IGSNRR OpenIR
Identifying terraces in the hilly and gully regions of the Loess Plateau in China
Sun, Wenyi1,3; Zhang, Yongqiang2,3; Mu, Xingmin1; Li, Jiuyi2; Gao, Peng1; Zhao, Guangju1; Dang, Tianmin4; Chiew, Francis3
2019-08-07
Source PublicationLAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
Pages13
Corresponding AuthorMu, Xingmin(muxm2014@gmail.com) ; Li, Jiuyi(lijiuyi@igsnrr.ac.cn)
AbstractTerrace identification is the basis for understanding quantity, quality, and land covers of terraces and their effects on agriculture production and various surface processes, for example, hydrological and ecological processes. However, there are some drawbacks and limitations in the automatic extraction of terraces, such as difficulty of outlining the overall boundary for individual terrace and the limitation of applying methods and parameters. In this study, we used machine learning methods on the basis of Geographic Object-Based Image Analysis using K-nearest neighbours and spectral angle mapper algorithms to extract terraces in the hilly and gully regions on the Loess Plateau, China. This study relied on medium-resolution image Landsat-8 combined with Advanced Spaceborne Thermal Emission and Reflection Radiometer Global Digital Elevation Model to extract the overall boundary of terraces and relies on high-resolution images GaoFen-1 to extract the terraced edges of terraces. It used the methods of principal component analysis and Laplacian convolution filter to enhance and extract terraced edges inside of the boundary of terraces. Our estimates are with overall accuracy of 62.2% in K-nearest neighbours and 74.8% in spectral angle mapper methods, indicating the advantages of the proposed method despite the use of much lower resolution data than previous studies that used both high-resolution terrain and remote sensing imageries data. This study highlights the importance of using appropriate methods plus reasonable spatial resolution of remote sensing data for outlining the overall boundary of terraces in the hilly and gully regions.
Keywordidentification KNN the Loess Plateau SAM terraces
DOI10.1002/ldr.3405
WOS KeywordCLASSIFICATION ; IDENTIFICATION ; BENEFITS ; EROSION
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41430861] ; National Natural Science Foundation of China[41501293] ; National Key Research and Development Program of China[2014FY210100] ; National Key Research and Development Program of China[2016YFC0402401]
Funding OrganizationNational Natural Science Foundation of China ; National Key Research and Development Program of China
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS SubjectEnvironmental Sciences ; Soil Science
WOS IDWOS:000481148500001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/69058
Collection中国科学院地理科学与资源研究所
Corresponding AuthorMu, Xingmin; Li, Jiuyi
Affiliation1.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China
2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China
3.CSIRO, Land & Water, Canberra, ACT 2601, Australia
4.Yellow River Conservancy Commiss, Upper & Middle Yellow River Bur, Xian 710021, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Sun, Wenyi,Zhang, Yongqiang,Mu, Xingmin,et al. Identifying terraces in the hilly and gully regions of the Loess Plateau in China[J]. LAND DEGRADATION & DEVELOPMENT,2019:13.
APA Sun, Wenyi.,Zhang, Yongqiang.,Mu, Xingmin.,Li, Jiuyi.,Gao, Peng.,...&Chiew, Francis.(2019).Identifying terraces in the hilly and gully regions of the Loess Plateau in China.LAND DEGRADATION & DEVELOPMENT,13.
MLA Sun, Wenyi,et al."Identifying terraces in the hilly and gully regions of the Loess Plateau in China".LAND DEGRADATION & DEVELOPMENT (2019):13.
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