四川省森林植被固碳经济价值动态

Economic value dynamics of carbon sequestration in forest vegetation of Sichuan Province

正确估算森林植被固碳经济价值可为森林生态系统的生态效益评价提供基础数据。利用1997年和2014年两期四川省森林资源清查数据,依据不同森林类型的生物量与蓄积量回归方程和支付意愿法,估算了四川省两个时期森林植被的固碳经济价值。结果表明,从1997年到2014年,四川省森林植被固碳经济价值由703.17亿元增长到865.75亿元,净增长162.58亿元,年均增长9.56亿元,年均增长率为1.36%;在两个时期,云冷杉林的固碳经济价值比重最大,分别占总固碳经济价值的54.82%和46.62%,表明云冷杉森林植被类型在全省森林植被固碳经济价值中占有重要的地位;四川省天然林和人工林植被的固碳经济价值均呈增加趋势,并且人工林植被固碳经济价值年均增长速率(7.42%)明显高于天然林(1.03%);四川省森林植被固碳经济价值总体上随林龄的增加而增加。研究结果说明,实施包括天然林保护工程在内的森林保护和经营管理措施对提高森林植被的固碳经济价值具有重要的作用。

Correctly estimating the economic value for the sequestration of carbon in forest vegetation can provide basic data for the evaluation of eco-benefits in forest ecosystems. We used forest resource inventory data of Sichuan Province from 1997 and 2014 to estimate the economic value of forest carbon sequestration in Sichuan Province in two periods. The results show that from 1997 to 2014,the economic value of forest carbon sequestration in Sichuan Province increased from 70.317 billion yuan to 86.575 billion yuan. The net increase was 16. 258 billion yuan and the average annual growth was 0. 956 billion yuan,with an average annual growth rate of 1.36%. In 1997 and 2014,spruce fir forest had the largest economic value,which accounted for 54.82% and 46.62% of the total carbon sequestration economic value,respectively. This indicates that spruce fir forest plays an important role in the economic value of forest carbon sequestration in the province. The economic value of carbon sequestration in natural forests and planted forests in Sichuan Province showed an increasing trend,and the economic value in planted forests( 7.42%) was significantly higher than that in natural forests( 1.03%). The economic value of forest carbon sequestration in Sichuan Province generally increased with the increase of forest age groups. The results show that the implementation of forest protection and management measures,including natural forest protection projects,played an important role in improving the economic value of forest carbon sequestration.