ISWC OpenIR  > 水保所知识产出(1956-2013)
茵陈蒿群落垂直结构对坡面产流产沙过程的影响
李盼盼1; 王兵1,2; 刘国彬1,2; 李文达1
2017
Source Publication水土保持学报
Volume31Issue:2Pages:40-44
Abstract

为探究茵陈蒿群落不同垂直结构对产流、产沙过程的影响,利用人工模拟降雨试验的方法,研究了不同
垂直结构的茵陈蒿群落坡面侵蚀过程。结果表明:在植被盖度相同条件下,茵陈蒿多层群落结构(茵陈蒿+
狗尾草+生物结皮)和双层群落结构(茵陈蒿+生物结皮)的减流、减沙效果显著优于单层群落结构,二者的
减流效益分别为40.5%和22.6%,减沙效益分别为86.6%和73.5%。不同垂直结构的茵陈蒿群落累积产沙
量均可表示为累积产流量的幂函数(R2>0.98),表现为累积产沙量随累积产流量的增加而增加,且随群落
结构层数的增加,3种垂直结构群落的累积产沙量增幅减小。植物根系可以改善土壤结构,增加降水入渗,
减少地表径流,是影响产流、产沙过程的关键因素。因此,群落垂直层次多、组分复杂、整体预防水土流失
的能力也相应较强。对易于形成植被空层的草地群落,应当重视其低层植被建设,加强草地群落垂直结构
及其水土保持功能的相关研究,以期为黄土高原草地植被恢复和结构配置优化提供理论依据

Other Abstract

By simulated rainfall experiments,we identified the effects of different vertical structures on runoff
and sediment production processes in the community of Artemisia capillaries.The results showed that the
reduction effects of runoff and sediment yield of the multi-layer vertical structure(Artemisia capillaries +
Setaria viridis (L.)Beauv+biological crusts)and double-layer vertical structure(Artemisia capillaries +
biological crusts)were significantly greater than those of the single-layer vertical structure(Artemisia
capillaries)under the same condition of vegetation coverage.Compared with the single-layer vertical structure,
the other two structures could reduce soil erosion significantly.In addition,runoff was reduced by 22.6%and
40.5% over the double-layer vertical structure and multi-layer vertical structure,respectively,and
sediment yield was reduced by 73.5% and 86.6%,respectively.The cumulative sediment yield could be
expressed as a power function of the cumulative production flow (R2>0.98),showing that the cumulative
sediment yield increased with the augment of the runoff production,and the degree of the enhancement
decreased when the community structure became more complex.The results also showed that plant roots
could improve soil structure by increasing rainfall infiltration and reducing overland runoff,which was the
key factor influencing the runoff and sediment yield processes.All results indicated that the ability of
community to prevent soil erosion could be improved with complicated vertical structure and components.In
conclusion,in order to provide the theory basis for grassland vegetation restoration and structural configurationoptimization for the Loess Plateau,we have to study further the vertical structure of grassland community and
reveal the mechanisms of soil and water conservation.

Keyword茵陈蒿 群落垂直结构 产流产沙 草地生态系统 水土保持
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8483
Collection水保所知识产出(1956-2013)
Affiliation1.西北农林科技大学林学院
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
Recommended Citation
GB/T 7714
李盼盼,王兵,刘国彬,等. 茵陈蒿群落垂直结构对坡面产流产沙过程的影响[J]. 水土保持学报,2017,31(2):40-44.
APA 李盼盼,王兵,刘国彬,&李文达.(2017).茵陈蒿群落垂直结构对坡面产流产沙过程的影响.水土保持学报,31(2),40-44.
MLA 李盼盼,et al."茵陈蒿群落垂直结构对坡面产流产沙过程的影响".水土保持学报 31.2(2017):40-44.
Files in This Item:
File Name/Size DocType Version Access License
茵陈蒿群落垂直结构对坡面产流产沙过程的影(250KB)期刊论文作者接受稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[李盼盼]'s Articles
[王兵]'s Articles
[刘国彬]'s Articles
Baidu academic
Similar articles in Baidu academic
[李盼盼]'s Articles
[王兵]'s Articles
[刘国彬]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[李盼盼]'s Articles
[王兵]'s Articles
[刘国彬]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.