| 摘要: |
| 在中国大力发展中小城市、推进均衡城镇化的背景下，准确研判县级市城市绿地建设水平差异特征，有利于探寻县级市绿地建设的问题根源和调控对策。以建制市为样本单元，以建成区绿地率表征城市绿地建设水平，以1996—2015年为研究时段，基于空间分析和数理统计方法，揭示中国县级市建成区绿地率时空分异特征。实证表明：1）县级市建成区绿地率起点低，呈现平稳上升趋势，增速呈逐渐降低态势，研究周期内均低于全国均值和其他行政等级城市；2）县级市市域间的建成区绿地率呈现逐步接近的趋势，相对差异率快速下降，但绝对差异率下降缓慢且仍保持在较高水平；3）县级市市域建成区绿地率呈现出“东部>中部>西部>东北”的空间分布格局，且区域差异相对稳定；中部县级市建成区绿地率的增速及增幅均处于领先地位，东北部在上述两方面均较为落后。厘清近20年中国县级市建成区绿地率时空分异特征，以期为科学制定县级市城市绿地建设政策提供理论依据。 |
| 关键词: 风景园林 建成区绿地率 县级市 时空分异 中国 |
| DOI： |
| 分类号:TU986 |
| 基金项目:国家自然科学基金（编号51778389）；苏州科技大学“风景园林学”江苏省重点（培育）学科；江苏省2016年度普通高校研究生科研创新计划项目（编号KYLX16_1361） |
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| Spatio-temporal Differentiation Characteristics of Green Rate of Built District of County-level Cities in China |
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LIU Zhiqiang, LIN Cunhui, WANG Jundi, HONG Genwei
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Suzhou University of Science and Technology
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| Abstract: |
| Under the background of vigorously developing small and medium-sized cities and promoting balanced urbanization, an accurate analysis of the difference of urban green construction in county-level cities will contribute to the exploration of the problems and countermeasures of urban green development. This paper takes the municipal administrative areas as the sample unit, uses green rate of built district to characterize urban green construction, adopts spatial analysis and mathematical method to reveal the spatio-temporal variation characteristics of green rate of built district of county-level cities from 1996 to 2015. The result shows: 1) Compared with other administrative cities, county-level cities are the lowest level from early stage to the present. The green rate of built district rises steadily, but the growth rate decreases gradually. 2) The relative difference between county-level cities decreases rapidly, but the absolute difference decreases slowly and remains at a high level. 3)Green rate of built district presents the spatial distribution pattern of “East > Central> West > Northeast”, and the spatial variation is relatively stable. The central part is growing faster, while the northeast is backward. This paper clarifies the spatio-temporal variation characteristics of green rate of built district of county-level cities in China in the past 20 years, to provide a theoretical basis for the urban green space construction of county-level cities. |
| Key words: landscape architecture green rate of built district county-level city spatio-temporal differentiation China |
| 引用本文: | 刘志强,林存晖,王俊帝,洪亘伟.中国县级市建成区绿地率时空分异特征研究[J].风景园林，2018，25（11）：90-95. |
| LIU Zhiqiang,LIN Cunhui,WANG Jundi,HONG Genwei.Spatio-temporal Differentiation Characteristics of Green Rate of Built District of County-level Cities in China[J].Landscape Architecture Journal, 2018, 25(11):90-95. |
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