北京市森林碳汇能力评价  

Evaluation of forest carbon sequestration capacity in Beijing

作　　者：任云卯 温志勇[2] 王敏男 李帆 贾忠奎[5] Ren Yunmao;Wen Zhiyong;Wang Minnan;Li Fan;Jia Zhongkui(Beijing Xishan Experimental Forest Farm Management Office,Beijing 100093,China;Beijing Huairou District Landscape Greening Bureau,Beijing 101400,China;Beijing Miyun District Landscape and Greening Bureau,Beijing 101599,China;Ningxia Hui Autonomous Region Forestry Investigation and Planning Institute,Yinchuan 75000,Ningxia,China;Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China)

机构地区：[1]北京市西山试验林场管理处,北京100093 [2]北京市怀柔区园林绿化局,北京101400 [3]北京市密云区园林绿化局,北京101599 [4]宁夏回族自治区林业调查规划院,宁夏银川750000 [5]北京林业大学森林培育与保护教育部重点实验室,北京100083

出　　处：《北京林业大学学报》2023年第12期108-119,共12页Journal of Beijing Forestry University

基　　金：国家自然科学基金项目(31870387)。

摘　　要：【目的】根据第8次园林绿化植物普查中森林资源二类调查数据,对北京市森林碳汇能力进行评估,为该市森林资源的科学管理提供理论依据。【方法】本研究采取森林蓄积量扩展法,计算北京市森林整体碳储量、碳密度及其变化,并采用造林成本法和碳税法对其碳储量经济价值进行评估。【结果】(1)北京市森林总碳储量为1934.59万t,碳密度为32.35 t/hm^(2),各区域中密云区、延庆区、顺义区的碳储量较大,占比分别为13.79%、12.73%和11.40%,而碳密度较大的为顺义区、大兴区、通州区;平原和山地的碳密度均表现为阔叶林>混交林>针叶林,且平原地区碳密度约是山地的3.3倍;山地和平原地区的碳储量均以阔叶树为主,且平原地区表现出更强的森林固碳能力;防护林是森林碳储量贡献的主体,其中水土保持林碳储量最多,为414.15万t,而碳密度最大为农田防护林(175.23 t/hm^(2));优势树种碳储量大小排列为:其他杨树>栎树>油松>其他阔叶树>侧柏>刺槐>桦树>华北落叶松>山杨,碳密度大小排列为:其他杨树>桦树>华北落叶松>山杨>油松>刺槐>栎树>其他阔叶树>侧柏;不同起源中碳储量和碳密度均表现为:人工林>飞播林>天然林;龄组中碳储量大小:中龄林>幼龄林>成熟林>近熟林>过熟林,碳密度的总体规律为随着龄级的增大而增大。(2)从第1次到第8次森林资源调查,森林碳储量和碳密度持续增长;林种中特种用途林增长率最高,碳密度最大;华北落叶松、山杨的碳储量先增加再减少,而刺槐、桦树呈现先减少后增加的趋势,其他树种都呈增加趋势,而油松、华北落叶松、山杨的碳密度先增后减,侧柏、柞树、桦树先减后增,刺槐、阔叶树持续减小,杨树持续增大;天然林和人工林都呈增长趋势。(3)依据造林成本法和碳税法的不同碳价格估算,北京市森林碳储量经济价值在54.14×10^(8)~232.15×10^(8)元之间,碳�[Objective]Based on the existing survey data from the 8th Landscape Plant Census of Forest Resources TypeⅡsurvey data,the forest carbon sink capacity of Beijing was assessed to provide a theoretical basis for the scientific management of forest resources in the city.[Method]In this study,we adopted the forest stock expansion method to calculate the overall carbon stock,carbon density and changes in Beijing’s forests,and use the afforestation cost method and carbon tax method to assess the economic value of their carbon stocks.[Result](1)The total carbon stock of the total forest in Beijing was 1934.59×10^(4)t,and the carbon density was 32.35 t/ha,among the regions,Miyun District,Yanqing District and Shunyi District had larger carbon stocks,accounting for 13.79%,12.73%and 11.40%,respectively,while those with higher carbon density were Shunyi District,Daxing District and Tongzhou District;the carbon density of both plains and mountains showed broadleaf forests>mixed forests>coniferous forests,and the carbon density of forests in plains was about 3.3 times higher than that in mountains;the carbon stocks in both mountains and plains were dominated by broadleaf trees;protection forests were the main contributors to the forest carbon stock.The carbon stock of protection forest was the main contributor to forest stock,among which soil and water conservation forest had the largest carbon stock of 414.15×10^(4)t,while the carbon density of farmland protection forest was the largest at 175.23 t/ha;the carbon stock of dominant species was ranked as follows:other Populus spp.>Quercus spp.>Pinus tabuliformis>broadleaf tree>Platycladus orientalis>Robinia pseudoacacia>Betula spp.>Larix principis-rupprechtii>Populus davidiana,the carbon density was ranked as follows:other Populus spp.>Betula spp.>Larix principis-rupprechtii>Populus davidiana>Pinus tabuliformis>Robinia pseudoacacia>Quercus spp.>broadleaf tree>Platycladus orientalis;the carbon stock and carbon density in different origins were:planted forests>flycasting fore

关 键 词：北京市 碳汇 森林碳储量 碳密度 

分 类 号：S758[农业科学—森林经理学]