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| Correlation analysis of seasonal variation characteristics of Qiyi glacier gradient factors with soil respiration in Qilian Mountains |
| Received:November 16, 2021 |
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| KeyWord:Qiyi glacier;soil respiration;photosynthetically active radiation;atmospheric temperature;vapor concentration |
| Author Name | Affiliation | E-mail | | LI Yuanhong | National Nature Reserve Management and Conservation Center of Qilian Mountain in Gansu Province(Giant Panda Qilian Mountain National Park Gansu Bureau Zhangye Branch), Zhangye 734000, China | | | ZHAO Xin | Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China | | | YUAN Xinjie | Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China | | | CAI Yiwei | Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China | | | LI Guiying | Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China | ligy1999@gdut.edu.cn | | AN Taicheng | Guangdong-Hong Kong-Macao Joint Laboratory for Contaminants Exposure and Health, Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control, School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou 510006, China | |
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| Abstract: |
| To measure the effects of gradients and factors on soil respiration intensity on the surface of glaciers in the four seasons, this study used real-time observation data from the Qiyi Glacier Observation Station from September 2020 to June 2021 to analyze photosynthetically active radiation, air temperature, soil respiration carbon dioxide concentration, and other factors at 5, 10, 15, 20 m, and 25 m above the observation station in March, June, September, and December. The soil respiration intensity was characterized by the soil respiration carbon dioxide concentration and soil respiration water vapor concentration, and the variation law and influencing factors of soil respiration intensity on the surface of glaciers were obtained. The results showed that the soil respiration carbon dioxide concentration in winter was stable at 441.3 μmol·mol-1, which was at a high level in the four seasons, and the soil respiration water vapor concentration was stable at 0.479 mmol·mol-1, which was at a low level in the four seasons. Soil respiration intensity positively correlated with the atmospheric temperature of each gradient, positively correlated with the photosynthetically active radiation value of each gradient at noon, and negatively correlated in the morning and evening. A positive correlation between soil respiration intensity and atmospheric temperature of each gradient in spring and autumn, and the relationship between soil respiration intensity and photosynthetically active radiation of each gradient also varied with time. In addition, due to the temperature inversion phenomenon, snow melting and solar radiation in spring and autumn, the average air temperature was the highest at 10 m and the lowest at 25 m at the observation point. The correlation analysis between the changes of each gradient factor in four seasons and soil respiration intensity showed that there was a certain scientific relationship between Qilian Mountain glaciers and surface soil respiration. |
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