基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征

doi:10.13287/j.1001-9332.201609.025

应用生态学报 ›› 2016, Vol. 27 ›› Issue (9): 2754-2760.doi: 10.13287/j.1001-9332.201609.025

基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征

甘艺贤¹, 戴全厚^1*, 伏文兵^1,2, 严友进¹, 彭旭东¹

1贵州大学林学院, 贵阳 550025;
2贵州晟泰工程咨询有限公司, 贵阳 550002

收稿日期:2016-02-19 发布日期:2016-09-18
通讯作者: * E-mail: qhdairiver@163.com
作者简介:甘艺贤,女,1993年生,硕士研究生. 主要从事水土保持与生态环境建设研究. E-mail: 754565556@qq.com
基金资助:
国家重点研发计划项目(2016YFC0502604)、国家自然科学基金项目(41461057)、贵州省科技厅应用基础重大专项(2014-200207)和贵州大学人才引进基金项目(2015-63)资助

Characteristics of soil erosion on Karst slopes under artificial rainfall experiment conditions.

GAN Yi-xian¹, DAI Quan-hou^1*, FU Wen-bing^1,2, YAN You-jin¹, PENG Xu-dong¹

1College of Forestry, Guizhou University, Guiyang 550025, China;
2Guizhou Shengtai Engineering Consulting Co. Ltd., Guiyang 550002, China

Received:2016-02-19 Published:2016-09-18
Contact: * E-mail: qhdairiver@163.com
Supported by:
The woke was supported by the National Key Research and Development plan (2016YFC0502604), the National Natural Science Foundation of China (41461057), the Major Application Special Program of Guizhou Province (2014-200207) and the Guizhou University Talent Introduction Foundation (2015-63)

摘要/Abstract

摘要： 探索喀斯特坡耕地土壤侵蚀过程及机理对该区水土流失及石漠化治理具有重要的现实和指导意义.本文采用人工模拟降雨的试验方法,探索喀斯特坡耕地土壤侵蚀过程及特征.结果表明: 降雨强度较小时(30、50 mm·h^-1),水土流失以地下孔(裂)隙流失为主,当降雨强度较大时(80 mm·h^-1),土壤侵蚀以地表流失为主;地表径流模数和输沙率均随坡度的增加而增大,随孔(裂)隙度的增加而减小.地下径流模数在0.37～0.52 L·m^-2·min^-1,地下输沙率在0.81～1.93 g·min^-1,二者均随坡度的增加而减小,随降雨强度的增加呈先增大后减小的变化趋势.

Abstract: Studying soil erosion process and mechanism on Karst slopes has important practical and guiding significance for controlling soil and water loss and preventing rocky desertification in Karst region. The soil erosion process and characteristics on Karst slopes were explored by artificial simulation rainfall experiment. Results showed that the soil and water loss largely came from underground hole (crack) when rainfall intensity was in the range of 30 and 50 mm·h^-1, while soil erosion occurred primarily in soil surface when rainfall intensity was 80 mm·h^-1. Surface runoff modulus and transport rate both increased with increasing slope, and decreased with increasing underground hole (crack) degree. The underground runoff modulus varied from 0.37 to 0.52, and the underground transport rate changed from 0.81 to 1.93 g·min^-1. They both decreased with increasing slope while increased firstly and then decreased with increasing rainfall intensity.

甘艺贤, 戴全厚, 伏文兵, 严友进, 彭旭东. 基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征[J]. 应用生态学报, 2016, 27(9): 2754-2760.

GAN Yi-xian, DAI Quan-hou, FU Wen-bing, YAN You-jin, PENG Xu-dong. Characteristics of soil erosion on Karst slopes under artificial rainfall experiment conditions.[J]. Chinese Journal of Applied Ecology, 2016, 27(9): 2754-2760.

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基于模拟降雨试验的喀斯特坡耕地土壤侵蚀特征

Characteristics of soil erosion on Karst slopes under artificial rainfall experiment conditions.

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