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利用宁夏自治区第三次至第七次森林资源普查数据及林业生态建设工程数据,采用材积源生物量法分析研究了宁夏森林及林业生态建设工程的固碳能力和潜力。结果表明:“十五”和“十一五”林业生态建设与保护工程实施期间,宁夏自治区森林主要面积、蓄积量、森林总生物量和碳贮量等均呈增加趋势。林业生态建设与保护工程增加森林面积、天然林林分面积和人工林林分面积分别为18.30万hm2、0.88万hm2、5.76万hm2;增加活立木蓄积量、林分蓄积量分别为300.29万m3、267.48万m3,其中人工林林分蓄积量增加为207.24万m3。“十五”和“十一五”期间,宁夏林业生态建设与保护工程共增加森林碳贮量124.99万t,其中三北防护林工程、天然林保护工程和经济林工程合计增加森林碳贮量91.45万t。预计到2020年,宁夏森林总碳贮量将达到430.52万t。
Based on the data from the third to the seventh forest resources census of Ningxia Autonomous Region and the data of forestry eco-construction project, the biomass-based biomass of Ningxia Hui Autonomous Region was used to analyze the carbon sequestration capacity and potential of forest and forestry eco-construction projects in Ningxia. The results showed that the main forest area, stock volume, total forest biomass and carbon storage in Ningxia Autonomous Region all showed an increasing trend during the “Eleventh Five-year” and “Eleventh Five-year” forestry ecological construction and protection projects. Forestry ecological construction and protection project to increase the forest area, natural forest stand area and plantation forest stand area were 183,000 hm2, 88,800 hm2, 57,600 hm2; increase the live stump volume, stand volume were 300.29 million m3 And 2.6748 million m3, of which the plantation stock volume increased to 2.0724 million m3. During the “Eleventh Five-Year Plan” and “Eleventh Five-Year Plan”, total forest carbon storage in Ningxia increased by 1,224,900 tons, of which, the Three-North Shelter Forest Project, natural forest protection project and economic forest project increased forest carbon The storage capacity of 914,500 t. It is estimated that the total carbon storage of forests in Ningxia will reach 4,305,200 tons by 2020.