Vegetation-climate classification in Inner Mongolia based on C value and >5 ℃ accumulated temperature
Vegetation-climate classification in Inner Mongolia based on C value and >5 ℃ accumulated temperature
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发表时间：
2012
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通讯作者：
Yan Xiao-dong
中科院分区：
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作者：
Yan Xiao-dong
C value is a parameter of the water-heat correlative equation proposed by Qiwu Cui(1981),which characterizes the dryness or wetness of a region.Based on the observation data from 150 weather stations in Inner Mongolia in 1961-1990,this paper calculated the mean annual C value and 5 ℃ accumulated temperature(AT5) over the 30-year period in this region,and spatially interpolated them into raster grids with 8 km resolution by Kriging.In combining with the map of vegetation regionalization,a scatter plot map of C value and AT5 for ten vegetation zones in Inner Mongolia was produced,which better reflected the relationships between the vegetation zones and climatic indices in Inner Mongolia.The ranges of C value and AT5 for each vegetation zone were determined.According to the determined C value and AT5,the spatial distribution of the vegetation zones in Inner Mongolia was simulated.Kappa test showed that C value combined with AT5 could better reflect the spatial distribution of vegetation zones in Inner Mongolia.As a comprehensive climatic index,C value could provide important information for simulating the distribution of vegetation zones in Inner Mongolia.
