.1mm. The effective storage capacity of 0~100 cm soil layer was affected by the volumetric content of rock fragments. The initial infiltration rate of soil surface (0~10 cm) ranged from 4.00 mm·min-1 to 24.99 mm·min-1 and the steady infiltration rate ranged from 1. 18 mm· min-1 to 15.17 mm·min-1 . Simulations of the soil water infiltration using the Kostiakov equation, Horton equation and Philip equation showed the result using the Horton equation was the best. It also showed that the soil non-capillary porosity played a key role on the soil water infiltration and the volumetric content of rock fragments might affect the soil water infiltration through affecting the content of soil non-capillary porosity.

外文关键词：

soil hydrological propertieswater retaining capacityinfiltrationrock fragmentsLiupan Mountains

作者：

徐丽宏、王彦辉、熊伟、于澎涛

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作者单位：

中国林业科学研究院森林生态环境与保护研究所,国家林业局森林生态环境重点实验室,北京 100091

关键词：

土壤水文物理持水能力渗透性砾石六盘山

基金：

国家自然科学基金国家自然科学基金林业公益性行业科研专项林业公益性行业科研专项中央级公益性科研院所基本科研业务费专项国家林业局森林生态环境重点实验室项目资助

项目编号：

4080101740730631200904056200904005CAFYBB2010001-02

出版年：

2012

林业科学研究

中国林业科学研究院

林业科学研究

CSTPCDCSCD北大核心

影响因子：0.996

ISSN：1001-1498

年,卷(期)：2012.25(4)

被引量11
参考文献量12