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一项关于城市公园每月FVC空间分布和动态变化的研究
Yichuan Zhang1,2, Yanan Ge1, Lifang Qiao1
1School of Horticulture and Landscape Architecture, Henan Institute of Science and Technology, Xinxiang, China.
PloS one
|August 23, 2024
概括
这项研究使用无人机图像分析了城市公园的每月部分植被覆盖面 (FVC),揭示了季节性变化和空间模式. 结果指导植被管理,为更健康的城市绿地提供指导.
科学领域:
- 城市生态学 城市生态学
- 遥感是一种远程传感.
- 地理信息系统 (GIS) 是指地理信息系统.
背景情况:
- 城市公园对于城市生态系统和人类福祉至关重要.
- 了解植被动态是有效的城市绿地管理的关键.
- 以前的研究往往缺乏对公园植被覆盖面的详细月度分析.
研究的目的:
- 分析两个城市公园的每月部分植被覆盖面 (FVC) 的空间分布和时间动态.
- 为优化城市公园植被管理策略提供科学基础.
- 用无人机 (UAV) 数据评估区域和像素尺度上的FVC变化.
主要方法:
- 利用多光谱无人机图像进行每月的部分植被覆盖 (FVC) 估计.
- 采用了基于规范差异植被指数 (NDVI) 的二度像素模型.
- 使用区域平均值,面积变化,变化系数,标准偏差和像素尺度差异方法分析了FVC动态.
主要成果:
- FVC展示了不同的空间模式,在公园外围覆盖率更高,在中心覆盖率更低.
- 季节性FVC变化遵循了整体""形的模式,在夏季达到顶峰 (人民公园的8月,和公园的6月).
- 像素尺度分析显示,FVC从2月到8月有所改善,从1月到2月和8月到12月有所恶化,强度和位置各不相同.
结论:
- 城市公园的植被覆盖季节性波动,具有明显的空间分布.
- 管理策略应该平衡生态和娱乐功能,控制赤裸的土地,并增强植被结构.
- 建议包括增加常青植物,优化种植密度,减轻洪水等环境影响.
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