河北省森林生态系统固碳释氧服务功能价值评估

Evaluation on Forest Ecosystem Services of Carbon Fixation and Oxygen Release in Hebei Province

基于河北省森林生态系统的长期、连续定位观测,采用河北省2005-2011年森林资源清查数据,主要优势树种净生产力实测获得,其他树种采用参考文献法或材积源驱动生物量法获得,分析了河北省森林生态系统固碳释氧物质量,采用最新国家标准(LY/T 1721—2008)规定的方法估算森林生态系统固碳释氧服务功能价值量。结果表明,(1)河北省森林生态系统年固碳总量为1 575.03×10~4t/a,释氧总量为4 216.66×10~4t/a;年固碳释氧总价值量为610.66×10~8元/a,其中固碳价值量为189.00×10~8元/a,释氧价值量为421.66×10~8元/a。(2)不同林分类型单位面积固碳释氧量从大到小顺序为,栽培杨林﹥刺槐林﹥经济林﹥灌木林﹥油松林﹥落叶松林﹥栎林﹥桦树林﹥疏林﹥柏类林﹥樟子松林﹥云杉林。(3)河北省各市单位面积固碳释氧功能分布总体表现为北部高,南部低,东部高,西部低;大小顺序为:秦皇岛市﹥张家口市﹥沧州市﹥承德市﹥石家庄市﹥唐山市﹥保定市﹥廊坊市﹥邢台市﹥邯郸市﹥衡水市。(4)落叶松林和油松林分龄级测得的固碳释氧总物质量较不分龄级高,因此文中对河北森林固碳释氧服务功能价值的估算由于未能按照不同林龄分别计算,存在一定误差。

Based on data from four sources: long-term and continuous observations data of forest ecosystems,second-class inventory of Hebei forest resources from 2005-2011,productivity of main dominant trees in Hebei Province got from field survey,productivity of other trees got from references( researches of high schools,academics and institute) and the method of volume-derived biomass,it was analyzed and estimated the volume and evaluation of carbon fixation and oxygen release of forest ecosystem in Hebei Province,in according to the latest national standard( LY/T 1721-2008). Followings are the main results:( 1) the annual carbon fixation in forest ecosystem of Hebei Provence was estimated as 1 575. 03×10~4t/a,with 4 216. 60×10~4t/a oxygen released per year. The service value for annual carbon fixation and oxygen release was estimated as 610. 66×10~8yuan/a,including carbon fixation of 189. 00×10~8yuan/a and oxygen release of 421. 66×10~8yuan/a.( 2) The values of carbon fixation and oxygen release by different forest types were estimated as follows: Populus ﹥ Robinia pseudoacacia ﹥ Economic forestry ﹥ Scrub ﹥ Pinus tabulaeformis ﹥ Larix gmelinii ﹥ Quercus ﹥ Betula ﹥ Woodlands ﹥ Cupressus ﹥ Pinus sylvestris Linn. var. mongolica ﹥ Picea.( 3) The performance of ecological function per unit in northern Hebei was clearly better than that in the south; meanwhile,the east was better than the west. In all regions,Qinhuangdao﹥ Zhangjiakou ﹥ Cangzhou ﹥ Chengde ﹥ Shijiazhuang ﹥ Tangshan ﹥ Baoding ﹥ Langfang ﹥ Xingtai ﹥ Handan ﹥ Hengshui.( 4) The volume of C fixation and O_2 release of Larix gmelinii forest and Pinus tabulaeformis forest measured by at age class was higher than that measured regardless of stand age. So some error exists in this study and more in-depth and detailed studies are necessary because the estimated carbon fixation and oxygen release values for different trees in Hebei were not classified by stand age.