干旱区生态环境知识资源中心(Arid): Using Sentinel-2 Images to Map the Populus euphratica Distribution Based on the Spectral Difference Acquired at the Key Phenological Stage

Arid

DOI	10.3390/f12020147
	Using Sentinel-2 Images to Map the Populus euphratica Distribution Based on the Spectral Difference Acquired at the Key Phenological Stage
	Li, Hao; Shi, Qingdong; Wan, Yanbo; Shi, Haobo; Imin, Bilal
通讯作者	Shi, QD (corresponding author), Xinjiang Univ, Coll Resources & Environm Sci, Urumqi 830046, Peoples R China. ; Shi, QD (corresponding author), Xinjiang Univ, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China. ; Shi, QD (corresponding author), Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China.
来源期刊	FORESTS
EISSN	1999-4907
出版年	2021
卷号	12 期号:2
英文摘要	Populus euphratica is an important tree species in desert ecosystems. The protection and restoration of natural Populus euphratica forests requires accurate positioning information. The use of Sentinel-2 images to map the Populus euphratica distribution at a large scale faces challenges associated with discriminating between Populus euphratica and Tamarix chinensis. To address this problem, this study selected the Daliyabuyi Oasis in the hinterland of the Taklimakan Desert as the study site and sought to distinguish Populus euphratica from Tamarix chinensis. First, we determined the peak spectral difference period (optimal time window) between Populus euphratica and Tamarix chinensis within monthly Sentinel-2 time-series images. Then, an appropriate vegetation index was selected to represent the spectral difference between Populus euphratica and Tamarix chinensis within the key phenological stage. Finally, the maximum entropy method was used to automatically determine the threshold to map the Populus euphratica distribution. The results indicated that the period from 22 April to 1 May was the optimal time window for mapping the Populus euphratica distribution in the Daliyabuyi Oasis. The combination of the inverted red-edge chlorophyll index (IRECI) and the maximum entropy method can effectively distinguish Populus euphratica from Tamarix chinensis. The user's accuracy of the Populus euphratica distribution extraction from single-data Sentinel-2 images acquired within the optimal time window was 0.83, the producer's accuracy was 0.72, and the F1-score was 0.77. This study verified the feasibility of mapping Populus euphratica distribution based on Sentinel-2 images, and analyzed the validity of exploiting spectral differences within the key phenological stage from a single-data image to distinguish between the two species. The results can be used to extract the distribution of Populus euphratica and serve as an auxiliary variable for other plant classification methods, providing a reference for the extraction and classification of desert plants.
英文关键词	remote sensing desert plant tree species time window vegetation index
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:000622528800001
WOS类目	Forestry
WOS研究方向	Forestry
来源机构	新疆大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350243
作者单位	[Li, Hao; Shi, Qingdong; Wan, Yanbo; Shi, Haobo; Imin, Bilal] Xinjiang Univ, Coll Resources & Environm Sci, Urumqi 830046, Peoples R China; [Li, Hao; Shi, Qingdong; Wan, Yanbo; Shi, Haobo; Imin, Bilal] Xinjiang Univ, Inst Arid Ecol & Environm, Urumqi 830046, Peoples R China; [Li, Hao; Shi, Qingdong; Wan, Yanbo; Shi, Haobo; Imin, Bilal] Xinjiang Univ, Key Lab Oasis Ecol, Urumqi 830046, Peoples R China
推荐引用方式 GB/T 7714	Li, Hao,Shi, Qingdong,Wan, Yanbo,et al. Using Sentinel-2 Images to Map the Populus euphratica Distribution Based on the Spectral Difference Acquired at the Key Phenological Stage[J]. 新疆大学,2021,12(2).
APA	Li, Hao,Shi, Qingdong,Wan, Yanbo,Shi, Haobo,&Imin, Bilal.(2021).Using Sentinel-2 Images to Map the Populus euphratica Distribution Based on the Spectral Difference Acquired at the Key Phenological Stage.FORESTS,12(2).
MLA	Li, Hao,et al."Using Sentinel-2 Images to Map the Populus euphratica Distribution Based on the Spectral Difference Acquired at the Key Phenological Stage".FORESTS 12.2(2021).