Differences of Regulative Flexibility between Hydrological Isolated and Connected Lakes in a Large Floodplain: Insight from Inundation Dynamics and Landscape Heterogeneity

doi:10.3390/w12040991

	Differences of Regulative Flexibility between Hydrological Isolated and Connected Lakes in a Large Floodplain: Insight from Inundation Dynamics and Landscape Heterogeneity
	Teng, Jiakun 3,4; Xia, Shaoxia 3; Liu, Yu 3; Cui, Peng 1,2,5; Chen, Jiang 6; Si, Wuwei 7; Duan, Houlang 3,4; Yu, Xiubo 3,4
刊名	WATER
	2020-04-01
卷号	12 期号:4 页码:15
关键词	inundation area hydrological connectivity remote sensing images Google Earth Engine Yangtze River Floodplain
DOI	10.3390/w12040991
通讯作者	Xia, Shaoxia(xiasx@igsnrr.ac.cn) ; Yu, Xiubo(yuxb@igsnrr.ac.cn)
英文摘要	The inundation areas of floodplains are crucial to wetland ecosystems, especially in supporting biodiversity. Accurately identifying the spatial and temporal patterns of inundation areas is important for understanding floodplain ecosystem processes. Here, lakes in the Yangtze River Floodplain were divided into two types according to hydrological conditions: the natural connected lakes (Dongting Lake and Poyang Lake) with natural water level fluctuations and the isolated lakes (lakes in Jianghan Plain) with stable water levels. We established a method to identify inundation areas using multi-sources remote sensing data based on the Google Earth Engine. The dynamics of inundation areas were determined, and the relative indices were calculated in common year (2017) and a drought year (2018). The differences between the connected lakes and the isolated lakes were analyzed, and impacts of hydrological fluctuations on inundation area and habitat quality were evaluated. The results show that lakes with natural hydrological fluctuations have a greater regulative flexibility, with both patch density (PD) and submerged elasticity index (SEI) values higher than that of isolated lakes. The trend of the vegetation index in the connected lakes and in the isolated lakes is also different. The mean EVI in Dongting Lake and Poyang Lake showed a U-shaped trend which is similar to the shape of the trend of PD. The trend of mean enhanced vegetation index (EVI) in the isolated lakes is the opposite and has a lower range of variation over a year. This study provides new indicators and rapid methods for habitat quality assessment in floodplains, as well as presenting scientific information useful for improving wetland management in the middle and lower Yangtze River.
资助项目	National Natural Science Foundation of China[41701212] ; Strategic Priority Research Program of the Chinese Academy of Science[XDA23040203] ; Biodiversity Investigation, Observation and Assessment Program (2019-2023) of the Ministry of Ecology and Environment of China
WOS关键词	WATER-LEVEL FLUCTUATIONS ; POYANG LAKE ; SURFACE-WATER ; HABITAT SELECTION ; RIVER ; IMPACTS ; CHINA ; RESPONSES ; WETLANDS ; QUALITY
WOS研究方向	Water Resources
语种	英语
出版者	MDPI
WOS记录号	WOS:000539527500068
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Science ; Biodiversity Investigation, Observation and Assessment Program (2019-2023) of the Ministry of Ecology and Environment of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162246]
专题	中国科学院地理科学与资源研究所
通讯作者	Xia, Shaoxia; Yu, Xiubo
作者单位	1.State Environm Protect Key Lab Biosafety, Nanjing 210042, Peoples R China 2.Biodivers Comprehens Observat Stn Wuyi Mt, State Environm Protect Sci Observat & Res Stn Eco, Nanjing 210042, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100101, Peoples R China 5.Minist Ecol & Environm, Nanjing Inst Environm Sci, Res Ctr Nat Conservat & Biodivers, Nanjing 210042, Jiangsu, Peoples R China 6.Off Poyang Lake Water Control Project Construct J, Nanchang 330009, Jiangxi, Peoples R China 7.Poyang Lake Hydrol Bur Jiangxi, Jiujiang 332800, Peoples R China
推荐引用方式 GB/T 7714	Teng, Jiakun,Xia, Shaoxia,Liu, Yu,et al. Differences of Regulative Flexibility between Hydrological Isolated and Connected Lakes in a Large Floodplain: Insight from Inundation Dynamics and Landscape Heterogeneity[J]. WATER,2020,12(4):15.
APA	Teng, Jiakun.,Xia, Shaoxia.,Liu, Yu.,Cui, Peng.,Chen, Jiang.,...&Yu, Xiubo.(2020).Differences of Regulative Flexibility between Hydrological Isolated and Connected Lakes in a Large Floodplain: Insight from Inundation Dynamics and Landscape Heterogeneity.WATER,12(4),15.
MLA	Teng, Jiakun,et al."Differences of Regulative Flexibility between Hydrological Isolated and Connected Lakes in a Large Floodplain: Insight from Inundation Dynamics and Landscape Heterogeneity".WATER 12.4(2020):15.