云南人工林碳储量变化规律探析

Study on the Variation of Carbon Sequestration of Plantation Forests in Yunnan Province

采用森林蓄积量扩展法,测算云南省人工林碳储量和碳密度,阐明各州市碳储量和碳密度分布态势。结果表明:云南省人工林碳储量和碳密度增长趋势明显,40年间碳储量实现净增10068.70万t,碳密度实现18.76 t/hm^(2)的绝对增量;云南16个州市碳储量和碳密度差异明显,其中以西双版纳碳储量贡献居首位,以怒江州人工林碳密度最大;全省人工林碳储量和碳密度呈明显的空间分布差异,总体为东部低、西部高,与云南不同地区的地理环境和自然因素密切相关。结合全省及其不同州市人工林碳储量和碳密度贡献现状,提出适合云南省的稳碳增汇路径选择。

Carbon sequestration and carbon density of plantation forests in Yunnan Province were calculated by forest accumulation expansion method to clarify the distribution of carbon sequestration and carbon density in each prefecture and city.The results showed that the carbon sequestration and carbon density of the plantation in Yunnan Province increased obviously,the net increase of carbon sequestration was 100.6870 million tons,and the absolute increase of carbon density was 18.76 t/hm^(2).There were significant differences in carbon sequestration and carbon density among 16 prefectures and cities in Yunnan,among which Xishuangbanna had the highest carbon sequestration contribution and Nujiang had the highest carbon density of plantation forest.The spatial distribution of carbon sequestration and carbon density of plantation forests in Yunnan Province was significantly different,with lower carbon sequestration in the east and higher carbon density in the west,which was closely related to the geographical environment and natural factors in different regions of Yunnan Province.Finally,based on the status quo of carbon sequestration and carbon density contribution of plantation forests in prefectures and cities in Yunnan Province,the path of carbon stabilization and sink increase for Yunnan Province was proposed.