Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin

doi:10.1007/s11442-013-1013-y

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	Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin
	Wei Wei 1; Shi Peiji 1; Zhou Junju 1; Feng Haichun 2; Wang Xufeng 2; Wang Xueping3
	2013-04
发表期刊	JOURNAL OF GEOGRAPHICAL SCIENCES
ISSN	1009-637X
卷号	23 期号:2 页码:331-343
摘要	The study employs slope, aspect, relief degree of land surface, land use, vegetation index, hydrology and climate, as evaluation indexes to set up the Human Settlements Environmental Index (HEI) model to evaluate the environmental suitability for human settlements in the Shiyang River Basin. By using GIS spatial analysis technology, such as spatial overlay analysis, buffer analysis and density analysis, the environmental suitability of the human settlement spatial situation and spatial pattern are established to analyze their spatial distribution. The results show that the index of suitability for human settlements in the Shiyang River Basin is between 17.13 and 84.32. In general, suitability for human settlements decreases from the southwest to the northeast. Seen from an area pattern, the suitable region is mainly distributed in the Minqin oasis, Wuwei oasis and Changning basin, which are about 1080.01 km(2) and account for 2.59% of the total area. Rather and comparatively suitable region is mainly distributed around the counties of Gulang, Yongchang and north of Tianzhu, which is about 1100.30 km(2). The common suitable region is mainly distributed outside the counties of Yongchang, Jinchuan and most parts of Minqin County, which are about 23328.04 km(2), accounting for 56.08% of the total area. The unsuitable region is mainly distributed upstream and to the north of the river, which is about 9937.60 km(2), accounting for 23.89% of the total area. Meanwhile, the least suitable region is distributed around the Qilian Mountains, which are covered by snow and cold desert and lie in the intersecting area between the Tengger Desert and Badain Jaran Desert. The total area is about 6154.05 km(2), accounting for 14.79% of the total area. Suitable regions for human habitation are mainly distributed around rivers in the form of ribbons and batches, while others are scattered. The distribution pattern is identical to the residential spatial pattern. In addition, the relationships between HEI and other factors have been analyzed. There is a clear logarithmic correlation between the residential environment and population, that is, the correlation coefficient between the evaluation value and population density reaches 0.851. There is also a positive correlation between the residential environment and economy, which reaches an evaluation value of 0.845 between the residential environment and GDP. Results also show that the environment is out of bearing with the existing population in Shiyang River Basin. Spatial distribution of population is profoundly affected by severe environmental problems, such as the expanded deserts, the hilly terrain and the changing climate. Surface water shortage and slow economic growth are bottlenecks for suitable human settlement in the Shiyang River Basin. Combining these problems with planning for construction of new country and the exploitation of local land, some residential areas should be relocated to improve the residential environment.
关键词	geographic information systems suitability for human settlement arid inland area Shiyang River Basin
DOI	10.1007/s11442-013-1013-y
收录类别	SCI ; SCIE
语种	英语
资助项目	Youth Fund Projects of Science and Technology from Gansu Province[1107RJYA077]
WOS研究方向	Physical Geography
WOS类目	Geography, Physical
WOS记录号	WOS:000314278700011
出版者	SCIENCE PRESS
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/34726
专题	基建规划处
通讯作者	Wei Wei
作者单位	1.NW Normal Univ, Coll Earth & Environm Sci, Lanzhou 730070, Peoples R China; 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China; 3.Lanzhou Univ Technol, Sch Civil Engn, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Wei Wei,Shi Peiji,Zhou Junju,et al. Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2013,23(2):331-343.
APA	Wei Wei,Shi Peiji,Zhou Junju,Feng Haichun,Wang Xufeng,&Wang Xueping.(2013).Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin.JOURNAL OF GEOGRAPHICAL SCIENCES,23(2),331-343.
MLA	Wei Wei,et al."Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin".JOURNAL OF GEOGRAPHICAL SCIENCES 23.2(2013):331-343.