| 基于G2SFCA的兰州主城区公园绿地可达性分析 |
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| 引用本文： | 李鲁华,石惠春,刘冉芝.基于G2SFCA的兰州主城区公园绿地可达性分析[J].中国农学通报,2019,35(7):90-96. |
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| 作者姓名： | 李鲁华 石惠春 刘冉芝 |
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| 作者单位： | 西北师范大学地理与环境科学学院 |
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| 基金项目： | 国家自然科学基金项目(41161022)；甘肃省科技支撑计划项目(090NKCA075)。 |
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| 摘 要： | 为了探究兰州市主城区公园绿地分布格局的合理性，本研究借助ArcGIS 平台，采用格网化的高斯两步移动搜索法，分别从供给点和需求点2 个角度对兰州市主城区公园绿地可达性进行分析。结果表明：兰州市主城区公园绿地数量不足且面积较小，空间分布非常不均匀，大部分集中于城关区的黄河两岸，而七里河区、安宁区沙井驿街道、西固区柳泉乡和西柳沟街道、城关区东岗街道公园绿地匮乏。总体来看，当搜索阈值为30 min 时，公园绿地的服务面积可覆盖大部分街道，但15 min 可达性整体较差。分析人口密度与可达性之间的关系发现，多数居民居住于可达性较低的街道，公园绿地的服务总量与人口密度不协调
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| 关 键 词： | 羊草草原 羊草草原 产量 “3414”试验方案 NPK肥 |
| 收稿时间： | 2018-05-15 |
Park Green Space in Main Urban Area of Lanzhou: Accessibility Analysis Based on G2SFCA |
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| Abstract: | To explore the rationality of the distribution pattern of park green space in the main urban area of Lanzhou, based on ArcGIS, we analyzed the accessibility of park green space in main urban areas of Lanzhou from the supply point and demand point by using Gaussian two-step floating catchment area method. The results showed that: the number of park green space in main urban area of Lanzhou was insufficient and the area was very small, the spatial distribution was quite uneven, most of the parks focused on both sides of the Yellow River in Chengguan, and green parks were deficient in Qilihe District, Shajingyi Street in Anning District, Liuquan and Xiliugou in Xigu District, Donggang Street ind Chengguan District. Overall, in 30 minutes, the service area of green space could cover most streets, but the accessibility was poor in 15 minutes. By analyzing the relationship between population density and accessibility, it is found that most of the residents live in the streets with low accessibility, and the total service quantity of the green space is inconsistent with the population density. |
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