青海省德令哈市城市建设用地扩展研究

发布时间：2018-03-06 00:00

本文选题：德令哈市　切入点：建设用地扩展　出处：《甘肃农业大学》2014年硕士论文　论文类型：学位论文

【摘要】：德令哈市是海西蒙古族藏族自治州首府，也是青海省除西宁市和格尔木市以外的第三大城市，在国家西部大开发战略中居于重要地位。德令哈市城市建设用地扩展研究，对海西蒙古族藏族自治州乃至整个西部地区城市发展具有重要的参考意义。本研究首先借助RS和GIS技术，对德令哈市1989年TM、1999年和2011年ETM遥感影像数据进行分析处理，采用人机交互目视解译法提取德令哈市建成区边界图，并将3个时期的建成区范围图叠加；然后从城市扩展强度、重心坐标转移、紧凑度指数、分形维数指数以及城市扩展弹性系数等角度对德令哈市建成区的空间扩展状况进行分析；结果显示：1989-1999年和1999-2011年这2个阶段，，德令哈市建成区的面积都在增加，但是1999-2011年，建成区面积的扩展速度和强度都大于1989-1999年；建成区重心坐标第一阶段向西北方向偏移，第二阶段向南偏移，紧凑度指数偏小，并逐渐减小，分形维数指数比合理值1.12大很多，城市空间演变形态趋于复杂；城市扩展弹性系数偏大，并有上升趋势，城市人口增加与城区面积扩展不协调。然后，从自然地理因素、社会经济因素、交通因素和政策因素角度对德令哈市城市建设用地扩展进行剖析。地形地貌、气候地质和水资源等自然地理因素，是城市建设用地扩展的基础条件；城市人口增长、社会经济发展、交通设施条件和重要的政策定位等是德令哈市城市建设用地扩展的重要驱动因子。自然地理因素很大程度上决定了德令哈市城市扩展的主体方向，城市建设应控制向北发展，总体向南发展，适度向东、西部扩展；社会经济因素直接影响城市扩展的潜力、方向、速度、模式以及空间结构。最后，用近十年的社会经济环境数据为样本，建立了多元线性回归模型、灰色系统GM（1,1）预测模型和趋势外推模型，对德令哈市2020年的城市建设用地规模进行了预测，以期为德令哈市未来的发展规划提供借鉴作用。
[Abstract]:Delingha is the capital of Hercynian Mongolian Tibetan Autonomous Prefecture, and the third largest city in Qinghai Province, besides Xining and Golmud, and plays an important role in the strategy of national western development. It has important reference significance for the urban development of Hexi Mongolian Tibetan Autonomous Prefecture and the whole western region. In this study, the remote sensing data of ETM on 1989, 1999 and 2011 in Delingha were analyzed and processed by means of RS and GIS techniques. The boundary map of the built area of Delingha was extracted by human-computer interactive visual interpretation. The area map of the three periods is superimposed, and then the intensity of urban expansion, the coordinate of gravity center, the index of compactness are transferred. The fractal dimension index and the elasticity coefficient of urban expansion are used to analyze the spatial expansion of the built-up areas in Delingha. The results show that the area of the built-up areas in Delingha is increasing in the two stages of the period from 1989 to 1999 and from 1999 to 2011, but from 1999 to 2011, The expansion speed and intensity of the built-up area are both higher than that of 1989-1999. In the first stage of the gravity center coordinate of the built area, the direction of the center of gravity is shifted northwestward, the second stage moves southward, the compactness index is smaller and gradually decreases, and the fractal dimension index is much larger than the reasonable value of 1.12. The evolvement of urban space tends to be complicated, the elasticity coefficient of urban expansion is on the large side, and there is a rising trend, and the increase of urban population is not in harmony with the expansion of urban area. Then, from the perspective of natural geography, social and economic factors, traffic factors and policy factors, the paper analyzes the expansion of urban construction land in Delingha. The physical and geographical factors, such as topography, climate geology and water resources, are analyzed. Is the basic condition for urban construction land expansion; urban population growth, social and economic development, Transportation facilities and important policy orientation are the important driving factors of urban construction land expansion in Delingha. Natural geographical factors largely determine the main direction of urban expansion in Delingha, and urban construction should be controlled northward. The social and economic factors directly affect the potential, direction, speed, pattern and spatial structure of urban expansion. Finally, using the social economic environment data of nearly ten years as the sample, the multivariate linear regression model, the grey system GM1 / 1) prediction model and the trend extrapolation model are established to predict the scale of urban construction land in Delingha in 2020. In order to provide reference for the future development planning of Delingha.
【学位授予单位】：甘肃农业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：F299.23

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