干旱区生态环境知识资源中心(Arid): Tracking Lake and Reservoir Changes in the Nenjiang Watershed, Northeast China: Patterns, Trends, and Drivers

Arid

DOI	10.3390/w12041108
	Tracking Lake and Reservoir Changes in the Nenjiang Watershed, Northeast China: Patterns, Trends, and Drivers
	Du, Baojia 1,2; Wang, Zongming 1,3; Mao, Dehua 1; Li, Huiying 4; Xiang, Hengxing 1,2
通讯作者	Mao, Dehua
来源期刊	WATER
EISSN	2073-4441
出版年	2020
卷号	12 期号:4
英文摘要	In terms of evident climate change and human activities, investigating changes in lakes and reservoirs is critical for sustainable protection of water resources and ecosystem management over the Nenjiang watershed (NJW), an eco-sensitive semi-arid region and the third-largest inland waterbody cluster in China. In this study, we established a multi-temporal dataset documenting lake and reservoir (area >= 1 km(2)) changes in this region using an object-oriented image classification method and Landsat series images from 1980 to 2015. Using the structural equation model (SEM), we analyzed the diverse impacts of climatic and anthropogenic variables on lake changes. Results indicated that lakes experienced significant changes with fluctuations over the past 35 years including obvious declines in the total area (by 42%) and number (by 51%) from 1980 to 2010 and a slight increase in the total lake area and number from 2010 to 2015. More than 235 lakes in the size class of 1-10 km2 decreased to small lakes (area < 1 km(2)), while 59 lakes covering 243.75 km(2) disappeared. Total reservoir area and number had continuous increases during the investigated 35 years, with an areal expansion of 54.9% from 919 km(2) to 1422 km(2), and a number increase by 65.3% from 78 to 129. The SEM revealed that the lake area in the NJW had a significant correlation with the mean annual precipitation (MAP), suggesting that the MAP decline clarified most of the lake shrinkage in the NJW. Furthermore, agricultural consumption of water had potential impacts on lake changes, suggested by the significant relationship between cropland area and lake area.
英文关键词	lakes reservoirs Nenjiang watershed climate change Landsat
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000539527500185
WOS关键词	LAND-COVER CLASSIFICATION ; SURFACE-WATER ; METROPOLITAN-AREA ; CLIMATE-CHANGE ; SONGNEN PLAIN ; WETLANDS ; IMAGERY ; IMPACT ; VOLUME ; MODIS
WOS类目	Environmental Sciences ; Water Resources
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/318940
作者单位	1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Natl Earth Syst Sci Data Ctr, Beijing 100101, Peoples R China; 4.Qingdao Univ Technol, Sch Management Engn, Qingdao 266033, Peoples R China
推荐引用方式 GB/T 7714	Du, Baojia,Wang, Zongming,Mao, Dehua,et al. Tracking Lake and Reservoir Changes in the Nenjiang Watershed, Northeast China: Patterns, Trends, and Drivers[J],2020,12(4).
APA	Du, Baojia,Wang, Zongming,Mao, Dehua,Li, Huiying,&Xiang, Hengxing.(2020).Tracking Lake and Reservoir Changes in the Nenjiang Watershed, Northeast China: Patterns, Trends, and Drivers.WATER,12(4).
MLA	Du, Baojia,et al."Tracking Lake and Reservoir Changes in the Nenjiang Watershed, Northeast China: Patterns, Trends, and Drivers".WATER 12.4(2020).