[1]韩 珍,王小燕*,李馨欣.土石混合紫色土坡面水文过程的实验研究[J].山地学报,2017,(04):451-458.[doi:10.16089/j.cnki.1008-2786.000242]
　HAN Zhen,WANG Xiaoyan,LI Xinxin.Effects of Rock Fragment Cover on Hydrological Processes in Purple Soils[J].Mountain Research,2017,(04):451-458.[doi:10.16089/j.cnki.1008-2786.000242]
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土石混合紫色土坡面水文过程的实验研究()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2017年04期
页码:
451-458
栏目:
山地环境
出版日期:
2017-07-30

文章信息/Info

Title:
Effects of Rock Fragment Cover on Hydrological Processes in Purple Soils
文章编号:
1008-2786-(2017)4-451-08
作者:
韩 珍1; 王小燕1; 2*; 李馨欣1
1.西南大学 资源环境学院 三峡库区生态环境教育部重点实验室,重庆 北碚 400716;
2.中国科学院水利部水土保持研究所 黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西 杨陵 712100
Author(s):
HAN Zhen1;  WANG Xiaoyan1; 2; LI Xinxin1
1.College of Resources and Environment, Southwest University Key Laboratory of Eco-environments in Three Gorges Region(Ministry of Education), Beibei, Chongqing 400716, China;
2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
关键词:
碎石;  产流;  径流流速;  降水分配
Keywords:
rock fragment;  runoff;  flow velocity;  precipitation distribution
分类号:
S157.1
DOI:
10.16089/j.cnki.1008-2786.000242
文献标志码:
A
摘要:
土壤中的碎石改变了均质土壤的容重、孔隙度与孔径分布等物理性质,从而对土壤水文与侵蚀过程造成影响。该研究在室内人工模拟降雨条件下,对6种不同碎石体积含量(0,5%,10%,20%,30%,40%)紫色土坡面的水文过程进行了模拟。结果表明,径流系数与碎石含量之间差异显著(F=115,P<0.01)且呈显著正相关关系; 土壤湿润锋随着碎石含量的增大呈增加的趋势; 不同碎石含量的土壤坡面起始产流时间差异显著(F=208,P<0.01),且产流时间随碎石含量的增加而减小; 碎石含量为20%时,土壤平均产流量最高,超过20%时,产流量反而降低; 但碎石含量对径流流速没有显著影响。该研究结果可以为碎石含量在紫色土中的作用机理提供理论基础,同时为紫色土区土壤资源的合理利用提供科学依据。
Abstract:
Variable rock fragments in purple soil change some of the physical properties of homogeneous soil and therefore their influence is significant on the hydrological and erosional processes in purple soil regions.Considerable attention is being paid to quantitative information of the effects of rock fragment cover on soil infiltration, runoff and erosion.This research investigated six purple soil samples from a hillslope area with different rock fragment contents ranging from 0 to 5%,10%,20%,30%,and 40%.The results showed that the runoff coefficient and initial runoff rate were significantly influenced by the rock fragment content.As the rock fragment increased, the runoff coefficient(F=115, P<0.01)and wetting front increased while the surface runoff rate decreased significantly(F=208, P<0.01).The average runoff rate reached its highest value with a rock fragment content of 20% and declined when rock fragment content was more than 20%.Rock fragment content had no significant effect on runoff flow velocity.The results of this research can provide empirical a case study for further exploring the mechanism of rock fragment content in purple soils and its effect on hydrological processes.Findings can also be helpful for rational utilization of soil resources and improving soil erosion models in purple soil regions.

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备注/Memo

备注/Memo:
收稿日期(Received date):2016-6-2; 改回日期(Accepted date):2017-7-10
基金项目(Foundation item):国家自然科学基金青年项目(41401298); 中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金项目(K318009902-1418); 西南大学大学生科技创新“光炯”培育项目(20140105)[National Natural Science Foundation of China(41401298); The Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau under Project(K318009902-1418); The Science and Technology Innovation “GUANG Jiong” Project of Southwest University(20140105)]
作者简介(Biography):韩珍,(1994—),女,陕西铜川人,硕士研究生,主要从事土壤侵蚀及流域治理研究[Han Zhen(1994—), female, born in Shan xi, M.Sc.candidate, mainly engaged in soil erosion.]E-mail: m13658372800@163.com
*通讯作者(Corresponding author):王小燕(1983—),女,博士,讲师,主要从事土壤侵蚀及流域治理研究[Wang Xiaoyan(1983—), female, Ph.D., lecturer, mainly engaged in soil erosion research.]E-mail:wxy8388@gmail.com
更新日期/Last Update: 2017-07-30