河南杨树碳储量及其增汇能力

Carbon Storage and Its Capacity for Populus L. in Henan

依据森林资源清查数据,采用生物量转换系数法,区分林分和四旁林木两种类型,估算了河南杨树的碳储量和增汇能力。结果表明:2013年河南杨树碳储量为38. 25 Tg,其中林分碳储量25. 38Tg,占总量的66. 4%,林分平均碳密度28. 7 t/hm2,四旁林木碳储量12. 87 Tg,占杨树总碳储量的33. 6%;杨树年增固碳量5. 28 Tg,其中林分年增固碳量3. 50 Tg,四旁林木年增固碳量1. 78 Tg。可见,杨树在区域林木碳储量构成中扮演着重要角色,同时杨树四旁林木在固碳增汇方面的作用也不容被忽视。

In this study, using the biomass expansion factors and distinguishing the forests from four-side trees, we estimated the carbon storage and its capacity of Populus L. in Henan based on the forest inventory data. The results showed that the carbon storage of Populus L. in Henan was 38.25 Tg in 2013, of which 25.38 Tg of carbon was from forests, accounting for 66. 4% of the total, and the average carbon density was 28.7 t/hm2. The carbon storage of four-side trees was 12. 87 Tg, accounting for 33.6% of the total. Populus L. improved the carbon storage with 5.28 Tg one year, of which the forests increased in the number of 3.50 Tg of carbon, four-side trees increased 1.78 Tg of carbon. Therefore, Populus L. play an important role in the composition of regional forest carbon storage. And at the same time, the importance of Populus L. of four-side in the role of carbon sequestration cannot be ignored.