论文部分内容阅读
依据林业行业标准《森林生态系统服务功能评估规范》(LY/T1721—2008),利用江西省第五、第六次森林资源清查资料、森林生态站长期观测数据、公开发表文献数据及社会公共数据,对江西省“九五”和“十五”期间阔叶林生态系统服务功能价值进行了动态分析。结果表明:江西省阔叶林在“九五”期间生态系统服务功能年均总价值为1880亿元,单位面积价值为11.1万元·hm-2·a-1;“十五”期间生态系统服务功能年均总价值为2010亿元,单位面积价值为11.0万元·hm-2·a-1;年均总价值增长了6.91%,但单位面积价值减少了0.95%;其中,生物多样性保护和固碳释氧价值及其在总价值中所占比重增加最快;江西省阔叶林净生产力增长缓慢,致使2个时期6项服务功能价值大小排列顺序略有差异,但涵养水源、生物多样性保护和固碳释氧价值等前3项功能约占年均总价值的95%;在确保森林质量的同时,通过阔叶林保护和恢复、低效残次林改造及退耕还林工程等方式增加阔叶林面积,是提高阔叶林生态系统服务功能总价值的有效方式。
According to Forestry Industry Standard “Assessment of Forest Ecosystem Services Function” (LY / T1721-2008), using the fifth and sixth forest resource inventory data of Jiangxi Province and the long-term observation data of forest ecological station, published the literature data and social public data , Dynamic analysis of the service value of broad-leaved forest ecosystem services in Jiangxi Province during the “Ninth Five-Year Plan” and “Fifteen-Year Plan” period was conducted. The results showed that the annual average value of ecosystem services of broad-leaved forests in Jiangxi Province during the “Ninth Five-Year Plan” period was 188 billion yuan, with the unit area value of 111,000 yuan · hm-2 · a-1; During the period, the annual average value of ecosystem services was 1.01 billion yuan and the unit area value was 110,000 yuan · hm-2 · a-1. The annual average value increased by 6.91%, but the unit area value decreased by 0.95%. Among them, , The value of biodiversity conservation and carbon sequestration and oxygen release, and its share in total value increased the fastest; the net productivity of broad-leaved forests in Jiangxi Province increased slowly, resulting in a slight difference in the order of the value of the six service functions in the two periods, However, the first three functions such as conservation of water resources, biodiversity conservation and carbon sequestration and oxygen release value accounts for about 95% of the annual average value. While ensuring the quality of forests, the inefficient secondary forests are rehabilitated through the protection and restoration of broad-leaved forests And returning farmland to forest project to increase the area of broad-leaved forest is an effective way to improve the total value of the service function of broad-leaved forest ecosystem.