新疆喀纳斯保护区森林碳储量及碳密度研究

基于森林资源二类清查数据资料,利用材积源生物量法和平均生物量法,计算新疆喀纳斯国家自然保护区内森林植被的碳储量及其空间分布。结果表明:保护区内森林植被碳储量为3.004 7 Tg,平均碳密度为49.58 Mg/hm²。不同植被类型碳储量从大到小排序为:乔木林地、灌木林地、疏林地、散生木,其中乔木林地碳储量占到森林植被总碳储量的90.18%,各乔木林地的平均碳密度为68.87 Mg/hm²。区域分布上,林分碳储量、碳密度的空间分布呈现出西南高东北低的趋势; 而保护区内成、过熟林分的碳储量共占乔木林地碳储量的79.89%,若对现有森林采取合理的经营管理,可增加其碳汇能力。

Spatial pattern of carbon storage and carbon density in forest vegetation of the Kanas National Natural Reserve

Carbon storage and its spatial distribution in forest vegetation of the Kanas National Nature Reserve were estimated by both volume-derived and average biomass methods according to the data from Forest Resource Inventory. Results showed that carbon storage was 3.004 7 Tg,and mean carbon density 49.58 Mg/hm². The carbon storage was in the sequence of standing forest, shrub forest, open forest and scattered trees. Carbon storage of the standing forests accounted for 90.18% of the total in this area. The average carbon density of standing forests was 68.87 Mg/hm². Regional distribution of the forest carbon storage and carbon density had a trend of increase from southeast to northwest. The carbon storage of the standing forests was mainly consisted by mature and over matured forests,accounting for 79.89% of the total forest carbon storage in the area. This implies the proper management of the present forests could increase the carbon sequestration of the forest ecosystems.