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城市化对中国典型城市地区植被功能多样性的影响
Xuan Cui1, Tong Sun1, Xuehe Lu2
1School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou, 215000, China.
Journal of environmental management
|June 7, 2025
概括
城市化显著减少了植被的功能多样性,城市核心显示了76.9%的减少. 遥感有效监测这些变化,揭示了土地表面温度和城市绿化作为影响多样性的关键因素. 城市绿化对于增强城市的多样性至关重要.
科学领域:
- 城市生态城市生态学
- 遥感 遥感 遥感 遥感
- 环境科学 环境科学
背景情况:
- 城市植被的多样性对生态安全至关重要,但由于快速城市化而受到威胁.
- 缺乏有效的区域范围的监测方法,用于对城市植被多样性的定量评估.
- 了解城市化对植被功能多样性的直接和间接影响对于城市规划至关重要.
研究的目的:
- 评估城市化对植被功能多样性的直接和间接影响,在中国苏州使用遥感.
- 评估基于遥感的罗氏Q指数对监测城市植被功能多样性的有效性.
- 在城市化下,确定影响植被功能多样性的关键因素.
主要方法:
- 利用基于遥感的罗氏Q指数来量化植被功能多样性.
- 分析了城市化强度 (β) 对罗的Q的直接和间接影响.
- 采用部分相关性分析来识别影响因素,如土地表面温度 (LST) 和城市绿化 (UG).
主要成果:
- 修改后的罗氏Q指数有效地捕获了城市植被功能多样性的空间模式.
- 与郊区相比,城市核心的功能多样性减少了76.9%.
- 直接的城市化影响减少了多样性,而间接的影响显示了值行为,促进了低于β=0.2的多样性,阻碍了以上的多样性.
- LST和UG是影响间接影响的关键因素,UG对高度城市化地区至关重要.
结论:
- 城市化显著减少了植被的功能多样性,需要有针对性的保护策略.
- 遥感为监测区域范围内的城市植被功能多样性提供了一个可行的工具.
- 城市绿化和土地表面温度的管理对于减轻多样性丧失和增强城市生态系统服务至关重要.
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