云南省森林净碳储量估算及影响因素分析——基于碳源和碳汇双重角度

Estimation of Net Forest Carbon Stock and Analysis of Influencing Factors in Yunnan Province——Based on the Dual Perspective of Carbon Source and Carbon Sink

以云南省森林为研究对象,基于第九次森林资源清查报告、《云南省统计年鉴》等资料,从碳源和碳汇双重角度,利用蓄积量扩展法计算森林生态系统中林木、林下植物和林地三部分碳储量,并计算森林火灾和病虫鼠害导致的碳排放量,进而估算出云南省2014-2018年的森林净碳储量;运用主成分分析法和回归分析法得出了森林蓄积量和森林管护面积是影响云南省森林净碳储量的主控因子,森林蓄积量、森林过火面积和病虫鼠害发生面积是关键因子的结论,据此为进一步提高森林净碳储能力提供参考建议。

Taking forests in Yunnan Province as the research object,based on the 9th Forest Resources Inventory Report and Yunnan Statistical Yearbook,this paper analyzes the carbon storage of trees,understory plants and forest land in the forest ecosystem by using the stock expansion method,and calculates the carbon emissions caused by forest fires and pests and rodents,and then estimates the net forest carbon storage in Yunnan Province from 2014 to 2018.Principal component analysis and regression analysis were used to conclude that forest stock and forest management and protection area were the main controlling factors affecting forest net carbon storage in Yunnan Province,and forest stock,forest fire area and pest occurrence area were the key factors,which provided a reference for further improvement of forest net carbon storage capacity.