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了解植物现象学对中国中高度地区容易忽视的气候因素的反应
Qianfeng Wang1,2, Huixia Chen3, Feng Xu3
1College of Environmental and Safety Engineering/The Academy of Digital China (Fujian), Fuzhou University, Fuzhou, 350116, China. wangqianfeng@fzu.edu.cn.
Scientific reports
|April 16, 2024
概括
湿度和辐射等气候因素显著影响植被现象学,影响生长季节的开始 (SOS) 和结束 (EOS). 温度强烈影响森林现象学,而湿度主导着草原现象学.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 植物生长的动力学
背景情况:
- 以前关于植被现象学的研究主要集中在温度和降水.
- 经常被忽视的气候因素对植被现象学的影响仍然不够理解.
研究的目的:
- 研究季前气候因素对植被现象学的影响,特别是生长季的开始 (SOS) 和结束 (EOS).
- 分析各种植被类型对相对湿度 (RH),短波辐射 (SR) 和温度 (Tmax,Tmin) 等因素的差异反应.
主要方法:
- 从1982年至2014年,分析了来自中国北部 (30°N以上) 的植被现象学数据.
- 检查植物现象学 (SOS和EOS) 与季前气候因素 (RH,SR,Tmax,Tmin) 在0-60天窗口内的相关性.
主要成果:
- 在40%以上的研究区域中,SOS与最高温度 (Tmax) 和最低温度 (Tmin) 有显著的负相关性.
- 在近50%的区域,EOS与短波辐射 (SR) 有显著的负相关性.
- 相对湿度 (RH) 是草原 (SA) 现象学的主要驱动因素,而温度则强烈影响了树叶叶森林 (DNF) 和树叶叶森林 (DBF) 的SOS.
结论:
- 植物现象学受到温度和降水以外的一系列气候因素的显著影响.
- 不同的植被类型对特定的气候驱动因素表现出不同的敏感性,影响它们的生长季节时间.
- 调查结果为在气候变化情景下制定有针对性的植被适应战略提供了关键数据.
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