利用高分辨率卫星图像评估南加州荒野城市界面的建筑层面树木覆盖变化
1College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, Gansu, 730000, China.
Journal of environmental management
|March 31, 2025
概括
野生土地与城市接口 (WUI) 地区的野火风险正在上升. 南加州大多数建筑物周围的树木覆盖增加,特别是在密集的住房和新建筑附近,突出了植被管理的需求.
科学领域:
- 环境科学 环境科学
- 城市规划 城市规划
- 遥感 遥感 遥感 遥感
背景情况:
- 由于气候变化和发展,野火风险在野地-城市接口 (WUI) 地区升级.
- 建筑物靠近树木覆盖有很大影响野火点火和蔓延.
- 了解建筑物周围树木覆盖的动态对于降低风险至关重要.
研究的目的:
- 分析2010-2022年南加州WUI建筑物周围树木覆盖的变化.
- 为了研究树木覆盖的变化如何因建筑类型和空间布局而有所不同.
- 评估新建筑对现有树木覆盖模式的影响.
主要方法:
- 将高分辨率国家农业图像计划 (NAIP) 图像与微软建筑足迹相结合.
- 分析建筑物周围10米缓冲区内的树木覆盖变化.
- 根据空间布局和接近新开发的建筑物对建筑物进行分类.
主要成果:
- 69%的建筑物在10米缓冲区内树木覆盖率增加,平均为5.69%.
- 密集集群的建筑物显示了最高的树木覆盖率增加.
- 靠近新建筑的老建筑物比与新开发隔离的建筑物相比,树木覆盖面的增加更大.
结论:
- 在WUI地区建筑物周围增加的树木覆盖需要全面的植被管理策略.
- 新的发展政策必须考虑建筑对周围树木覆盖和野火风险的影响.
- 全社区的方法至关重要,以防止结构到结构的野火蔓延.
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