Arid
DOI10.1371/journal.pone.0087713
Plant Interactions with Changes in Coverage of Biological Soil Crusts and Water Regime in Mu Us Sandland, China
Gao, Shuqin1; Pan, Xu1,3; Cui, Qingguo1; Hu, Yukun1,3; Ye, Xuehua1; Dong, Ming1,2
通讯作者Ye, Xuehua
来源期刊PLOS ONE
ISSN1932-6203
出版年2014
卷号9期号:1
英文摘要

Plant interactions greatly affect plant community structure. Dryland ecosystems are characterized by low amounts of unpredictable precipitation as well as by often having biological soil crusts (BSCs) on the soil surface. In dryland plant communities, plants interact mostly as they compete for water resources, and the direction and intensity of plant interaction varies as a function of the temporal fluctuation in water availability. Since BSCs influence water redistribution to some extent, a greenhouse experiment was conducted to test the hypothesis that the intensity and direction of plant interactions in a dryland plant community can be modified by BSCs. In the experiment, 14 combinations of four plant species (Artemisia ordosica, Artemisia sphaerocephala, Chloris virgata and Setaria viridis) were subjected to three levels of coverage of BSCs and three levels of water supply. The results show that: 1) BSCs affected plant interaction intensity for the four plant species: a 100% coverage of BSCs significantly reduced the intensity of competition between neighboring plants, while it was highest with a 50% coverage of BSCs in combination with the target species of A. sphaerocephala and C. virgata; 2) effects of the coverage of BSCs on plant interactions were modified by water regime when the target species were C. virgata and S. viridis; 3) plant interactions were species-specific. In conclusion, the percent coverage of BSCs affected plant interactions, and the effects were species-specific and could be modified by water regimes. Further studies should focus on effects of the coverage of BSCs on plant-soil hydrological processes.


类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000330621900157
WOS关键词POSITIVE INTERACTIONS ; DRYLAND ECOSYSTEMS ; COMMUNITIES ; COMPETITION ; FACILITATION ; ESTABLISHMENT ; GERMINATION ; SUCCESSION ; DIVERSITY ; DESERT
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
来源机构中国科学院植物研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184318
作者单位1.Chinese Acad Sci, State Key Lab Vegetat & Environm Change, Inst Bot, Beijing, Peoples R China;
2.Hangzhou Normal Univ, Key Lab Hangzhou City Ecosyst Protect & Restorat, Hangzhou, Zhejiang, Peoples R China;
3.Univ Chinese Acad Sci, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Gao, Shuqin,Pan, Xu,Cui, Qingguo,et al. Plant Interactions with Changes in Coverage of Biological Soil Crusts and Water Regime in Mu Us Sandland, China[J]. 中国科学院植物研究所,2014,9(1).
APA Gao, Shuqin,Pan, Xu,Cui, Qingguo,Hu, Yukun,Ye, Xuehua,&Dong, Ming.(2014).Plant Interactions with Changes in Coverage of Biological Soil Crusts and Water Regime in Mu Us Sandland, China.PLOS ONE,9(1).
MLA Gao, Shuqin,et al."Plant Interactions with Changes in Coverage of Biological Soil Crusts and Water Regime in Mu Us Sandland, China".PLOS ONE 9.1(2014).
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