湘北湿地松人工林生物量分配格局与碳汇潜力研究  

Study on biomass allocation pattern and carbon sink potential of Pinus elliottii plantation in northern Hunan

作　　者：王辽阔 何介南 WANG Liaokuo;HE Jienan(College of Forestry,College of Soil and Water Conservation,Central South University of Forestry&Technology,Changsha 410004,Hunan,China)

机构地区：[1]中南林业科技大学林学院、水土保持学院,湖南长沙410004

出　　处：《湖南林业科技》2025年第2期10-18,共9页Hunan Forestry Science & Technology

基　　金：国家重点研发计划课题(2022YFD2200505)。

摘　　要：湿地松作为常见的针叶树种,在我国南方被广泛种植,其碳汇能力一直备受关注。在湖南省华容县设置了17个湿地松固定样地,估算了各样地的森林植被生物量、生态系统各层碳储量及植被碳汇能力。结果表明:不同龄组湿地松人工林林分的生物量范围为25.04~323.55t·hm^(-2),随林龄的增长呈增加趋势,且各龄组之间差异极显著(P<0.01)。乔木层生物量占比最高,超过60%;林下植被和枯死物生物量占比分别为4.9%~22.4%和5.9%~10.9%。湿地松林分不同龄组的碳密度为101.32~264.14t·hm^(-2),随林龄的增加也呈增长趋势,且各龄组间差异显著(P<0.05)。不同龄组植被的碳储量为2.79~7.33t·hm^(-2)·a-1,湿地松碳汇能力在近熟林阶段达到顶峰。该研究揭示了湿地松林分生物量、碳汇能力的变化与湿地松生长的关系,为优化湿地松人工林经营模式、提高森林碳汇能力、促进林业可持续发展奠定了基础。As a common coniferous tree species,Pinus elliottii is widely planted in southern China,and its carlmn sink edacity has attracted much attention.Seventeen jjermanent plots of P.elliottii were set up in Huarong County,Hunan Province,and the biomass of forest vegetation,carbon storageof each layer of the ecosystem and carbon sink capacity of vegetation were estimated.Hie results showed that the stand biomass P.elliottii plantation in different age groups ranged from 25.04 to 323.55 t·hm^(-2),which increased with the increase of forest age,and there were significant differences lietween different age groups(P<0.01).ITie biomass of tree layer accounted for the highest proportion,more than 60%.The biomass of undersloiy vegetation and litter accounted for 4.9%〜22.4% and 5.9%〜10.9%,respectively.The carbon density of forest in different age groups ranged from 101.32 to 264.14 t·hm^(-2),which also increased significantly witli the increase of forest age(P<0.05).The carbon storage of vegetation in different age groups was 2.79-7.33 t·hm^(-2)a^(-1),and reached the peak in the near mature forest stage.This study revealed the relationship between the changes of forest biomass and carbron sink opacity and the growth of P.elliottii,which laid a foundation for optimizing the management mode of P.elliottii artificial forest,improving the forest carbon sink capacity and promoting the sustainable development of forestry.

关 键 词：生物量 碳密度 碳汇能力 湿地松 

分 类 号：S791.246[农业科学—林木遗传育种] S718.556[农业科学—林学]