三峡库区森林生态系统服务功能评估

Evaluation of Forest Ecosystem Services in Three Gorges Reservoir Area

依据全国第八次森林资源清查数据和国内外对三峡库区森林生态系统服务功能的研究成果,选择评估指标,以固定样地为基本计算单位,分10个实物量和13个价值量评估三峡库区森林生态服务功能。此外,评估第七次森林资源清查数据,探讨主要指标动态变化情况,以期为林业生产经营提供依据。结果表明:三峡库区生态服务功能总价值4 314.11亿元。其中:水源涵养2 650.58亿元,固土保肥91.31亿元,固碳释氧549.28亿元;积累营养物质31.87亿元,净化大气环境95.56亿元,生物多样性保护效益477亿元,森林旅游效益418.51亿元;涵养水源、固土保肥、积累营养物质、净化大气环境、生物多样性保护等与第七次森林资源清查数据相比都有不同程度的增加。

With the Eighth National Inventory of Forest Resources and the achievements of the Three Gorges Reservoir Area for-est ecosystem services, we selected evaluation indicators with fixed sample for the basic unit, and evaluated ten-point physical quantities and 13-point magnitude of value of forest ecosystem services in the Three Gorges Reservoir Area.We e-valuated the seventh national inventory data to explore the dynamic change, and provide the basis for forestry production. The total benefits of forest ecosystem services 431.411 billion Yuan in Three Gorges Reservoir Area, including water re-sources of 265.058 billion, solid soil and fertilizer of 9.131 billion the forest fixing carbon and releasing oxygen of 5.492 8 billion, the accumulation of nutrients of 3.187 billion, the air purification of 9.556 billion, the forest of 47.7 billion for conservation of biodiversity, and 41.851 billion for forest tour.Water resources, solid soil and fertilizer, accumulation of nutrients, air purification, conservation of biodiversity, and forest tour are with different degrees of increase.