气候变化背景下近30年祁连山高寒荒漠分布时空变化

张富广,曾彪,杨太保

Spatiotemporal distribution changes in alpine desert belt in Qilian Mountains under climate changes in past 30 years

ZHANG Fu-Guang,ZENG Biao,YANG Tai-Bao

表6 祁连山高寒荒漠下界分布变化与气候变化间的非线性关系

Table 6 Nonlinear relationship between distribution of the lower boundary of the alpine desert and climatic variables in the Qilian Mountains from 1990 to 2015

气温垂直递减率 Vertical lapse rate of temperature (℃·100 m-1) 1990-2015增温幅度 Warming temperature (℃) 等效向上推进高度 Equivalent upward moving (m) 实际向上推进高度 Actual upward moving (m) 过渡带上平均坡度 Average slope (°) 东段 Eastern 0.53 1.12 211.32 40.23 26.76 中段 Middle 0.49 1.26 257.14 35.22 18.06 西段 Western 0.51 0.50 98.04 60.82 13.60