砾石覆盖对土壤水蚀过程影响的研究进展

被引：24

作者：

王小燕

李朝霞

徐勤学

蔡崇法

机构：

[1] 农业部亚热带农业资源与环境重点实验室华中农业大学水土保持研究中心

来源：

中国水土保持科学 | 2011年 / 9卷 / 01期

关键词：

砾石覆盖; 坡面侵蚀; 土壤侵蚀预报模型;

D O I：

10.16843/j.sswc.2011.01.021

中图分类号：

S157 [水土保持];

学科分类号：

0815 ; 082802 ; 090707 ; 0910 ;

摘要：

土壤中砾石的存在对水蚀过程有着重要的影响,有关砾石特别是表土砾石覆盖对土壤水蚀影响的研究结果表明,表土砾石对溅蚀分散、细沟间及细沟侵蚀等坡面侵蚀过程有重要影响:1)泥沙溅蚀分散量与砾石覆盖度呈负相关关系;2)砾石覆盖与细沟间侵蚀的关系较为复杂,这取决于表土的结构、砾石的位置和大小以及坡度等因素,当砾石嵌入结皮表土时,二者呈负相关关系,当砾石置于表土之上或嵌入具有结构孔隙的表土时,二者呈正相关关系;3)砾石覆盖对细沟间侵蚀产沙的作用效率与砾石粒径呈负相关关系,砾石置于表土之上的表土产沙量总低于砾石嵌入表土的产沙量;4)表土砾石覆盖能抑制细沟的形成,增加细沟糙度,降低细沟径流速率以及径流的侵蚀速率。鉴于砾石对水蚀过程的重要影响,RUSLE、WEPP和EUORSEM等土壤侵蚀模型预报含砾石土壤流失量时对相关参数做了修正。

引用

页码：115 / 120

页数：6

共 32 条

[11]

Effects of surface rock fragment characteristics on interrill runoff and erosion of a silty loam soil. De Figueiredo T,Poesen J. Soil and Tillage Research . 1998

[12]

The hydrological response of soil surfaces to rainfall as affected by cover and position of rock fragments in the top layer. J Poesen,F Ingelmo-Sanchez,H Mucher. Earth Surf Process Landf . 1990

[13]

Effects of size and incorporation of synthetic mulch on runoff and sediment yield from interrills in a laboratory study with simulated rainfall. Poesen JWA,Lavee H. Soil and Tillage Research . 1991

[14]

An improved splash transport model. Poesen J. Zeitschrift für Geomorphologie . 1985

[15]

Transport of rock fragments by rill flow:a fieldstudy. Poesen J. Catena Supplement . 1987

[16]

Effects of rock fragment covers on erosion and transport of non cohesive sediment by shallow overland flow. Bunte K,Poesen J. Water Resources . 1993

[17]

Classification and distribution of soils containing rock fragments in the United State. Miller F T,Guthfie R L. Soil ScienceSociety America Journal . 1984

[18]

USDA-Water Erosion Prediction Project:Hillslope Profile and Watershed Model Documentation. NSERL Report No.10 . 1995

[19]

Soil infiltration, runoff and sediment yield from a shallow soil with varied stone cover and intensity of rain. Uttam K M,Rao K V,Mishra P K,et al. European Journal of Soil Science . 2005

[20]

Rill hydraulics on a semiarid hillslope,southern Arizona. Abrahams A D, Gang L, Parsons A J. Earth Surface Processes and Landforms . 1996

← 1 2 3 4 →