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森林年龄变化对中国陆地表面温度的生物物理影响
Zhijiang Zhang1, Lunche Wang2, Chao Chen1
1School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Suzhou Key Laboratory of Spatial Information Intelligent Technology and Application, Suzhou University of Science and Technology, Suzhou 215009, China.
The Science of the total environment
|January 24, 2025
概括
较老的森林提供了显著的冷却效益,缓解了当地气候变化. 这项研究揭示了森林年龄如何通过生物物理过程影响土地表面温度,为气候适应战略提供了见解.
科学领域:
- 环境科学 环境科学
- 气候科学 气候科学
- 森林生态 森林生态
背景情况:
- 森林的年龄结构因干扰和人类活动而改变,通过生物地球化学和生物物理过程影响气候.
- 研究主要集中在生物地化学效应上,对森林年龄对气候的生物物理影响的关注较少.
研究的目的:
- 调查森林年龄对中国陆地表面温度的影响.
- 确定驱动森林年龄和LST之间的关系的潜在生物物理机制.
主要方法:
- 从2003年到2012年利用了对中国的卫星观测.
- 较古老的森林和相邻的年轻森林像素之间的LST比较.
- 进行了归因分析,以确定LST变化的驱动因素.
主要成果:
- 与较年轻的森林相比,较老的森林表现出相当大的年度降温效应.
- 在常青森林中,潜热流的冷却效应抵消了白度诱导的变暖.
- 在落叶森林中,感知热流的冷却效应超过了白度驱动的变暖.
结论:
- 保护成熟的森林是一个可行的当地气候适应战略.
- 这些发现为缺乏森林年龄模块的地球系统模型提供了关键的参数化数据.
- 森林年龄通过不同的生物物理路径显著影响土地表面温度.
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