Using MODIS-NDVI Time Series to Quantify the Vegetation Responses to River Hydro-Geomorphology in the Wandering River Floodplain in an Arid Region

doi:10.3390/w13162269

	Using MODIS-NDVI Time Series to Quantify the Vegetation Responses to River Hydro-Geomorphology in the Wandering River Floodplain in an Arid Region
	Ablat, Xarapat 1; Liu, Gaohuan 2; Liu, Qingsheng 2; Huang, Chong 2
刊名	WATER
	2021-08-01
卷号	13 期号:16 页码:16
关键词	riparian vegetation fluvial processes hydro-geomorphological dynamics MODIS-NDVI time-series the upper Yellow River dry regions
DOI	10.3390/w13162269
通讯作者	Liu, Gaohuan(liugh@lreis.ac.cn) ; Huang, Chong(huangch@lreis.ac.cn)
英文摘要	Vegetation, hydrology and geomorphology are three major elements of the floodplain ecosystem on Earth. Although the normalized difference vegetation index (NDVI) has been used extensively to characterize floodplain vegetation growth, vigour and biomass, methods for quantifying the various distinct responses of floodplain vegetation to hydro-geomorphological changes in different lateral belts in arid regions are still needed. In this study, the Linhe reach was divided into four lateral belts based on their hydro-geomorphological characteristics, and the Moderate Resolution Imaging Spectroradiometer (MODIS)-NDVI time series statistical indicators were used to characterise the distinct changing the patterns of vegetation growth in different belts. The response of floodplain vegetation to river hydro-geomorphology in each belt was analysed. The result showed that the average maximum NDVI value in the regular inundation area was 0.23 and higher than that in the other lateral belts. The correlation between the water persistence time and peak NDVI value in the regular water inundation area was significant (rho = 0.84), indicating that in contrast to highly frequent or extremely rare water inundation, regular water inundation provides significant benefits to floodplains. Continuous or highly frequent inundation may cause decreased vegetation productivity. Overall, our results suggest that the vegetation greenness response to the river hydro-geomorphology is different from the river to the edge of the floodplain. Thus, a better understanding of the interactions between the floodplain vegetation and river hydro-morphology and river water resource management in arid-region floodplains.
资助项目	International Cooperation Projects of the National Natural Science Foundation Committee of China ; Mum River Basin[41661144030] ; Ministry of Science and Technology of the People's Republic of China
WOS关键词	YELLOW-RIVER ; LANDSAT TM ; DYNAMICS ; INDEXES ; VARIABILITY ; OPERATION ; PATTERNS ; CREEK ; MODEL ; WATER
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000689875000001
资助机构	International Cooperation Projects of the National Natural Science Foundation Committee of China ; Mum River Basin ; Ministry of Science and Technology of the People's Republic of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/165197]
专题	中国科学院地理科学与资源研究所
通讯作者	Liu, Gaohuan; Huang, Chong
作者单位	1.Sun Yat Sen Univ, Sch Geog & Planning, Dept Water Resources & Environm, Guangzhou 510275, Guangdong, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ablat, Xarapat,Liu, Gaohuan,Liu, Qingsheng,et al. Using MODIS-NDVI Time Series to Quantify the Vegetation Responses to River Hydro-Geomorphology in the Wandering River Floodplain in an Arid Region[J]. WATER,2021,13(16):16.
APA	Ablat, Xarapat,Liu, Gaohuan,Liu, Qingsheng,&Huang, Chong.(2021).Using MODIS-NDVI Time Series to Quantify the Vegetation Responses to River Hydro-Geomorphology in the Wandering River Floodplain in an Arid Region.WATER,13(16),16.
MLA	Ablat, Xarapat,et al."Using MODIS-NDVI Time Series to Quantify the Vegetation Responses to River Hydro-Geomorphology in the Wandering River Floodplain in an Arid Region".WATER 13.16(2021):16.