Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains

doi:10.3390/f9120756

	Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains
	Wu, Miaomiao 2; He, Hong S.2,3; Zong, Shengwei 2; Tan, Xinyuan 2; Du, Haibo 2; Zhao, Dandan 2; Liu, Kai 2; Liang, Yu 1
刊名	FORESTS
	2018-12-01
卷号	9 期号:12 页码:13
关键词	alpine tundra of the Changbai Mountains vegetation changes mountain topographic aspect local topographic aspect scale effects
ISSN号	1999-4907
DOI	10.3390/f9120756
英文摘要	The vegetation of alpine tundra is undergoing significant changes and topography has played a significant role in mediating such changes. The roles of topography varied at different scales. In this study, we intended to identify topographic controls on tundra vegetation changes within the Changbai Mountains of Northeast China and reveal the scale effects. We delineated the vegetation changes of the last three decades using the normalized difference vegetation index (NDVI) time series. We conducted a trend analysis for each pixel to reveal the spatial change and used binary logistic regression models to analyze the relationship between topographic controls at different scales and vegetation changes. Results showed that about 30% of tundra vegetation experienced a significant (p < 0.05) change in the NDVI, with 21.3% attributable to the encroachment of low-altitude plants resulting in a decrease in the NDVI, and 8.7% attributable to the expansion of tundra endemic plants resulting in an increase in the NDVI. Plant encroachment occurred more severely in low altitude than in high altitude, whereas plant expansion mostly occurred near volcanic ash fields at high altitude. We found that plant encroachment tended to occur in complex terrains and the broad-scale mountain aspect had a greater effect on plant encroachment than the fine-scale local aspect. Our results suggest that it is important to include the mountain aspect in mountain vegetation change studies, as most such studies only use the local aspect.
资助项目	National Key Research and Development Projects[2017YFA0604403] ; National Key Research and Development Projects[2016YFA0602301] ; National Natural Science Foundation of China[41501089] ; National Natural Science Foundation of China[31570461]
WOS研究方向	Forestry
语种	英语
出版者	MDPI
WOS记录号	WOS:000455069600028
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/123853]
专题	中国科学院沈阳应用生态研究所
通讯作者	He, Hong S.; Zong, Shengwei
作者单位	1.Chinese Acad Sci, CAS Key Lab Forest Ecol & Management, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China 2.Northeast Normal Univ, Sch Geog Sci, Changchun 130024, Jilin, Peoples R China 3.Univ Missouri, Sch Nat Resources, Columbia, MO 65211 USA
推荐引用方式 GB/T 7714	Wu, Miaomiao,He, Hong S.,Zong, Shengwei,et al. Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains[J]. FORESTS,2018,9(12):13.
APA	Wu, Miaomiao.,He, Hong S..,Zong, Shengwei.,Tan, Xinyuan.,Du, Haibo.,...&Liang, Yu.(2018).Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains.FORESTS,9(12),13.
MLA	Wu, Miaomiao,et al."Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains".FORESTS 9.12(2018):13.