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4 1990S、2000S和2010S祁连山高寒荒漠下界平均海拔变化

Table 4 Average elevation of the lower boundary of the alpine deserts in the Qilian Mountains in the 1990S、2000S and 2010S.

年代 Years 东段 Eastern 中段 Middle 西段 Western 下界平均海拔 Average elevation (m) 向上推进 Upward moving (m) 下界平均海拔 Average elevation (m) 向上推进 Upward moving (m) 下界平均海拔 Average elevation (m) 向上推进 Upward moving (m) 1990S 3 914.45 4 042.80 4 159.05 33.83 8.25 59.51 2000S 3 948.28 4 051.05 4 218.56 6.40 26.97 3.31 2010S 3 954.68 4 078.02 4 221.87 总计 Sum 40.23 35.22 62.82