黄河三角洲典型滨海盐沼湿地土壤CO2和CH4排放对水盐变化的响应

李雪, 董杰, 韩广轩, 张奇奇, 谢宝华, 李培广, 赵明亮, 陈克龙, 宋维民

Response of soil CO2 and CH4 emissions to changes in moisture and salinity at a typical coastal salt marsh of Yellow River Delta

LI Xue, DONG Jie, HAN Guang-Xuan, ZHANG Qi-Qi, XIE Bao-Hua, LI Pei-Guang, ZHAO Ming-Liang, CHEN Ke-Long, SONG Wei-Min

表2 土壤水分和盐分对土壤理化性质和碳矿化速率影响的方差分析

Table 2 Results of two-way ANOVA on the effects of soil moisture and salinity on soil physical and chemical characteristics as well as soil carbon mineralization rate

因子 Factor TC TN DOC MBC Cumulative CO2 Cumulative CH4 GWP CH4:CO2 土壤水分 Soil moisture p <0.01 0.65 <0.01 <0.01 <0.01 <0.01 <0.01 0.09 F 33.78 0.56 21.08 8.33 72.17 6.38 14.21 2.42 土壤盐分 Soil salinity p 0.22 <0.01 0.15 0.02 <0.01 <0.01 <0.01 0.01 F 1.59 9.06 2.22 6.07 47.68 14.73 22.99 7.71 土壤水分×盐分 Soil moisture × salinity p 0.79 0.92 0.06 0.04 0.29 0.96 0.95 0.88 F 0.35 0.17 2.81 3.33 1.33 0.10 0.12 0.23