Chen Ren-sheng, Kang Er-si, Ji Xi-bin, Yang Jian-ping, Zhang Zhi-hui, Yang Yong
Laboratory of Watershed Hydrology and Ecology, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou.
J Environ Sci (China). 2006;18(4):708-15.
Atmospheric CO2 concentration (CC) near land surface and meteorological variables have been measured at four sites, named Yeniugou (alpine meadow and permafrost), Xishui (mountainous forest), Linze (oasis edge) and Ejina (lower desert), respectively, in Heihe River Basin, northwest China. The results showed that, the half hourly CC at night was larger than in daytime, and the daily averaged CC was the largest in winter. The averaged CC of 932 d at the Linze was about 418 ppm, was about 366 ppm in the 762 d at the Ejina. In the same period from September 23 to November 9, 2004, the averaged CC was about 625, 334, 436 and 353 ppm, at Yeniugou, Xishui, Linze and Ejina, respectively. The linear relationship between daily averaged CC and air temperature T was negative, between CC and relative humidity (RH) was positive. The linear CC-atmospheric pressure (AP) relationship was negative at the Linze and Yeniugou, was positive at the Ejina. The relationship between CC and global radiation R was exponent, and soil temperature Ts was negative linear, and soil water content was complex. The correlation between CC and wind speed was not existent. Using meteorological variables together to simulate CC, could give good results.
在中国西北黑河流域的四个地点，即野牛沟（高山草甸和永久冻土区）、西水（山地森林）、临泽（绿洲边缘）和额济纳（低地沙漠），分别测量了近地表大气二氧化碳浓度（CC）和气象变量。结果表明，夜间半小时CC大于白天，日平均CC在冬季最大。临泽932天的平均CC约为418 ppm，额济纳762天的平均CC约为366 ppm。在2004年9月23日至11月9日的同一时期，野牛沟、西水、临泽和额济纳的平均CC分别约为625、334、436和353 ppm。日平均CC与气温T呈负线性关系，与相对湿度（RH）呈正线性关系。临泽和野牛沟CC与大气压力（AP）呈负线性关系，额济纳呈正线性关系。CC与全球辐射R呈指数关系，与土壤温度Ts呈负线性关系，与土壤含水量关系复杂。CC与风速之间不存在相关性。使用气象变量共同模拟CC，可得到较好结果。
