描述城市形状因子对运输碳排放的非线性影响,基于梯度增强决策树
1College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, China.
The Science of the total environment
|April 22, 2024
概括
城市形式对交通运输的碳排放产生重大影响,诸如多中心性等特定因素显示出非线性效应和明确的值. 了解这些非线性关系是可持续城市规划的关键.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 运输 地理 交通 地理
背景情况:
- 关于城市形式和交通碳排放的先前研究往往忽略了非线性关系.
- 了解这些非线性对于有效的环境政策和城市发展至关重要.
研究的目的:
- 调查城市形式对交通碳排放的非线性影响.
- 确定影响排放的城市形状变量值范围.
- 量化城市形式因素的相对重要性.
主要方法:
- 利用梯度增强决策树进行分析.
- 采样了中国282个县级城市.
- 对交通设施,社会经济和人口统计因素进行控制.
主要成果:
- 城市形式因素解释了运输碳排放变化的31.32%.
- 多中心性,城市分散性, (子) 中心数量和人口密度表现出显著的非线性效应和值影响.
- 在城市多中心性和交通碳排放之间确定了复杂的非线性关系.
结论:
- 城市形式通过非线性机制在运输碳排放中发挥着重要作用.
- 确定城市形式变量的有效范围可以指导可持续的土地利用和发展规划.
- 该研究提供了一种新的方法来量化和理解这些复杂的城市环境相互作用.
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