甘肃省祁连山林区林地碳储量的分布特征和动态变化  

Distribution characteristics and dynamic changes of forest land carbon storage in the Qilian Mountains forest area of Gansu Province

作　　者：赵方圆 王琼芳 赵万奎 程小云[1,2] ZHAO Fang-yuan;WANG Qiong-fang;ZHAO Wan-kui;CHENG Xiao-yun(Gansu Ecological Resources Monitoring Center,Lanzhou 730020,China;Gansu Forestry Investigation and Planning Institute,Lanzhou 730020,China)

机构地区：[1]甘肃省生态资源监测中心,兰州730020 [2]甘肃省林业调查规划院,兰州730020

出　　处：《湖北农业科学》2023年第10期58-62,73,共6页Hubei Agricultural Sciences

摘　　要：基于甘肃省森林资源管理“一张图”年度更新数据,运用生物量扩展因子法、单位面积生物量法计算林地碳储量,并结合土地利用类型转移矩阵综合分析了2016—2019年甘肃省祁连山林区林地碳储量的时空变化特征。结果表明,牧草地、未利用地、建设用地向林地转移碳储量2.26万t,生态建设加强后呈牧草地、未利用地、建设用地向林地转回的趋势。乔木林地、疏林地、灌木林地的碳储量在2016—2019年共增加了19.20%,其中乔木林地碳储量增长占林地碳储量总增加值的98.26%,且以未来碳汇增长潜力较大的中龄林和幼龄林碳储量增长速度最快,分别为26.70%和26.34%。Based on the annual update data of a map of forest resources management in Gansu Province,the carbon storage of forest land was calculated by the biomass expansion factor method and the biomass per unit area method,and the temporal and spatial variation characteristics of forest land carbon storage in the Qilian Mountains forest area of Gansu Province from 2016 to 2019 were comprehensively analyzed combined with the land use type transition matrix.The results showed that grassland,unused land,and construction land transferred 22600 t of carbon storage to forest land.After ecological construction was strengthened,there was a trend of turning grassland,unused land and construction land back to forest land.The carbon storage of arbor forest,sparse forest and shrub forest increased by 19.20% from 2016 to 2019,of which the increase of arbor forest carbon storage accounted for 98.26%,and the carbon storage of middle-aged forests and young forests with greater potential for carbon sink growth in the future had the fastest growth rates,which were 26.70% and 26.34%,respectively.

关 键 词：生态治理 碳储量 碳密度 祁连山林区 甘肃省 

分 类 号：S718.5[农业科学—林学]