摘要
利用大规模植树造林和植被恢复来提升森林固碳能力,已成为减缓气候变化的主要途径之一。明确特定林分固碳能力变化,合理估算森林固碳潜力,对于开展区域森林增汇管理具有重要意义。本研究以湖北省江汉平原杨树人工林研究对象,按照不同林龄设置74个固定样地,采用林地角规调查的方法,动态监测了不同林龄杨树生长规律,构建了杨树生长模型,探讨了杨树林人工林固碳潜力。结果表明:江汉平原杨树人工林林龄与平均胸径呈正相关关系,与林分密度呈负相关关系。林龄25 a的成熟杨树林碳密度为97.13 t C/hm^(2),最大的植被碳密度为167.50 t C/hm^(2),理论平均固碳潜力达到1474.73万t。建议以持续发挥杨树林地碳汇功能为目的开展经营,延长森林经营周期,加强经营管理,合理配置树种,营造混交林,减少林木生物量损失,从而进一步提升江汉平原地区杨树人工林碳汇功能。
It has become one of the main ways to mitigate climate change.That Improving the carbon sequestration capacity of forests by afforestation and vegetation restoration.It is great significance for regional forest sink management to estimate forest carbon sequestration potential by defining the change of carbon sequestration capacity of specific stands.In this paper,74 fixed plots were set up according to different ages of poplar plantations in Jianghan Plain in Hubei Province.The growth pattern of poplar plantations was monitored continuously and dynamically by using the method of forest traffic regulation investigation.Then we constructed a growth model of poplar plantation to study the carbon sequestration potential of poplar plantation.The results showed that the age of artificial stand was positively correlated with average DBH,and negatively correlated with stand density in Jianghan Plain.The carbon density of mature poplar forest with 25 years of stand age is 97.13 t C/hm^(2),the maximum vegetation carbon density is 167.50 t C/hm^(2),and the theoretical average carbon sequestration potential is 1474.73 millon tons.In order to improve the carbon sequestration function of poplar plantation in Jianghan Plain,it is suggested that poplar forest should be managed continuously to play the carbon sink function,prolong the forest management cycle,strengthen the management and management,rationally allocate tree species,build mixed forest and reduce the biomass loss of forest.
作者
罗雷
王晓荣
陈臻
徐立
张涛
王亮
谢文
曹祖荣
刘少峰
Luo Lei;Wang Xiaorong;Chen Zhen;Xu Li;Zhang Tao;Wang Liang;Xie Wen;Cao Zurong;Liu Shaofeng(Forestry Investigation and Planning Institute of Hubei Province,Wuhan 430079;Hubei Academy of Forestry,Wuhan 430075;Hubei provincial Fast-growing and High-gielding Forest Engineering Research Center,Wuhan 430075;Forest Inventory and Planning Institute of Enshi Autonomous Prefecture Enshi,445000;Zigui County Forestry Bureau,Yichang 443600;Shishou Popar Research Institute of Hubei Academy of Forestry,Jingzhou 434400)
出处
《湖北林业科技》
2022年第4期1-4,11,共5页
Hubei Forestry Science and Technology
基金
湖北省林业科技支撑重点项目“湖北主要造林树种碳计量模型研究”([2022]LYKJ08)
武汉市园林和林业局科技项目“以提升武汉森林碳汇能力为目的的森林经营模式研究”。
关键词
杨树人工林
碳密度
固碳潜力
江汉平原
Poplar plantation
carbon density
carbon sequestration potential
Jianghan Plain
作者简介
罗雷(1986-),男,工程师,主要从事林业生态与森林资源管理研究;通讯作者:王晓荣。
