江西广丰森林生态服务及其价值研究

Forest Ecosystem Service and Its Evaluation in Guangfeng County of Jiangxi Province

森林生态服务功能评估是国内外研究的热点之一,依据森林生态服务功能评估标准,采用森林生态系统定位研究网络台站多年连续观测数据和森林资源清查数据及公共数据、实测数据对广丰县森林生态服务功能物质量和价值量及其变化进行了评价,并分析其变化原因。结果表明,广丰县生态效益价值为46.75亿元/a,大于江西省平均值,占全县GDP的36.52%,但除涵养水源功能等以外,其它12项功能总物质量均小于江西省平均值;不同林分类型生态服务功能物质量不同,各项均呈现出马尾松最大,灌木林、经济林、竹林较大,国外松、软阔类较小的明显变化规律,主要由林分面积和林分单位面积生态服务功能物质量不同造成;与全省平均值相比,广丰县单位面积生态效益价值增加了2.48%,达到5.38万元.hm-2.a-1,各林分类型大小顺序为混交林>竹林>灌木林>硬阔类>经济林>马尾松>国外松>软阔类>杉木。

Evaluation of forest ecosystem services is a hot topic,both in China and at abroad.Under the evaluation criteria of forest ecosystem services,years of consecutive observation data from Long Term Ecological Research Stations affiliated to Chinese Forest Ecosystem Research Network（CFERN）,forest resource inventory public data and measured data were applied to carry out evaluation on the physical quantity and value of forests ecosystem services in Guangfeng county of Jiangxi Province.The results showed that the ecosystem services total value was 4.68 billion RMB per year which was more than average of Jiangxi province and account for 36.52% of Gross Domestic Product（GDP） in 2009.Ecosystem services functions other than water conservation functions of the county were less than average of Jiangxi Province.Physical quantity of different forest types was different.Their variation characteristics were that the maximum was masson pine,shrubbery,bamboo forest and economic forest were greater,and exotic pines and soft broadleaved forest were less.Forest area and unit physical quantity was the leading factors of this variation.Unit value of forest ecosystem services of the county was 53.8 thousand RMB per hectare per year.By comparison of average of Jiangxi Province,the unit value of ecosystem services of Chinese pine forests has increased by 2.48%.With different forest types,the unit value of ecosystem services was in the order of mixed forest〉bamboo forest〉shrubbery〉hard broadleaved forest〉economic forest〉masson pineexotic pinessoft broadleaved forest.