The relationship between threshold-based and inflexion-based approaches for extraction of land surface phenology

doi:10.1016/j.rse.2017.07.020

	The relationship between threshold-based and inflexion-based approaches for extraction of land surface phenology
	Shang, Rong 1,2; Liu, Ronggao 1; Xu, Mingzhu 3; Liu, Yang 1; Zuo, Lu 1,2; Ge, Quansheng 1
刊名	REMOTE SENSING OF ENVIRONMENT
	2017-09-15
卷号	199 页码:167-170
关键词	Land surface phenology Vegetation growth trajectory SOS EOS MODIS
ISSN号	0034-4257
DOI	10.1016/j.rse.2017.07.020
通讯作者	Liu, Ronggao(liurg@igsnrr.ac.cn)
英文摘要	The inflexion-based and threshold-based approaches are the two most popular approaches for extracting land surface phenology (LSP). The first approach uses inflexion point of the vegetation growth curve to determine the start-of-season (SOS) and end-of-season (EOS), while the second approach identifies SOS and EOS with a predefined percentage of vegetation growth amplitude. These two approaches have long been thought to be independent. In this letter, we investigated the relationship between the two approaches for extracting SOS. It was found that the thresholds at several key points in the inflexion-based approach are constant. The threshold at the inflexion point for SOS and EOS is 9.18% of vegetation growth amplitude. This threshold can link the SOS derived from the two approaches, which made it possible to determine the significant vegetation growth transitions for the threshold-based approach. Other thresholds for SOS retrieval, such as commonly-used 10% and 20% of vegetation growth amplitude, were also analyzed using a global reference NDVI. A high SOS difference between the two approaches indicates a slow vegetation growth. (C) 2017 Elsevier Inc. All rights reserved.
资助项目	Key Research and Development Programs for Global Change and Adaptation[2016YFA0600201] ; Distinctive Institutes development program, CAS[TSYJS04] ; National Natural Science Foundation from China[41171285]
WOS关键词	VEGETATION PHENOLOGY ; TIME-SERIES ; MODIS
WOS研究方向	Environmental Sciences & Ecology ; Remote Sensing ; Imaging Science & Photographic Technology
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000410469100013
资助机构	Key Research and Development Programs for Global Change and Adaptation ; Distinctive Institutes development program, CAS ; National Natural Science Foundation from China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/61893]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Ronggao
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nanjing Univ, Int Inst Earth Syst Sci, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Shang, Rong,Liu, Ronggao,Xu, Mingzhu,et al. The relationship between threshold-based and inflexion-based approaches for extraction of land surface phenology[J]. REMOTE SENSING OF ENVIRONMENT,2017,199:167-170.
APA	Shang, Rong,Liu, Ronggao,Xu, Mingzhu,Liu, Yang,Zuo, Lu,&Ge, Quansheng.(2017).The relationship between threshold-based and inflexion-based approaches for extraction of land surface phenology.REMOTE SENSING OF ENVIRONMENT,199,167-170.
MLA	Shang, Rong,et al."The relationship between threshold-based and inflexion-based approaches for extraction of land surface phenology".REMOTE SENSING OF ENVIRONMENT 199(2017):167-170.