| 重庆市主城区1986-2007年用地时空演化特征分析 |
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| 引用本文： | 彭月,何丙辉.重庆市主城区1986-2007年用地时空演化特征分析[J].地球信息科学,2012,14(5):635-643. |
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| 作者姓名： | 彭月 何丙辉 |
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| 作者单位： | [1]西南大学资源环境学院,重庆400715 [2]重庆市林业科学研究院,重庆400036 [3]西南大学农业资源利用博士后科研流动站,重庆400715 |
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| 基金项目： | 国家林业公益专项（201004039）; 重庆市科委基本业务专项（BB1002）; 西南大学博士后启动基金（207178）; 中央财政林业科技推广项目资助（AB1101） |
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| 摘 要： | 本文以重庆市主城区为例,通过GIS构建城市用地变化模型对重庆市城市用地20年来的时空演变规律进行了分析,分别对其城市用地利用程度、城市用地多样性和城市用地重心变化进行了评价,并考虑入口和海拔因素,讨论了重庆市城市用地发展的主要特点.结果表明;(1)重庆市主城区城市用地中耕地面积最多,其次是林地,城市景观所占比例较轻.2...
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| 关 键 词： | 城市用地 时空演化 重庆市 主城区 |
| 收稿时间： | 2012-06-07; |
The Spatio-Temporal Change of Land Use in the Main City Zone of Chongqing |
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| PENG Yue and HE Binghui.The Spatio-Temporal Change of Land Use in the Main City Zone of Chongqing[J].Geo-information Science,2012,14(5):635-643. |
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| Authors: | PENG Yue and HE Binghui |
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| Institution: | PENG Yue and HE Binghui (1. School of Resources and Environment Science, Southwest China University, Chongqing 400715, China; 2. Chongqing Academy of Forestry Science, Chongqing 400036, China; 3. The Post-doctorate Research Station of Agricultural Resources Utilization, Southwest China University, Chongqing 400715, China) |
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| Abstract: | Based on GIS, we analyzed the urban land use change of Chongqing main city zone from 1986 to 2007, and evaluated the urban land use degrees, land use diversity and the transfer of urban land use cores. At last, we analyzed the driving factor of the urban land use from population and elevation. The re- sults showed： （1） the cultivated land and the wood land were more than the other land types, showing a low ratio of urban landscape. From 2000 to 2007, it had the fastest speed of the land variation, the culti vated land increased firstly and then decreased, the wood land decreased firstly and then increased, the water body, construction land and grass land were kept increasing. （2） The result of land transfer corre sponded to human activities in some degrees, i.e. from 1986 to 1995, there were some agricultural activi- ties （damage of wood land and grass land for cultivated land）, and the urban expansion was very slow; from 1995 to 2000, these destroy activities were reduced, and the urban expansion was speeded up; from 2000 to 2007, urban expansion was very rapid. At the same time, there were some complex disturbances by humans： the urbanization was intense, the Three Gorges Project affected regional land impoundment obviously, and some lower lands were submerged. The effect of ＂Green for Grain＂ is remarkable. （3） From 1986 to 2007, the shift of cultivated land core and wood land core was opposite and the two cores were closely related. The core of future urban construction land would be in the ＂New District along the Two Rivers＂ in the north of the city. The degree of urban land use will increase gradually, especially in the northern part. The diversification of land use types increased gradually, too, with a pattern of lower in the east and higher in the west, and it was strongly impacted by the construction land changes. （4） The population and the altitude are closely related to the urban land use change. Urban population increased sharply, leading to the diversification in the degree and structure of urban land use. In the main city zone of Chongqing, topography is the primary impact factor. Construction land was located in the lower belts and plain regions, making a scattered distribution of urban cores which is different from Beijing, Shanghai and other big cities. |
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| Keywords: | urban land use spatio-temporal change Chongqing City main city zone |
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