阴天和晴天对黄河三角洲芦苇湿地净生态系统CO2交换的影响

初小静, 韩广轩, 邢庆会, 于君宝, 吴立新, 刘海防, 王光美, 毛培利

Net ecosystem exchange of CO2 on sunny and cloudy days over a reed wetland in the Yellow River Delta, China

CHU Xiao-Jing,HAN Guang-Xuan,XING Qing-Hui,YU Jun-Bao,WU Li-Xin,LIU Hai-Fang,WANG Guang-Mei,MAO Pei-Li

表2 多元回归分析黄河三角洲湿地生长季阴天和晴天光合有效辐射(PAR)与气温(T)对净生态系统CO2交换(NEE), 阴天和晴天PAR差量(ΔPAR)与T差值(ΔT)对NEE差量(ΔNEE)的协同影响

Table 2 Estimated empirical coefficient of multiple liner regression models for changes in net ecosystem exchange (NEE) with photosynthetically active radiation (PAR) and air temperature (T) on sunny and cloudy days during the growing season in the Yellow River Delta

方程 Equation R2 p n 晴天 Sunny day NEE = -0.005PAR - 0.28T + 4.06 0.41 <0.001 288 阴天 Cloudy day NEE = -0.006PAR - 0.107T + 2.67 0.42 <0.001 288 阴天和晴天差量 Difference between sunny and cloudy days ΔNEE = -0.004ΔPAR - 0.123ΔT - 2.54 0.63 <0.001 288