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利用1974~2013年福建省8次森林资源连续清查成果数据,选用生物量扩展因子(BEF)方程估算地上生物量,采用根冠比估算地下生物量,选取碳含率估算乔木层碳储量,估算森林资源清查间隔期天然阔叶林碳汇值,分析碳储量、碳汇值的动态变化。结果表明:1974~2013年福建省8次森林资源清查的天然阔叶林乔木层碳储量分别为8 252.39万t、7 489.70万t、7 599.11万t、8 751.12万t、9 51.16万t、10 882.78万t、11 703.32万t、13 903.42万t。1979~1988年2次复查碳储量较第1次有所减少。1983~2013年连续6次复查碳储量呈递增态势,其中2009~2013年碳储量增幅最大。1979~2013年福建省7次森林资源连续清查期间的天然阔叶林乔木层碳汇分别为-2 796.51万t、401.15万t、4 224.05万t、2 566.81万t、5 249.27万t、3 008.67万t、8 067.00万t,其中1979~1983年碳汇为负值,1984~2013年碳汇为正值。
Based on the continuous inventory data of eight forest resources in Fujian Province from 1974 to 2013, the aboveground biomass was estimated using the biomass expansion factor (BEF) equation. The underground biomass was estimated by root / shoot ratio. The carbon sequestration value of natural broad-leaved forest in the period of inventory of forest resources is analyzed to analyze the dynamic changes of carbon storage and carbon sequestration. The results showed that the tree carbon stocks of natural broad-leaved forests in the eight forest resources inventory in Fujian Province from 1974 to 2013 were 82.539 million tons, 74.897 million tons, 75.991 million tons, 87.5112 million tons and 91.116 million tons respectively, 108,827,800 t, 117,033,200 t, and 13,903,420 t. From 1979 to 1988, the carbon stocks for the second review were somewhat reduced compared with the first. Carbon stocks were reviewed six times in a row from 1983 to 2013, with carbon stocks increasing the most from 2009 to 2013. From 1979 to 2013, the tree layer carbon sequestration of natural broad-leaved forests in seven consecutive forest resource inventory periods in Fujian Province were -27,965,100 t, 4,021,500 t, 4,224.05 t, 25,668,100 t, 52,492,700 t, 3 0086,700 t, 86,770,000 t, of which carbon sinks were negative from 1979 to 1983, and carbon sinks were positive from 1984 to 2013.