环境科学
高原(数学)
生态系统
生态系统呼吸
土壤碳
全球变暖
自行车
碳循环
陆地生态系统
降水
土壤呼吸
气候变化
生态学
土壤水分
初级生产
土壤科学
林业
地理
生物
数学
数学分析
气象学
作者
Ying Chen,Mengguang Han,Xia Yuan,Yanhui Hou,Wenkuan Qin,Huakun Zhou,Xinquan Zhao,Julia A. Klein,Biao Zhu
摘要
The alpine meadow ecosystem on the Qinghai-Tibetan Plateau (QTP) is very sensitive to warming and plays a key role in regulating global carbon (C) cycling. However, how warming affects the soil organic carbon (SOC) pool and related C inputs and outputs in alpine meadow ecosystems on the QTP remains unclear. Here, we combined two field experiments and a meta-analysis on field experiments to synthesize the responses of the SOC pool and related C cycling processes to warming in alpine meadow ecosystems on the QTP. We found that the SOC content of surface soil (0-10 cm) showed a minor response to warming, but plant respiration was accelerated by warming. In addition, the warming effect on SOC was not correlated with experimental and environmental variables, such as the method, magnitude and duration of warming, initial SOC content, mean annual temperature, and mean annual precipitation. We conclude that the surface SOC content is resistant to climate warming in alpine meadow ecosystems on the QTP.
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