干旱区生态环境知识资源中心(Arid): Different remote sensing indicators reveal the transitions of two states along elevation gradients within the Xinjiang Tianshan Bogda Natural World Heritage Site

Arid

DOI	10.1016/j.jag.2022.102842
	Different remote sensing indicators reveal the transitions of two states along elevation gradients within the Xinjiang Tianshan Bogda Natural World Heritage Site
	Wan, Hong; Guo, Peng; Luo, Lei; Zhao, Yanchuang; Zhao, Yan; Wang, Xinyuan
通讯作者	Guo, P
来源期刊	INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
ISSN	1569-8432
EISSN	1872-826X
出版年	2022
卷号	111
英文摘要	In mountainous regions, steppe degradation and desertification, which are transition processes between temperate deserts and montane steppes, are considerably affected by climate change and human disturbance. Consequently, the study of the transition ranges along the elevation gradient is particularly important for the protection, restoration, and sustainable development of natural heritage sites in arid areas. In this study, frequency analysis and the Akaike information criterion (AIC) were used to reveal the existence of two distinct potential states based on three remote sensing indicators (NDVI, normalized difference vegetation index; FVC, fractional vegetation cover; and LST, land surface temperature). The transition ranges of the two ecosystem states along altitudinal zonation were then quantitatively identified using potential energy analysis with a combination of multiple indicators. The results showed that the frequency distribution exhibited two conspicuous modes, the AIC exhibited a sharp decline from modes 1 to 2 and then remained stable with slight fluctuations from modes 2 to 5. Both features of the three indicators indicated the existence of two distinct potential states: temperate deserts and montane steppes. The two states and their transitions along the elevation gradient were detected using a potential analysis model for all three indicators. The results showed that the three indicators revealed the existence of two states, and the state with high NDVI/FVC values or low LST values began to show more attraction than the state with low NDVI/FVC values or high LST values at approximately an elevation of 1066 m. Temperate deserts below an elevation of 1060 m with montane steppes occurring above 1094 m, and two states coexisted between them. Furthermore, the distribution characteristics of local indicators of spatial association high-high, low-low, and not significant with elevation were analyzed, and the transition range (NDVI/FVC, 1040-1100 m; LST, 1040-1150 m) between different modes was consistent with those of the potential analysis, indicating the reliability of the results. This study successfully introduced the theory of multi-stable states and shifts between ecosystem states, and the potential energy analysis model into the study of natural altitudinal zones for mountainous natural world heritage sites, which will provide a scientific basis for the protection and restoration of steppe degradation in alpine regions.
英文关键词	Ecosystem states Altitudinal zonation Transitions LISA Bogda natural world heritage site
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000811624000001
WOS关键词	CATASTROPHIC SHIFTS ; VEGETATION DYNAMICS ; NDVI ; GRASSLAND ; DEGRADATION ; MODIS ; SAVANNA ; CLIMATE ; STEPPE ; FOREST
WOS类目	Remote Sensing
WOS研究方向	Remote Sensing
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393116
推荐引用方式 GB/T 7714	Wan, Hong,Guo, Peng,Luo, Lei,et al. Different remote sensing indicators reveal the transitions of two states along elevation gradients within the Xinjiang Tianshan Bogda Natural World Heritage Site[J],2022,111.
APA	Wan, Hong,Guo, Peng,Luo, Lei,Zhao, Yanchuang,Zhao, Yan,&Wang, Xinyuan.(2022).Different remote sensing indicators reveal the transitions of two states along elevation gradients within the Xinjiang Tianshan Bogda Natural World Heritage Site.INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION,111.
MLA	Wan, Hong,et al."Different remote sensing indicators reveal the transitions of two states along elevation gradients within the Xinjiang Tianshan Bogda Natural World Heritage Site".INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION 111(2022).