楚雄州双柏县国有林场森林可持续经营试点模式探讨OA

Under the backdrop of the"dual carbon"goal,the Pinus yunnanensis,as a key carbon sink tree species in the southwestern region,the innovation of its business model is crucial for achieving multiple benefits of the forest.The five typical business models of the Pinus yunnanensis are systematically evaluated:① The artificial pure Pinus yunnanensis forest with large-diameter timber cultivation and forest-fungus composite business model,through the cultivation of Wolfiporia cocos under trees,realizes"short-term sustenance for long-term growth",with carbon storage increasing by 22%to 28%;② The combined multi-functional model of Pinus yunnanensis forest and fungi utilizes the stump cultivation to increase the carbon sink value by 1,500 yuan/hm²;③ The structured business model of degraded pure artificial Pinus yunnanensis forest through coniferous and broad-leaved mixed planting increases the carbon sink rate by 0.8 to 1.2 t/(hm²·a);④ The artificial pure Pinus yunnanensis forest with large-diameter timber cultivation business model forms an optimized stand of 300 to 450 trees/hm²,with timber volume reaching 300 m³/hm²;⑤ The intensive business model of high-density aerial seeding of Pinus yunnanensis young forest increases the efficiency of forest carbon accumulation by 30%to 50%through graded thinning.The study shows that different models have significant differences in carbon sink enhancement,biodiversity maintenance,and economic output.It is suggested to establish an operation technology system based on full life cycle carbon accounting,optimize mode configuration through the"space substitution-time coupling"strategy,in order to provide reference for the carbon neutral path of Pinus artificial forests.