Study on Spatial and Temporal Dynamics Characteristics of Climate Production Potential in Xiaoxing'an Mountains

Han Lidong; Zhao Chang; Wo Xiaotang

doi:10.16765/j.cnki.1673-7148.2026.02.008

Abstract：Based on temporal and spatial climate series and DEM data set,using the physical model of vegetation biomass expressed by climate factors,this paper evaluated the temporal and spatial dynamics of vegetation climate production potential in Xiaoxing'an Mountains in the climate-sensitive area of boreal forest,and analyzed the variation patterns of climate production potential,and its coordination degree with terrain resources and regional differences.The results show that from 1971 to 2020,the climate pro-duction potential of the north and south regions of Xiaoxing'an Mountains has an increasing trend(except NPPR in the southern region),and the increase trend of the north region is more significant than that of the south region.The whole region climate production potential tendency rates are as follows,NPPT:21.267-30.730 kg·hm-2·a-1,NPPR:-2.569-10.783 kg·hm-2·a-1,NPPV:9.501-21.783 kg·hm-2·a-1,NPPB:9.502-24.231 kg·hm-2·a-1.From 1971 to 2020,NPPR was the highest in the north region except for 2017,while NPPR was the highest in nearly 80%years in the south region.Both NPPT and NPPV mutations occurred in the early 1990s in the north region,while NPPV lagged behind NPPT in the south region.NPPT,NPPR and NPPV in the two regions have a scale oscillation period of about 25-30 a,and the maximum peak value corresponds to 28 a.NPPT and NPPV were negatively correlated with elevation(P<0.05),NPPR was positively correlated with slope(P<0.05),and the correlation between climate production potential and slope direction was not significant.