泰州市森林碳储量现状及碳汇能力分析

Analysis of forest carbon storage and carbon sequestration capacity in Taizhou

基于泰州市森林资源监测数据,采用转换因子连续函数法计算泰州市辖区不同森林类型的碳储量,并分析泰州市森林资源碳汇能力。结果表明:泰州市辖区森林碳储量为492 366.50 t,其中乔木林碳储量为477 255.50 t,竹林碳储量为6 367.10 t,灌木林碳储量为8 743.91 t。4个辖区中,姜堰区森林碳储量、碳密度均最高,分别为205 631.75 t和42.60 t/hm^(2),海陵区森林碳储量、碳密度均最低。林分类型中以其他硬阔叶树类、樟树、杨树的碳储量最高,分别占乔木林碳储量的39.35%,18.00%,14.38%。乔木林中杨树碳密度最大,达62.40 t/hm^(2),其次是樟树碳密度为57.84 t/hm^(2)。与2010年森林资源清查数据估算结果相比,泰州市辖区森林碳储量增加了53 242.65 t,森林碳密度增长了13.15 t/hm^(2);相对2010年,姜堰区森林面积减少了53%,但森林碳密度增加了2.10倍,增长幅度最大;而海陵区的森林碳密度增长缓慢。总之,泰州市森林资源在碳汇能力方面得到了显著提升,阔叶树种是森林碳储量的主要贡献者,在今后可从树种配置和林龄结构优化等方面进一步提升泰州市森林碳汇能力。

Based on the annual monitoring data of forest resources in Taizhou,the carbon storage of different forest types in Taizhou was calculated by using the conversion factor continuous function method and the forest carbon sequestration capacity was analyzed.The results showed that the total forest carbon storage in Taizhou was 49236.65 t,including 477255.50 t in arbor forest,6367.10 t in bamboo forest and 8743.91 t in shrub forest.Among the four districts,Jiangyan exhibited the highest levels of both forest carbon storage(205631.75 t)and carbon density(42.60 t/hm^(2))while Hailing had the lowest values at 56,942.26 t for forest carbon storage and 21.54 t/hm^(2) for carbon density.In different arbor forests,other hard broad-leaved species accounted for approximately 39.35%of total arbor forest carbon storage,followed by camphor tree(18%)and poplar(14.38%).The carbon density of poplar was the highest,which was 62.40 t/hm^(2),followed by camphor tree with 57.84 t/hm^(2).Compared with the estimation results of forest resource inventory data in 2010,the forest carbon storage increased by 53242.65 t,and the forest carbon density also increased by 13.15 t/hm^(2).Compared to 2010,Jiangyan District experienced a 53%decrease in forest area,yet witnessed a 210%increase in carbon density,The forest carbon density in Hailing District increased slowly.In general,the carbon sequestration capacity of forest resources in Taizhou City has been significantly enhanced,with broad-leaved species playing a predominant role in forest carbon storage.Future efforts could be focused on adjusting the composition of tree species and optimizing the structure of forest age to further improve the forests′carbon sequestration potential in Taizhou.