基于Holdridge分类系统的内蒙古草原类型气候区划指标

利用内蒙古105个气象站资料,计算了Holdridge生命地带分类系统的年降水量、年生物温度和可能蒸散率,确定了内蒙古各草原类型区上述三个气候要素的界限值。在此基础上,构建了内蒙古草原综合气候指数(GCI),确定了定量化的内蒙古草原类型综合气候区划指标,并对该指标划分的内蒙古草原类型进行了验证。结果表明,利用内蒙古草原类型综合气候区划指标划分的内蒙古草原类型与内蒙古实际的草原类型具有较好的一致性,能够反映内蒙古不同草原类型的空间分布状况,可以用于内蒙古草原气候区划。

Climatic Distribution Indicators of Inner Mongolia Grassland Based on Holdridge Classification System

Based on meteorological data from 105 stations in Inner Mongolia,three elements of Holdridge life zone classification system,annual precipitation,annual biotemperature and potential evapotranspiration ratio,were calculated,and the threshold of three elements of Inner Mongolia grassland types were determined.On that basis,the general climate index（GCI） of Inner Mongolia grassland was constructed,and the quantitative climatic distribution indicators of Inner Mongolia grassland types were determined.Inner Mongolia grassland types were divided according to the climatic distribution indicators,which was consistent with the actual types of Inner Mongolia grassland.The climatic distribution indicators could reflect the spatial distribution conditions of Inner Mongolia grassland types,and could apply to Inner Mongolia grassland climatic regionalization.