Qin Shu-Qi, Peng Qin, Dong Yun-She, Qi Yu-Chun
Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China.
Ying Yong Sheng Tai Xue Bao. 2022 Apr;33(4):1145-1152. doi: 10.13287/j.1001-9332.202204.015.
Soil respiration (), as a key process of carbon cycle in terrestrial ecosystems, has a direct impact on atmospheric CO concentration. How responds to global change factors, such as rainfall changes and increased N deposition, has become a hot and difficult issue in the field of global change. Compared with the responses of to the single factor of rainfall changes or increased N deposition, studying the response of to the interaction of these two factors is more in line with natural environment, which can predict the future changes of soil carbon emission more accurately. At present, the related researches focused on different terrestrial ecosystems all over the world, and revealed the response mechanism from three aspects: soil, microorganism, and plant. Here, the research progress of soil respiration in response to the interaction of rainfall changes and increased N deposition in different terrestrial ecosystems was reviewed from the aspects of and its components, factors related with soil properties, microorganisms and plant, and the deficiencies of current researches, and the research direction to be strengthened in the future were pointed out. Our review would provide a reference for further understanding the response law and the mechanism of soil respiration to the interaction between rainfall changes and increased N deposition.
土壤呼吸作为陆地生态系统碳循环的关键过程，对大气中二氧化碳浓度有直接影响。土壤呼吸如何响应全球变化因素，如降雨变化和氮沉降增加，已成为全球变化领域的一个热点和难点问题。与土壤呼吸对降雨变化或氮沉降增加单一因素的响应相比，研究其对这两个因素相互作用的响应更符合自然环境，能更准确地预测土壤碳排放的未来变化。目前，相关研究聚焦于全球不同的陆地生态系统，从土壤、微生物和植物三个方面揭示了响应机制。在此，从土壤呼吸及其组分、与土壤性质、微生物和植物相关的因素以及当前研究的不足等方面，综述了不同陆地生态系统中土壤呼吸对降雨变化和氮沉降增加相互作用的研究进展，并指出了未来需加强的研究方向。我们的综述将为进一步理解土壤呼吸对降雨变化和氮沉降增加相互作用的响应规律及机制提供参考。
