Forest Carbon Sink and its Gross Ecosystem Product Accounting Model and Analysis in China

Abstract

According to the 9th latest China Forest Resources Inventory data, Report on Comprehensive Monitoring and Evaluation of China's Forest and Grassland Ecology in 2021 etc., the forest carbon sink’s Gross Ecosystem Product (GEP) of China in 2013 to 2021 are calculated, the GEP model of forest carbon sink accounting is constructed based on the accounting method of GEP. The study results show that China's forest carbon storage and carbon sink increased from 2013 to 2021, with an average annual growth of 2.44% and 5.72% respectively, the value of forest carbon storage and forest carbon sink increased separately by 1.50% and 0.70% annually, the proportion of forest carbon sink GEP in GDP decreased at the same time. The study also shows that during 2013-2021, with forest carbon sink GEP as the dependent variable and forest carbon storage as the independent variable, the accounting model of forest carbon sink GEP is a quadratic equation, the model R2 is 0.805, and the relative error is 8.88%, which has statistical significance and prediction accuracy. The research believes that the future GEP development should reduce the intermediate consumption of forest ecosystem, improve the output efficiency, and strengthen the basic data monitoring and statistics etc..