Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain

doi:10.1007/s11442-018-1544-3

	Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain
	Wang Zhiyong 1,2; Li Lijuan 1
刊名	JOURNAL OF GEOGRAPHICAL SCIENCES
	2018-08-01
卷号	28 期号:8 页码:1099-1112
关键词	change detection hydrological process land cover land salinization Songnen Plain
ISSN号	1009-637X
DOI	10.1007/s11442-018-1544-3
通讯作者	Li Lijuan(lilj@igsnrr.ac.cn)
英文摘要	Causes of land salinization were determined via land cover and hydrological process change detection in a typical part of Songnen Plain. The area of saline land increased from 4627 km(2) in 1980 to 5416 km(2) in 2000, and then decreased to 5198 km(2) in 2015. The transformation between saline land and other land covers happened mainly before 2000, and saline land had transformation relationship mainly with cropland, grassland, and water body. From 1979 to 2007, groundwater depth fluctuated to increase and was mainly deeper than 3.3 m. Spatially, the area of the region where groundwater depth was deeper than 3.3 m increased from 46.7% in 1980 to 84% in 2000, while the area of the region almost occupied the whole region after 2000. Precipitation and evaporation changed little, while runoff decreased substantially. Shallow groundwater, change of cropland, grassland, and water body induced from human activities and decrease of runoff and increase of irrigation and water transfer from outer basin were the main reasons for land salinization before 2000. After 2000, groundwater with relatively great depth could not exert great influence on land salinization. Protection of grassland and wetland prevented the increase of the area of saline land.
资助项目	Key Deployment Project of CAS[KFZD-SW-314] ; National Natural Science Foundation of China[91547114]
WOS关键词	SOIL-SALINITY ; REGION ; CROP ; PRODUCTIVITY ; CONSTRAINTS ; CHINA
WOS研究方向	Physical Geography
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000440115800005
资助机构	Key Deployment Project of CAS ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54469]
专题	中国科学院地理科学与资源研究所
通讯作者	Li Lijuan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhiyong,Li Lijuan. Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2018,28(8):1099-1112.
APA	Wang Zhiyong,&Li Lijuan.(2018).Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain.JOURNAL OF GEOGRAPHICAL SCIENCES,28(8),1099-1112.
MLA	Wang Zhiyong,et al."Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain".JOURNAL OF GEOGRAPHICAL SCIENCES 28.8(2018):1099-1112.