[1]严冬春,文安邦,史忠林,等.紫色土坡面水流跌坑形态特征及其成因[J].山地学报,2012,(01):30.
　YAN Dongchun,WEN Anbang,SHI Zhonglin,et al.Configuration Characteristic and Cause of Drop-Pit Development on Purple Slopeland[J].Mountain Research,2012,(01):30.
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紫色土坡面水流跌坑形态特征及其成因()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2012年01期
页码:
30
栏目:
山地学报
出版日期:
2012-01-01

文章信息/Info

Title:
Configuration Characteristic and Cause of Drop-Pit Development on Purple Slopeland
作者:
严冬春;文安邦;史忠林;贺秀斌;
1.中国科学院水利部成都山地灾害与环境研究所 山地表生过程与生态调控重点实验室，四川 成都 610041；
2.中国科学院研究生院，北京 100049
Author(s):
YAN Dongchun;  WEN Anbang;  SHI Zhonglin;  HE Xiubin
1. Key Laboratory of Mountain Environment Evolvement and Regulation, Institute of Mountain Hazards and Environment, CAS, Chengdu 610041, China;
2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
关键词:
跌坑; 土壤侵蚀; 坡面流; 紫色土
Keywords:
drop pit;  soil erosion;  overland flow;  purple soil
分类号:
S157.1
文献标志码:
A
摘要:
跌坑的形成是坡面侵蚀过程中的重要一环,是细沟开始出现的临界形态,跌坑的贯穿标志着细沟的形成。本研究采用模拟降雨与微地形测量相结合的方法,调查了不同雨强下紫色土坡面跌坑的发育过程及其形态分布。试验结果表明,降雨初期紫色土坡面水流跌坑边界模糊,横断面上跌坑基本在相同水平线上,与紫色土颗粒组成较粗有关;1.83～2.33 mm/min的雨强下,顺坡跌坑平均间距变化于8.2～9.4 mm之间,跌坑深度顺坡分布呈现较大的波动性,平均深度介于1.4～1.8 cm,总体上随雨强呈增大趋势;横断面上跌坑宽度变化相对较大,平均宽度介于9.4～16.3 cm,随雨强变化趋势不明显;跌坑水平间距除边界外相对稳定,地...
Abstract:
The investigation on the configuration characteristic of droppit is the precondition of rill development mechanism research. This study adopted the methods of artificial rainfall and microlandform measure to investigate the configuration characteristic of droppit development on purple soil slopeland. The results displayed that: Firstly, the droppit on the sameness horizontal line on transect when the droppit were initiated in rainfall. And then, the droppit was incised deepen at some point than others, results in overland flow was concentrated at this point. The configuration of micromorphology evolved when the depth of droppit deepen. Although, the droppit distributed anywhere, the distance between droppit along the slope was similar in different rainfall intensity. The depth of droppit were displayed fluctuated along the slope, and had the similar trend with rainfall intensity, reflected the dynamic characteristic of overland flow. On transect, the distance between droppit was random, and the point of droppit occurred was stochastic too. So it implies that the forming of droppit was coupling caused by overland flow and difference erodibility of purple soil.

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备注/Memo

备注/Memo:
收稿日期(Received date)：2011-10-10；改回日期(Accepted) : 2012-01-03。 资助项目（Support item）：国家科技支撑计划项目课题（No.2011BAD31B03），中国科学院西部行动计划项目（No.KZCX2-XB3-09）。［Science and Technology Support Project in China(No. 2011BAD31B03)，CAS Western Project(No. KZCX2-XB3-09)．］
作者简介（Biography）：严冬春（1981－），男，湖北宜昌人，博士，主要从事山地侵蚀与水土保持研究。［Yan Dongchun，male，come from Yichang and was born in 1981，Ph.D，mostly engage soil erosion and soil and water conservation research．］E-mail：yandc@imde.ac.cn，Tel：028-85214188 *
通讯作者（Author for Correspondence) ：文安邦（1964－），男，重庆忠县人，研究员，博士生导师，主要从事水土保持与荒漠化防治。［Wen Anbang，male，come from Chongqing and was born in 1964，professor，mostly engage soil erosion and soil and water conservation research．］E-mail：wabang@imde.ac.cn，Tel：028-85214188
更新日期/Last Update: 1900-01-01