实验增温对陆地生态系统根系生物量的影响

魏春雪, 杨璐, 汪金松, 杨家明, 史嘉炜, 田大栓, 周青平, 牛书丽

Effects of experimental warming on root biomass in terrestrial ecosystems

WEI Chun-Xue, YANG Lu, WANG Jin-Song, YANG Jia-Ming, SHI Jia-Wei, TIAN Da-Shuan, ZHOU Qing-Ping, NIU Shu-Li

表1 模拟增温对根系总生物量(TRB)、细根生物量(FRB)、粗根生物量(CRB)、根冠比(R/S)的影响(ln RR)与年平均气温(MAT)、年降水量(MAP)、干旱指数(AI)的关系

Table 1 Effects of simulated warming on total root biomass (TRB), fine root biomass (FRB), coarse root biomass (CRB) and root:shoot ratio (R/S) in relation to mean annual air temperature (MAT), mean annual precipitation (MAP) and aridity index (AI)

根系生物量效应值 Effect size of root biomass MAT MAP AI df F p df F p df F p TRB 113 0.235 2 0.603 113 1.110 7 0.187 113 2.597 4 0.110 FRB 360 34.760 0 0.000*** 360 43.652 0 0.000*** 360 16.726 0 0.000*** CRB 26 0.082 6 0.776 26 1.400 2 0.248 26 3.448 9 0.075 R/S 108 2.766 0 0.099 108 0.103 0 0.749 108 0.109 4 0.742