[1]张 洁,蔡逸涛*,杨 强,等.基于CA-SVM模型的莆田市城市扩张特征[J].南京林业大学学报(自然科学版),2018,42(04):148-152.[doi:10.3969/j.issn.1000-2006.201706006]
 ZHANG Jie,CAI Yitao*,YANG Qiang,et al.Characteristic of urban expansion based on CA-SVM model[J].Journal of Nanjing Forestry University(Natural Science Edition),2018,42(04):148-152.[doi:10.3969/j.issn.1000-2006.201706006]
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基于CA-SVM模型的莆田市城市扩张特征
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
42
期数:
2018年04期
页码:
148-152
栏目:
研究论文
出版日期:
2018-07-12

文章信息/Info

Title:
Characteristic of urban expansion based on CA-SVM model
文章编号:
1000-2006(2018)04-0148-05
作者:
张 洁12蔡逸涛2*杨 强3何立恒3曹新晴4侯莉莉2周 墨2
1.中国地质大学地球科学学院,湖北 武汉 430074; 2.中国地质调查局南京地质调查中心,江苏 南京 210016; 3.南京林业大学土木工程学院,江苏 南京 210037; 4.中化地质矿山总局地质研究院,河北 涿州 072750
Author(s):
ZHANG Jie12 CAI Yitao2* YANG Qiang3 HE Liheng3 CAO Xinqing4 HOU Lili2 ZHOU Mo2
1. School of Earth Sciences, China University of Geosciences, Wuhan 430074, China; 2. Nanjing Center of Geological Survey, Nanjing 210016, China; 3. College of Civil Engineering, Nanjing Forestry University, Nanjing 210037, China; 4. China Chemical Geology and Mine Bureau Research Institute of Geological, Zhuozhou 072750, China
关键词:
CA-SVM模型 结构风险 距离间隔 空间变量 城市扩张
Keywords:
Keywords:CA-SVM model structural risk distance interval spatial variable urban expansion
分类号:
F291
DOI:
10.3969/j.issn.1000-2006.201706006
文献标志码:
A
摘要:
【目的】利用城市用地扩张模型分析城市用地系统特征、演变过程与机制。【方法】利用支持向量机的非线性特性来定义元胞自动机的非线性转换规则,计算出各个元胞与城市中心、商业中心、大小道路、地质地貌控制边界等距离的区域空间变量,并求出这些变量对每个元胞转变为城市概率的贡献,建立基于CA-SVM的城市扩张模拟模型,以揭示莆田市城市用地扩张规律。【结果】构建的CA-SVM模型在定义分类超平面的同时考虑最小化结构风险和最大距离间隔,使用该模型在莆田市城市扩张模拟中的逐点对比精度达到83%以上。莆田市城市用地扩张的主要方向为东北、东南和南部沿海地区,且呈现出沿交通主干道的轴向扩张模式,在港口和码头等沿海交通网络节点处形成城市扩张的跳跃式布局。【结论】构建的CA-SVM模型可定量地反映各空间要素在研究区城市格局所起的作用,继而完成分析城市发展的主要规律。
Abstract:
Abstract: 【Objective】The analysis of urban expansion simulations is an effective way to reveal the characteristics, mechanisms, and evolutionary processes of urban land use systems. 【Method】Nonlinear transformation rules defined by nonlinear classification of Support Vector Machine(SVM)for the Cellular Automata(CA)are used to calculate regional-spatial variables, such as the distance between cellular and the center of Putian City, business centers, different types of roads, and geological and geomorphological control boundaries. The contribution of these variables toward the transformation of each cellular to the urban development is then calculated. A CA-SVM-based urban expansion simulation model is established to reveal the trend of urban land expansion in Putian City. 【Result】The classification hyperplane in the SVM-CA model is defined considering the minimization of structural risk and maximum distance interval. Results indicate that the accuracy of the point-by-point comparison of this model to simulate the urban expansion is up to 83%. Urban expansion is mainly concentrated in the northeast, southeast, and southern coastal regions of Putian City. The city also exhibits a pattern of axial expansion along the main roads. A spatial salutatory layout can be seen at traffic network nodes along the coastal line, harbors and wharfs, etc. 【Conclusion】CA-SVM model can reflect quantitatively the role of each spatial element in the urban pattern of the study area, and further to analyze the major rule of city.

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备注/Memo

备注/Memo:
基金项目:中央地勘基金项目(DD20160321) 第一作者:张洁(zhangjienjcenter@163.com),高级工程师。*通信作者:蔡逸涛(ivan821129@163.com),助理研究员,博士。
更新日期/Last Update: 2018-07-27