雷州半岛桉树无性系生态调节服务价值核算

Value Accountingfor Ecological Regulation Service of EucalyptusClonesin Leizhou Peninsula

以雷州半岛4种桉树无性系作为研究对象,采用分布式测算评估体系方法从4个功能8个指标系统评估桉树不同无性系调节服务价值并对森林生态系统当期所提供的服务流量进行核算,以期为当地森林生态价值的实现提供一定参考。结果表明:2023年雷州半岛桉树不同无性系调节服务总价值为3.32×10^(9)元·年^(-1)。涵养水源、固碳释氧、净化大气环境、森林防护价值分别为1.22×10^(9)、1.93×10^(9)、1.16×10^(8)、5.79×10^(7)元·年^(-1),分别占比为36.80%、57.95%、3.50%、1.75%,固碳释氧及涵养水源价值是雷州半岛桉树不同无性系调节服务的主要价值。尾细桉、尾巨桉、尾叶桉、巨尾桉调节服务价值量分别为2.30×10^(9)、8.35×10^(8)、9.23×10^(7)、9.27×10^(7)元·年^(-1),分别占比为69.31%、25.13%、2.78%、2.79%。

Taking 4 eucalypt clones in the Leizhou Peninsula as research objects,the distributed measurement and evaluation system method was used to evaluate the regulation service value of the different clones for 4 functions and 8 index systems.Also,the service flow provided by the forest ecosystem of each clone was calculated in the current period,in order to provide a reference for the realization of local forest ecological values.The results showed that the total value of regulation services of different clones of eucalyptus in Leizhou Peninsula in 2023 was 3.32×10^(9) yuan·year^(-1).The values of water conservation,carbon fixation and oxygen release,air purification and forest protection were 1.22×10^(9),1.93×10^(9),1.16×10^(8) and 5.79×10^(7) yuan·year^(-1),accounting for 36.80%,57.95%,3.50%and 1.75%,respectively.The value of carbon fixation,oxygen release and water conservation are the main factors giving value to the regulation services of different eucalypt clones in Leizhou Peninsula.The value of the adjustment service of E.urophylla×E.tereticornis,E.urophylla×E.grandis,E.urophylla and E.grandis×E.urophylla were 2.30×10^(9),8.35×10^(8),9.23×10^(7) and 9.27×10^(7) yuan·year^(-1),accounting for 69.31%,25.13%,2.78%and 2.79%,respectively.