降水变化对内蒙古典型草原地上生物量的影响

苗百岭,梁存柱,史亚博,梁茂伟,刘钟龄

Temporal changes in precipitation altered aboveground biomass in a typical steppe in Nei Mongol, China

MIAO Bai-Ling,LIANG Cun-Zhu,SHI Ya-Bo,LIANG Mao-Wei,LIU Zhong-Ling

表5 内蒙古锡林郭勒典型草原羊草样地群落地上峰值生物量与各等级降水发生频率之间的相关分析

Table 5 Correlation between peak biomass and the frequency of precipitation in different levels in the typical grassland of Xilin Gol, Nei Mongol

编号 ID 日降水量(mm) Daily precipitation 生物量 Biomass 多年生杂类草 Perennial forbs 多年生根茎禾草 Perennial rhizome grass 多年生丛生禾草 Perennial bunchgrasses 一二年生植物 Annuals and biennials 半灌木 Semi-shrubs 灌木 Shrubs I 0.1-5 -0.23 -0.50** -0.02 -0.04 -0.01 0.40* -0.27 II 5-10 -0.06 0.19 -0.13 -0.14 0.15 -0.28 0.18 III 10-15 0.15 0.25 -0.01 0.12 -0.13 -0.16 0.23 IV 15-20 0.24 0.24 0.04 0.18 -0.05 -0.03 0.17 V 20-25 0.12 0.10 0.07 0.17 -0.09 -0.08 -0.13 VI 25-30 0.33 0.55** 0.19 0.04 -0.04 -0.17 -0.08 VII 30-35 0.19 0.34 0.11 -0.02 -0.07 -0.19 0.11 VIII >35 0.22 -0.00 0.39* -0.00 -0.00 -0.00 -0.17