Mapping Extent Dynamics of Small Lakes Using Downscaling MODIS Surface Reflectance

doi:10.3390/rs9010082

	Mapping Extent Dynamics of Small Lakes Using Downscaling MODIS Surface Reflectance
	Che, Xianghong 1,2; Yang, Yaping 1; Feng, Min 3; Xiao, Tong 4; Huang, Shengli 5; Xiang, Yang 6; Chen, Zugang 1,2
刊名	REMOTE SENSING
	2017
卷号	9 期号:1 页码:21
关键词	downscaling Moderate Resolution Imaging Spectroradiometer (MODIS) lake change BFAST
ISSN号	2072-4292
DOI	10.3390/rs9010082
通讯作者	Yang, Yaping(yangyp@igsnrr.ac.cn)
英文摘要	Lake extent is an indicator of water capacity as well as the aquatic ecological and environmental conditions. Due to the small sizes and rapid water dynamics, monitoring the extent of small lakes fluctuating between 2.5 and 30 km(2) require observations with both high spatial and temporal resolutions. The paper applied an improved surface reflectance (SR) downscaling method (i.e., IMAR (Improved Modified Adaptive Regression model)) to downscale the daily SR acquired by the Moderate Resolution Imaging Spectroradiometer (MODIS) Terra platform to a consistent 250-m resolution, and derived monthly water extent of four small lakes in the Tibetan Plateau (Longre Co, Ayonggongma Co, Ayonggama Co, and Ayongwama Co)) from 2000 to 2014. Using Landsat ETM+ acquired on the same date, the downscaled MODIS SR and identified water extent were compared to the original MODIS, observations downscaled using an early SR downscaling method (MAR (Modified Adaptive Regression model)) and Wavelet fusion. The results showed IMAR achieved the highest correlation coefficients (R-2) (0.89-0.957 for SR and 0.79-0.933 for water extent). The errors in the derived water extents were significantly decreased comparing to the results of MAR and Wavelet fusion, and lakes morphometry of IMAR is more comparable to Landsat results. The detected lake extents dynamic between 2000 and 2014 were analyzed using the trend and season decomposition model (BFAST), indicating an increasing trend after 2005, and it likely had higher correlations with temperature and precipitation variation in the Tibetan region (R-2: 0.598-0.728 and 0.61-0.735, respectively).
资助项目	Geographic Resources and Ecology Knowledge Service System of China Knowledge Center for Engineering Sciences and Technology[CKCEST-2015-1-4] ; National Special Program on Basic Science and Technology Research of China[2013FY110900] ; National Science Foundation[41501117] ; National Data Sharing Infrastructure of Earth System Science
WOS关键词	DIFFERENCE WATER INDEX ; REMOTE-SENSING IMAGE ; LANDSAT IMAGERY ; TIME-SERIES ; FUSION ; DELINEATION ; FLUCTUATIONS ; TEMPERATURE ; REGRESSION ; RESOLUTION
WOS研究方向	Remote Sensing
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000395492600081
资助机构	Geographic Resources and Ecology Knowledge Service System of China Knowledge Center for Engineering Sciences and Technology ; National Special Program on Basic Science and Technology Research of China ; National Science Foundation ; National Data Sharing Infrastructure of Earth System Science
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/64847]
专题	中国科学院地理科学与资源研究所
通讯作者	Yang, Yaping
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.Univ Maryland, Dept Geog Sci, Global Land Cover Facil, College Pk, MD 20742 USA 4.Minist Environm Protect, Dept Ecol Remote Sensing, Satellite Environm Ctr, Beijing 100094, Peoples R China 5.US Forest Serv, USDA, Remote Sensing Lab, Reg 5, Mcclellan, CA 95652 USA 6.ShaanXi Normal Univ, Coll Tourism & Environm, Xian 710100, Peoples R China
推荐引用方式 GB/T 7714	Che, Xianghong,Yang, Yaping,Feng, Min,et al. Mapping Extent Dynamics of Small Lakes Using Downscaling MODIS Surface Reflectance[J]. REMOTE SENSING,2017,9(1):21.
APA	Che, Xianghong.,Yang, Yaping.,Feng, Min.,Xiao, Tong.,Huang, Shengli.,...&Chen, Zugang.(2017).Mapping Extent Dynamics of Small Lakes Using Downscaling MODIS Surface Reflectance.REMOTE SENSING,9(1),21.
MLA	Che, Xianghong,et al."Mapping Extent Dynamics of Small Lakes Using Downscaling MODIS Surface Reflectance".REMOTE SENSING 9.1(2017):21.