中国红树林北缘区不同起源秋茄林碳储量比较研究

摘要

The carbon storage and carbon allocation patterns of natural and artificial Kandelia candel wetland ecosystem were investigated in north marginal region of mangrove.The results were as follows:(1)The ecosystem's carbon stock(tree layer+understory+litter floor+soil)was about 221.8 t/hm in the K.candel natural forests,while that of the plantations was 154.6 t/hm2.We primarily concluded that the carbon stock in the natural forests was higher than that in the plantations; (2)The carbon pool in the soil was the main resource of ecosystem's carbon storage of both K.candel natural forests and plantations,whose respective amounts were 87.0％ and 93.5％.The carbon stock of tree layer was on the second place(natural forests:12.8％; plantations:6.5％)and the least contribution to the stock of carbon was attributed to the understory and litter floor,which was only 0.01％ to 0.12％; (3)Compared with the soil carbon pools outside the forest,the superiority of wetland ecosystem of K.candel mangrove is obvious.%对红树林自然分布区域北缘区不同起源(天然林和人工林)秋茄林湿地生态系统的碳储量及分配格局进行对比分析.结果表明:(1)秋茄天然林生态系统碳储量(乔木层+林下植被+死地被物+土壤碳)约为221.8 t/hm2,人工林约为154.6 t/hm2,秋茄天然林生态系统在碳汇功能上优于人工林；(2)无论天然林还是人工林生态系统,土壤是主要碳库,分别占总碳储量87.0％和93.5％;乔木层碳储量次之(天然林12.8％；人工林6.5％),林下植被和死地被物对生态系统碳储量贡献微小,仅0.01％～0.12％；(3)与林外土壤碳库相比,红树林湿地碳库更具优势.