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Determination of land salinization causes via land cover and hydrological process change detection in a typical part of Songnen Plain
Wang Zhiyong1,2; Li Lijuan1
2018-08-01
Source PublicationJOURNAL OF GEOGRAPHICAL SCIENCES
ISSN1009-637X
Volume28Issue:8Pages:1099-1112
Corresponding AuthorLi Lijuan(lilj@igsnrr.ac.cn)
AbstractCauses 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.
Keywordchange detection hydrological process land cover land salinization Songnen Plain
DOI10.1007/s11442-018-1544-3
WOS KeywordSOIL-SALINITY ; REGION ; CROP ; PRODUCTIVITY ; CONSTRAINTS ; CHINA
Indexed BySCI
Language英语
Funding ProjectKey Deployment Project of CAS[KFZD-SW-314] ; National Natural Science Foundation of China[91547114]
Funding OrganizationKey Deployment Project of CAS ; National Natural Science Foundation of China
WOS Research AreaPhysical Geography
WOS SubjectGeography, Physical
WOS IDWOS:000440115800005
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54470
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi Lijuan
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
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.
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