ISWC OpenIR  > 水保所知识产出(1956---)
不同演替阶段群落根系分布与土壤团聚体特征的协同变化
由政1; 姚旭2; 景航2; 谷利茶3; 王国梁2,3
2016
Source Publication水土保持研究
Volume23Issue:6Pages:20-31
Abstract

采用空间代替时间的方法,选取黄土高原丘陵区退耕地演替前期(茵陈蒿)、中期(铁杆蒿)和后期(白羊草)典
型群落,研究了不同植物群落在不同演替阶段的根系特征、分布格局及其与土壤团聚体之间的关系。结果表明:群落
根系主要为<2mm的细根,且多向土壤表层集中,根长密度、表面积,根系生物量以及比根长表现出随着直径的增大
而减小规律。同时随着演替的进行,土壤团聚体稳定性有所增强,根长密度和根表面积也表现出增长趋势。对比群落
根系分布与土壤团聚体的相关关系可知,表层0.5~2mm的细根根长、表面积与根系生物量和土壤团聚体稳定性极
显著相关,说明了植物细根在群落演替以及土壤结构变化中具有重要作用。

Other Abstract

In order to understand the change of root distribution and the relationship with soil aggregate structure
in different plant communities of succession stage,the characteristics of roots and soil aggregates of
Artemisia capillaries,Artemisia gmelinii,Bothriochloa ischaemun community,which are typical species at
abandoned stage in loess hilly region were studied by using the method of substituting spatial difference for
time change.The results show that in the herbaceous community fine roots are the main part of whole roots
and most of roots distribute in the upper soil layer;the root length density(RLD),root surface area(RSA),
root biomass and specific root length(SRL)decreased with the increase of the size diameters(<0.5,0.5~
1.0,1.0~1.5,1.5~2,>2.0mm).The stability of soil aggregates,RLD and RSA increased with
succession durations.The stability of soil aggregates is significantly correlated with fine RLD,fine RSA and
fine root biomass in the upper soil layer,which indicates that fine roots play an important role in vegetation
succession and soil structure.

Keyword植被演替 根系特征 土壤团聚体
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/361005/8723
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学资源环境学院
2.西北农林科技大学水土保持研究所
3.中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
由政,姚旭,景航,等. 不同演替阶段群落根系分布与土壤团聚体特征的协同变化[J]. 水土保持研究,2016,23(6):20-31.
APA 由政,姚旭,景航,谷利茶,&王国梁.(2016).不同演替阶段群落根系分布与土壤团聚体特征的协同变化.水土保持研究,23(6),20-31.
MLA 由政,et al."不同演替阶段群落根系分布与土壤团聚体特征的协同变化".水土保持研究 23.6(2016):20-31.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[由政]'s Articles
[姚旭]'s Articles
[景航]'s Articles
Baidu academic
Similar articles in Baidu academic
[由政]'s Articles
[姚旭]'s Articles
[景航]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[由政]'s Articles
[姚旭]'s Articles
[景航]'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.