|
|
Variation characteristics of atmospheric CO2 concentration of surface layer over the hinterland of Taklimakan Desert in winter |
|
|
Abstract By using Li-8150 automated soil CO2 flux system and gradient tower system over the hinterland of Taklimakan Desert, this paper collected surface layer atmospheric CO2 profiles data and meteorological data in winter, which analyzed the variation characteristics of surface layer atmospheric CO2 concentration. The results showed that variation of surface layer CO2 concentration took on single peak curve and the mean CO2 concentration of daytime was higher than night; The daily variation of CO2 concentration ranged from 371.6μmol/mol to 387.1μmol/mol; The surface layer CO2 concentration had good response to soil respiration and also showed significant positive correlation with air temperature; The wind speed was notable to CO2 concentration at 1m above surface layer, but relatively not at 0.5m level above surface layer; CO2 concentration were jointly controlled by soil respiration and weak meteorological conditions over the hinterland of Taklimakan Desert.
|
Received: 08 October 2014
|
|
|
|
[1] |
MAI Bo-Ru, AN Xing-Qin, DENG Xue-Jiao, ZHOU Ling-Xi, WANG Chun-Lin, LI Fei, HUANG Jian-Ping, CHEN Ling, YIN Shu-Xian. Simulation analysis and verification of surface CO2 flux over Pearl River Delta, China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2014, 34(8): 1960-1971. |
|
|
|
|