福建省不同地区森林生态系统的碳汇潜力及经济价值

Regional Analysis and Economic Value Assessment of Potential Forest Ecosystem Carbon Sink in Fujian Province

以全国森林资源清查和福建省地方政府年度报告数据为资料,采用蓄积量扩展模型,研究2015—2020年福建省不同地区的森林生态系统的碳汇潜力及其分布特征。结果表明:相比过去40 a,2015—2020年间福建省森林生态系统的碳汇有所提升;在2015—2020年间,福建省不同地区碳汇(CO_(2))的变化较大,介于46.9~2170万t·a^(-1),其中以南平市最高;碳汇密度(CO_(2))介于7.09~19.17 t·a^(-1)·hm^(-2),以福州市最高;各地区分布特点,碳汇和人均碳汇为“西北高、东南低”、碳汇密度为“东北高、西部低”;福建省碳汇经济价值为45.76亿元·a^(-1),不同地区变化幅度较大,介于0.20~9.30亿元·a^(-1)之间,均值为5.08亿元·a^(-1);福建省GDP水平更低的地区,碳汇经济价值相对GDP的水平更高。自然禀赋的不同,是导致福建省不同地区间碳汇潜力呈现较大差异的主要原因。

Based on the results of the national forest inventory and annual government reports,the regional distribution and assessment of potential forest ecosystem carbon sink from 2015 to 2020 in Fujian Province were analyzed.The results indicated that:the carbon sink capacity of Fujian′s forest from 2015 to 2020 improved compared to the past 40 years;from 2015 to 2020,the carbon sink capacity of Fujian′s forest ecosystem ranged from 46.9 to 21.7 million t·a^(-1),and the maximum value was distributed in Nanping.Carbon sink per area(CPA)ranged from 7.09 to 19.17 t·a^(-1)·hm^(-2),and the maximum value was distributed in Fuzhou;the high values of carbon sink capacity and carbon sink per capita(CPC)were concerned in the northwest of Fujian Province,while the high values of CPA were concerned in the northeast;the total economic value of forest ecosystem carbon sink capacity in Fujian was 45.76 billion yuan·a^(-1),ranging from 20 to 930 million yuan·a^(-1)in different prefectures,and the average was 508 million yuan·a^(-1);the ratios of economic value of forest ecosystem carbon sink to GDP were higher in cities with lower GDP.The great regional differences in potential forest ecosystem carbon sink in Fujian Province may be related to the differences in natural endowments.