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城市扩张推动了城市植被生产力的损失和补偿
Xinyue Liu1, Tianshan Zha1, Charles P-A Bourque2
1State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Beijing 100083, China; School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; Beijing Engineering Research Center of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China.
Journal of environmental sciences (China)
|November 2, 2025
概括
城市化对植被生产力产生双重影响,直接造成损失,但通过环境变化间接获得收益. 空间适应性管理对于减轻负面影响和利用增长中的城市的好处至关重要.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 遥感 遥感 遥感 遥感
背景情况:
- 城市化通过直接和间接的影响显著影响植被生产力.
- 直接影响源于植被面积的变化 (例如,无透表面强度 - ISI).
- 间接影响来自于改变的城市环境因素,如温度,降水,城市热岛 (UHI) 强度和人口密度 (POP).
研究的目的:
- 量化直接 (ωd) 和间接 (ωi) 城市化影响对植被净初级生产率 (NPP) 的贡献.
- 分析城市扩张的时空变化及其对中国北京核电站的影响.
- 了解城市化对核电站影响的空间变化.
主要方法:
- 从1990年到2020年利用多源远程传感数据.
- 分析了核电站的城市扩张速度和时空变化.
- 使用环境变量 (ISI,空气温度,降水,UHI,POP) 对核电厂的量化直接 (ωd) 和间接 (ωi) 影响.
主要成果:
- 北京从1990年到2020年经历了显著的城市扩张 (58.9公里2/年).
- 由 ωd 造成的年平均 NPP 损失为 77.1 g C/(m2·yr),而 ωi 导致 28.9 g C/(m2·yr) 的收益.
- 核电厂的损失部分被收益 (18.6%-69.3%) 抵消. 空气温度,降水,UHI,POP和ISI解释了核电站的显著空间变化.
结论:
- 城市化对植被生产力有着复杂的双重影响.
- 空气温度和降水等环境因素起着至关重要的作用,温度的影响受到湿度的适应.
- 适应空间的生态管理策略对于快速城市化地区至关重要.
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