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台风多克苏里对亚热带森林土壤呼吸的影响
Jia-Yu Song1,2, Xiang-Biao Chen1,2, Shi-Dong Chen1,2
1School of Geographical Sciences/School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350117, China.
概括
台风Doksuri在一个变暖的森林中减少了土壤呼吸. 这种极端天气事件影响了土壤呼吸量,弹性和日常动态,突出显示了全球变暖的影响.
科学领域:
- 生态生态学 生态生态学
- 气候科学 气候科学
- 林业林业 林业 林业 林业
背景情况:
- 台风可以改变森林结构和土壤呼吸.
- 在全球变暖下,台风对土壤呼吸的影响数据有限.
- 台风的强度和频率不断增加,需要了解这些影响.
研究的目的:
- 调查台风事件和土壤变暖对土壤呼吸的综合影响.
- 在气候变暖条件下分析土壤呼吸幅度,弹性和台风后动态的变化.
主要方法:
- 使用高时间分辨率的自动监测系统来测量土壤呼吸和环境因素.
- 在自然台风事件 (台风Doksuri) 的同时实施了土壤变暖处理 (+4°C).
- 对比了控制中的土壤呼吸和在亚热带宽叶常青森林中的温暖地块.
主要成果:
- 台风Doksuri在升温处理中降低了25.7%的土壤呼吸,但在对照中没有.
- 在热处理中,土壤呼吸在台风后下降了22.5%,并没有恢复.
- 台风多克苏里增加了土壤呼吸的温度敏感性,并在加热处理中改变了其日常动态.
结论:
- 台风显著影响土壤呼吸量和森林变暖的弹性.
- 极端天气和变暖的联合影响改变了土壤呼吸动态和温度敏感性.
- 这些发现对于预测森林生态系统对气候变化和极端事件的反应至关重要.
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