森林工程2026，Vol.42Issue(4)：659-668,10.DOI:10.7525/j.issn.1006-8023.2026.04.001
东北地区落叶松林碳固持能力及其影响因素
Carbon Sequestration Capacity of Larch Forests in Northeast China and Its Influencing Factors
摘要
Abstract
To clarify the differences in carbon sequestration capacity of Larix gmelinii forests along different latitudinal gradients and their influencing factors,Larix gmelinii forests at nine sites with different latitudes across the Daxing'an-ling,Xiaoxing'anling,and Changbai Mountains in Northeast China(Huanren,Helong,Lushuihe,Qinghe,Dailing,Wuying,Jiagedaqi,Xinlin,and Mohe)were selected as study subjects.Using a forest inventory method,vegetation car-bon density,soil organic carbon density,and annual carbon sequestration rate were quantified,and the influence of stand structure and climatic factors on carbon sequenstration capacity was analyzed.The results showed that vegetation carbon density and annual vegetation carbon sequestration rate across the nine sites ranged from 22.44-126.69 t/hm2 and 1.05-4.27 t C/(hm2·a),respectively,both exhibiting significant regional differences(P<0.05),with the Lesser Khingan Mountains showing the highest annual sequestration rate.Soil organic carbon contents at depths of 0-10 cm,10-20,20-30,30-40,and 40-50 cm ranged from 71.61-91.21,15.09-44.94,5.99-24.21,3.07-14.55 mg/g,and 2.55-11.96 mg/g,respectively.Soil organic carbon content decreased significantly with increasing depth,showing no significant differences among regions at 0-10 cm but significant differences at deeper layers.Soil carbon density and total carbon density ranged from 18.41-113.87 t/hm² and 40.89-219.81 t/hm²,respectively,both differing signifi-cantly among regions.Vegetation carbon density and annual carbon sequestration rate were significantly correlated with latitude,mean annual temperature,and mean diameter at breast height(P<0.05),but showed no correlation with an-nual precipitation(P>0.05).These findings indicate that favorable climatic conditions and stable stand structure en-hance the carbon accumulation capacity of larch forests.关键词
落叶松/碳固持/植被碳密度/土壤碳密度/纬度梯度/气候因子/林分结构/森林生态系统Key words
Larch/carbon sequestration/vegetation carbon density/soil carbon density/latitudinal gradient/climatic factors/stand structure/forest ecosystem分类
农业科技引用本文复制引用
刘光明,王波,刘霁广,张全智..东北地区落叶松林碳固持能力及其影响因素[J].森林工程,2026,42(4):659-668,10.基金项目
国家重点研发计划项目(2021YFD2200401). （2021YFD2200401）
