Size-related change in Nitraria sphaerocarpa patches shifts the shrub-annual interaction in an arid desert, northwestern China
文献类型：期刊论文
| 作者 | Zhang, Gefei1; Yang, Qiyue1; Wang, Xiaofen2; Zhao, Wenzhi1 |
| 刊名 | ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY
 |
| 出版日期 | 2015-11-01 |
| 卷号 | 69页码:121-128 |
| 关键词 | Arid desert Facilitation Interference Patch size Shrub effect |
| ISSN号 | 1146-609X |
| DOI | 10.1016/j.actao.2015.10.004 |
| 通讯作者 | Zhao, Wenzhi(zhaowzh@lzb.ac.cn) |
| 英文摘要 | In arid and semi-arid ecosystems, the effect of shrubs on their understory plants has been frequently reported. Many previous studies have shown that both facilitation and competition act simultaneously, and their balance changes in response to spatial or temporal variations in environmental stresses. Yet, we know little about how the interaction varies between shrubs and their understory plants in vegetation patches with different characteristics. Here, an empirical investigation was conducted in Hexi desert region of northwest China, to evaluate how the net effect of Nitraria sphaerocarpa shrubs on the herbaceous species varies across different sizes of N. sphaerocaipa patches. Our study showed that herbaceous species perform better on small shrub patches. But the magnitude of this facilitative effect decreased with increasing patch size, and finally shifted to interference in large patches. The results indicated that these negative shifts in plant interactions were not clearly related to 'shrub-island effect' in terms of nutrient accumulation or soil properties improvement, but may be explained by the variation in other abiotic factors, such as soil moisture and available light. Changes in root distribution and canopy structure of N. sphaerocarpa shrubs with the increase of patch size seem to also partly explain the variation in shrub-understory species interactions, as a result of increased above- and below-ground niche overlaps. (C) 2015 Elsevier Masson SAS. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | STRESS-GRADIENT HYPOTHESIS ; POSITIVE SPECIES INTERACTIONS ; PLANT INTERACTIONS ; CHIHUAHUAN DESERT ; SPATIAL-PATTERNS ; SHADE TOLERANCE ; FERTILE ISLANDS ; SOIL-MOISTURE ; CENTRAL CHILE ; NURSE PLANT |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000366079700015 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557168 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Zhao, Wenzhi |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn, Lanzhou 730000, Peoples R China 2.Gansu Agr Univ, Pratacultural Coll, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Gefei,Yang, Qiyue,Wang, Xiaofen,et al. Size-related change in Nitraria sphaerocarpa patches shifts the shrub-annual interaction in an arid desert, northwestern China[J]. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,2015,69:121-128. |
| APA | Zhang, Gefei,Yang, Qiyue,Wang, Xiaofen,&Zhao, Wenzhi.(2015).Size-related change in Nitraria sphaerocarpa patches shifts the shrub-annual interaction in an arid desert, northwestern China.ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY,69,121-128. |
| MLA | Zhang, Gefei,et al."Size-related change in Nitraria sphaerocarpa patches shifts the shrub-annual interaction in an arid desert, northwestern China".ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 69(2015):121-128. |
入库方式： iSwitch采集
来源：寒区旱区环境与工程研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。