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Evaluating the suitability of different terrains for sustaining human settlements according to the local elevation range in China using the ASTER GDEM
Xiao, Chi-wei; Feng, Zhi-ming; Li, Peng1; You, Zhen; Teng, Jia-kun
2018-12-01
Source PublicationJOURNAL OF MOUNTAIN SCIENCE
ISSN1672-6316
Volume15Issue:12Pages:2741-2751
Corresponding AuthorLi, Peng(lip@igsnrr.ac.cn)
AbstractThe topographical suitability assessment of human settlements (SAHS) creates a solid foundation for regional population distribution and socio-economic development. Local elevation range (LER) is an important factor that can be used to assess the suitability of different terrains for sustaining human settlements. However, current digital elevation model (DEM)-based LER products suffer from some challenges typically because of their subjectively selected neighborhood scales and coarser spatial resolution. In this study, we initially determined the optimal statistical window and then calculated the appropriate LER with the finer resolution data of the Advanced Spaceborne Thermal Emission and Reflection Radiometer Global DEM (ASTER GDEM) products for China. Then, the appropriate LER was used to evaluate the topographical SAHS and its correlations with the national gridded population distribution (1 km x 1 km) in 2010. The results show that the optimal statistical window for calculating a 1 arc-second (about 30 m) resolution GDEM LER for China can be determined using a 51 x 51 grid unit (width x height) within a rectangular neighborhood, corresponding to an area of about 2.34 km(2). Secondly, the LER values in the southern and western China were greater than those of the north and east, showing a trend which consistently reflects the general spatial features of landforms. Finally, the relationship between GDEM LER and population density was highly correlated with the R-2 value of 0.81. It showed that 85.22% of the Chinese population was located in areas where the LER is lower than 500 m. The topographically suitable area within China decreased from the southeastern coastal zone towards the northwestern inland areas due to transition from plains and basins to plateaus and mountains. The total area of moderate to high suitable level was 423.84 x 10(4) km(2), or 44.15% of the total land area, with 88.17% of the national population. Our study demonstrates the usefulness of appropriate LER in evaluating the topographical SAHS as well as its significant impact on population distribution.
KeywordHuman settlements Topographical suitability Local elevation range (LER) Advanced Spaceborne Thermal Emission and Reflection Radiometer Global DEM (ASTER GDEM) China
DOI10.1007/s11629-018-5058-3
WOS KeywordENVIRONMENT SUITABILITY ; POPULATION-DISTRIBUTION ; MOUNTAINOUS AREAS ; RELIEF DEGREE ; LAND-SURFACE ; SRTM ; URBANIZATION ; CITY ; DEM ; V2
Indexed BySCI
Language英语
Funding ProjectNational Key Research and Development Program[2016YFC0503506] ; National Natural Science Foundation of China[41430861]
Funding OrganizationNational Key Research and Development Program ; National Natural Science Foundation of China
WOS Research AreaEnvironmental Sciences & Ecology
WOS SubjectEnvironmental Sciences
WOS IDWOS:000453393800015
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/51437
Collection中国科学院地理科学与资源研究所
Corresponding AuthorLi, Peng
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Xiao, Chi-wei,Feng, Zhi-ming,Li, Peng,et al. Evaluating the suitability of different terrains for sustaining human settlements according to the local elevation range in China using the ASTER GDEM[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(12):2741-2751.
APA Xiao, Chi-wei,Feng, Zhi-ming,Li, Peng,You, Zhen,&Teng, Jia-kun.(2018).Evaluating the suitability of different terrains for sustaining human settlements according to the local elevation range in China using the ASTER GDEM.JOURNAL OF MOUNTAIN SCIENCE,15(12),2741-2751.
MLA Xiao, Chi-wei,et al."Evaluating the suitability of different terrains for sustaining human settlements according to the local elevation range in China using the ASTER GDEM".JOURNAL OF MOUNTAIN SCIENCE 15.12(2018):2741-2751.
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