Advances in the Temperature Sensitivity of Soil Respiration and Carbon Balance

Global warming has led to a positive feedback loop between global carbon cycle and climate system, which will help answer regional climate change and global carbon balance. The sensitivity of soil respiration to temperature change (Q 10 ) is a very important parameter in the regulation of regional and global carbon balance. Soil respiration increases with the increase of temperature, global warming is believed to stimulate soil respiration, and thus reduce the carbon sequestration intensity of terrestrial ecosystems. However, if soil respiration is not sensitive to long-term changes in temperature, when the temperature rises and the concentration of CO 2 increases, the deposition of carbon will be more effective. At present, there are few studies on the role of desert ecosystem in arid area, which is the area of 1/4 of China, and the temperature sensitivity of soil respiration in arid region is generally lower than that of other regions. Comprehensive analysis of domestic and international studies on soil respiration and its temperature sensitivity, and the carbon balance of soil respiration and arid area, is helpful for us to understand the carbon cycle of desert ecosystem and its response to climate change.