Journal of Geographical Sciences >
Environmental suitability evaluation for human settlements in an arid inland river basin: A case study of the Shiyang River Basin
Received date: 2012-06-22
Revised date: 2012-08-06
Online published: 2013-02-20
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 km2 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 km2 .The common suitable region is mainly distributed outside the counties of Yongchang,Jinchuan and most parts of Minqin County,which are about 23328.04 km2 ,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 km2 ,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 km2 ,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 resi- dential 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.
WEI Wei, SHI Peiji, ZHOU Junju, FENG Haichun, WANG Xufeng, WANG Xueping . 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 . DOI: 10.1007/s11442-013-1013-y
[1] Chang Zhaofeng,Han Fugui,2005.Natural and artificial factors and their transfer on sandy desertification of lower reaches of Shiyang River Basin.Arid Land Geography,28(2):150–156.(in Chinese)
[2] Emmanuel R,2005.Thermal comfort implications of urbanization in a warm-humid city:The Colombo Metropolitan Region(CMR),Sri Lanka.Building and Environment,40(12):1591–1601.
[3] Feng Zhiming,Tang Yan,Yang Yanzhao et al.,2008a.Relief degree of land surface and its influence on population distribution in China.Journal of Geographical Sciences,18(2):237–246.
[4] Feng Zhiming,Tang Yan,Yang Yanzhao et al.,2008b.Establishment and application of human settlements environment index model(HEI)based on GIS.Acta Geographica Sinica,63(12):1327–1336.(in Chinese)
[5] Feng Zhiming,Yang Yanzhao,Zhang Dan et al.,2009.Natural environment suitability for human settlements in China based on GIS.Journal of Geographical Sciences,19(4):437–446.
[6] Gilbert A,1998.An urbanizing world:Global report on human settlements.Habitat International,22(1):75–77.
[7] Hao Huimei,Ren Zhiyuan,2009.Evaluation of nature suitability for human settlement in Shaanxi Province based on grid data.Acta Geographica Sinica,64(4):498–506.(in Chinese)
[8] Huang Yu,Luo Zhiyong,Yang Wunian,2008.Urban dwelling feasibility evaluation research based on GIS.Science of Surveying and Mapping,33(1):126–129.(in Chinese)
[9] Li Bohua,Liu Peilin,2010.Rural human settlement environment:A new field of human settlement environment research.Resource Development&Market,26(6):524-528.(in Chinese)
[10] Li Chen,Zhang Wenzhong,Li Yejin,2008.Urban residential suitability evaluation of Dalian residents.Acta Geographica Sinica,63(10):1022–1032.(in Chinese)
[11] Li Xueming,Ni Yujuan,2009.Assessment on the coordination between urban human settlements and urbanization of outstanding liable cities in China in recent decade.Journal of Arid Land Resources and Environment, 23(3):8–14.(in Chinese)
[12] Liu Huimin,2011.Effect degree modeling of large-scale infrastructure to geo-regional human settlements.Population,Resources and Environment,21(11):139–145.(in Chinese)
[13] Liu Mingchun,2006.Analysis and assessment of climatic dry and wet conditions in Shiyang River Basin.Chinese Journal of Ecology,25(8):880–884.(in Chinese)
[14] Spagnolo J,Dear R D,2003.A field study of thermal comfort in outdoor and semi-outdoor environments in subtropical Sydney Australia.Building and Environment,38(5):721–738.
[15] Tang Guoan,Li Fayuan,Liu Xuejun,2002.The Course of Digital Elevation Mode.Beijing:Science Press.(in Chinese)
[16] Wang Qi,Shi Ji’an,2003.Current situation of the environment in Shiyang river basin and its evolutionary trends.
[17] Journal of Desert Research,23(l):46–55.(in Chinese)
[18] Wang Yang,Zhao Wanmin,2012.Information theory for human settlements research and its info-spectrum im- ages system.Acta Geographica Sinica,64(2):253–264.(in Chinese)
[19] Wei Wei,2009.Landscape patterns analysis and the optimal utilization of Shiyang river basin based on GIS and RS approach
[D].Lanzhou.Northwest Normal University.(in Chinese)
[20] William F Allman,Betsy Wagner,Liang Wenju et al.,1993.Climate and origin of humankind.World Science,(5): 29–32.
[21] Xiao Duning,Li Xiaoyu,Song Dongmei,2005.Landscape changes and ecological reconstruction in Minqin Huqu oasis.Acta Ecologica Sinica,25(10):2476–2483.(in Chinese)
[22] Xiong Liya,Xia Chaozong,Liu Xiyun et al.,2004.RS and GIS based study on land productivity and population supporting capacity:Taking Xiangjiaba Reservoir area as an example.Geographical Research,23(1):10–18. (in Chinese)
[23] Yang Jun,Li Xueming,Li Yonghua,2012.Assessment on spatial differences of human settlement environment in communities based on DPSIRM model:The case study of Dalian.Geographical Research,31(1):135–143.(in Chinese)
[24] Yu Chunlong,Zhou Ruoqi,2008.Research on the suitable evaluation method of the human settlements environment in small basin based on grid data.Huazhong Architecture,26(1):4–7.(in Chinese)
[25] Zhou Li,Ren Zhiyuan,2011.Research on evaluation of natural suitability for human settlement in guanzhong region based on GIS.Resource Development&Market,27(2):160–163.(in Chinese)
[26] Zhou Qinhua,2009.Human Settlements in Valley of Loess Plateau:Research on Human Settlement Spatial Form of North Region of Shanxi Province.Beijing:China Construction Industry Press.(in Chinese)
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