摘要
树木地上和地下生物量是森林生态系统中重要的碳汇,了解林木地下部分和地上部分的生物量分配情况对于估算森林碳汇具有重要作用。以海南岛北部菠萝蜜、荔枝和龙眼树为研究对象,每个树种各选取30株不同径阶的样木进行整株挖掘,对其生物量、碳储量及其分配特征进行了研究。结果表明:不同经济林树种在各组分生物量最优模型的选择上,基本以W=a D^bH^c模型为最优;3种经济林树种各组分生物量的大小均表现为树干>根系>树枝>树叶;菠萝蜜、荔枝和龙眼树树枝的含碳比率相差不大,分别为0.39、0.41、0.40,但其树干、根系、树枝和全树的含碳比率却均存在差异,各组分碳储量的大小均表现为树干>根系>树枝>树叶。文中分析认为,基于树高和胸径的相对生长模型,可以实现对经济林树种各组分生物量的准确拟合和碳储量的有效估算。
The aboveground and underground biomass of trees is an important carbon sink in forest ecosystem. Understanding the distribution of biomass between underground and aboveground is important for estimating forest carbon sequestration. Inorder to calculate biomass, carbon storage and distribution characteristics of the economic forest （Litchi chinensis, Dimocarpus longan and Artocarpus heterophyllus）. The whole plant was excavated by selecting 30 different diameter class wood samples in the north of Hainan Island. The results showed that： （1） The optimal biomass model of different components of three economic forest were W=aDbHc, （2） The distribution pattern biomass was in the order of stem 〉 root 〉 branch 〉. leaf. （3） Total carbon content rates ofL. chinensis, D. longan and A.heterophyllus were 0.39,0.41,0.40,there were no significant difference, but carbon content rates of some different components including roots,stems, leaves and totals of 3 economic forests were significant difference, its distribution pattern of carbon storage was in the order of stem 〉 root 〉 branch 〉 leaf. The relative growth model based on tree height and chest diameter can be used to estimate accurately the biomass and carbon storage.
作者
杨众养
陈宗铸
陈小花
杨琦
雷金睿
YANG Zhongyang;CHEN Zongzhu;CHEN Xiaohua;YANG Qi;LEI Jinrui(Hainan Forestry Science Research Institute,Haikou 571100,Hainan,China)
出处
《经济林研究》
北大核心
2018年第3期62-68,共7页
Non-wood Forest Research
基金
海南省科技厅海南省科研院所技术开发专项"海南岛热带林碳汇参数及模型研究"(KYYS-2015-18)
国家重点研发计划项目子课题"降香黄檀人工林高效培育技术研究与示范"(2016YFD0600601-4)
