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城乡一体化背景下天山北坡四市基础设施建设评价
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作者 付煜 袁培 《内蒙古科技与经济》 2021年第9期19-23,共5页
笔者通过熵值法在城乡一体化背景下对所选取的天山北坡四市进行了实证分析,充分了解了各市基础设施建设现状,并结合实际分析后提出了合理建议,以期为新疆天山北坡不断完善基础设施,加速推进城乡一体化进程提供参考依据。
关键词 城乡一体化 基础设施 熵值法 天山北坡四
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对定西、天水两地市城乡信用社情况的调查
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作者 路国英 卢建魁 冷云竹 《甘肃金融》 2000年第3期41-43,51,共4页
关键词 定西地区 天山市 信用社 农村信用社 发展 对策
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Regional Structure and Spatial Morphology Characteristics of Oasis Urban Agglomeration in Arid Area——A Case of Urban Agglomeration in Northern Slope of Tianshan Mountains,Northwest China 被引量:2
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作者 ZHANG Yufang YANG Degang +2 位作者 ZHANG Xinhuan DONG Wen ZHANG Xiaolei 《Chinese Geographical Science》 SCIE CSCD 2009年第4期341-348,共8页
It is great important to the health development of urban agglomeration to correctly understand the formation and development law of regional structure of urban agglomeration.Employing the analysis methods like fractal... It is great important to the health development of urban agglomeration to correctly understand the formation and development law of regional structure of urban agglomeration.Employing the analysis methods like fractal theory and quantitative statistics,coupling with the use of remote sensing images and other spatial data,this article discusses the urban agglomeration of oasis on the northern slope of the Tianshan Mountains in an arid area,and conducts the researches on its city scale,spatial distribution and individual form from 1990 to 2005.The result shows that it has loose hierarchical scale structure and polarization trend of population distribution while its hierarchical scale structure tends to mature.Under the influence of natural conditions,the spatial layout of urban agglomeration of oasis has macro characteristics that suggest cities distributed along oasis edges(dense or sparse),spatially expand along rivers,and cluster around traffic branches.The connectivity among the cities is high and shows an internal organization form of a banding distribution.The whole spatial shape of the internal structure of cities presents a "dumbbell" form,with mononuclear phenomenon receding and multi-nuclear appearing gradually.Individual cities spatially expand along rivers,portraying a long strip appearance.It indicates that the urban agglomeration of oasis shows regular and close structure but with a tendency to be complicated form and the loose structure.In the development of urban agglomeration,the authors recommend that the development of the city with good economic development conditions should be strengthened,and more attention be put into regional planning. 展开更多
关键词 fractal theory scale structure urban agglomeration of oasis Tianshan Mountains
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Chemical Characteristics and Environmental Significance of Fresh Snow Deposition on Urumqi Glacier No.1 of Tianshan Mountains, China 被引量:5
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作者 LI Zhongqin LI Huilin +1 位作者 DONG Zhiwen ZHANG Mingjun 《Chinese Geographical Science》 SCIE CSCD 2010年第5期389-397,共9页
Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang... Ice and snow chemistry of alpine glaciers is crucial for the research of regional atmospheric environment change. Fresh snow samples were weekly collected from Urumqi Glacier No.1 in the Tianshan Mountains, Xin- jiang, China, and the chemical characteristics and seasonal variations of major ions, mineral dust, δ18O and trace metals were measured. Results show that the concentrations of major ions in the snow are Ca2+ > SO42-> NH4+ > NO3-> Cl-> Na+ > Mg2+ > K+, in which Ca2+ is the dominant cation, and SO42-is the dominant anion. All major ions have close positive correlations with each other except NO3-. δ18O shows positive correlation with air temperature change during the study period. Mineral dust particle and major ionic concentrations in fresh snow have obvious seasonal change, with high concentration in spring but low concentration in summer and autumn, which indicates that the chemical mass input from Asian dust activity to snow is very significant. Temporal changes of trace metals in fresh snow, e.g., Cd, Pb, Zn, Al, Fe, have shown that human-induced pollution of central Asian region also has large contribution to the snow chemistry on alpine glaciers of the Tianshan Mountains. 展开更多
关键词 Urumqi Glacier No. 1 fresh snow snow chemistry Tianshan Mountains
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