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DOI	10.1002/ecs2.2851
	Controlling factors of plant community composition with respect to the slope aspect gradient in the Qilian Mountains
	Qin, Yanyan; Adamowski, Jan F.; Deo, Ravinesh C.; Hu, Zeyong; Cao, Jianjun; Zhu, Meng; Feng, Qi
发表日期	2019
ISSN	2150-8925
卷号	10 期号:9
英文摘要	Slope aspect can affect soil temperature and soil type distribution, which, in turn, is likely to influence plant community composition. Three Qilian mountains, located in the northeastern part of the Qinghai-Tibetan Plateau, China, with four distinct slope aspects including south-facing (SF), southwest-facing (SW), northwest-facing (NW), and north-facing (NF) slope aspects, were studied to investigate the impact of slope aspect on plant assemblages. The results indicated that the environmental conditions were favorable under the NF and NW slope aspects as the soil water, soil organic carbon (SOC), and soil total nitrogen (STN) contents were significantly higher, and soil temperature (ST) and soil bulk density (SBD) were significantly lower than under the SF and SW aspects. Under all slope aspects, however, SOC, STN, and soil total phosphate in the top 0.2 m of topsoil accounted for about 60% of its total quantity, to a soil depth of 0.6 m. The plant communities on the SF and SW slopes were found to be primarily composed of Poa pratensis, Potentilla anrisena, and Carex aridula. In contrast, the plant community on the NW slope was mainly composed of Kobresia humilis, Carex crebra, and Potentilla bifurca, while on the NF slope it was mainly composed of Picea crassifolia, Carex scabrirostris, and Polygonum macrophyllum. The order of the influence of environmental factors on species distributions was ST > SBD > sand > STN. Results suggest that the slope aspect has an important role in the regulation of the soil environment and plant assemblages and that ST and SBD were the main factors influencing plant community composition. Furthermore, evidence from this study suggests that these mountains will become increasingly vulnerable to global warming. Thus, the plant community composition on these mountains must be monitored continuously in order to allow for strategic adaptive management.
关键词	abiotic factor mountainous environment plant species composition sustainable resources use topographic factor
学科领域	Environmental Sciences & Ecology
语种	英语
WOS研究方向	Ecology
来源期刊	ECOSPHERE
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/112071
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Ecohydrol Inland River Basins, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Qin, Yanyan,Adamowski, Jan F.,Deo, Ravinesh C.,et al. Controlling factors of plant community composition with respect to the slope aspect gradient in the Qilian Mountains[J]. 中国科学院西北生态环境资源研究院,2019,10(9).
APA	Qin, Yanyan.,Adamowski, Jan F..,Deo, Ravinesh C..,Hu, Zeyong.,Cao, Jianjun.,...&Feng, Qi.(2019).Controlling factors of plant community composition with respect to the slope aspect gradient in the Qilian Mountains.ECOSPHERE,10(9).
MLA	Qin, Yanyan,et al."Controlling factors of plant community composition with respect to the slope aspect gradient in the Qilian Mountains".ECOSPHERE 10.9(2019).