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木兰林管局森林土壤碳密度的研究 被引量:2
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作者 高红真 王超 尤立权 《河北林业科技》 2011年第2期8-10,共3页
通过土壤剖面调查与室内土壤有机碳测定,对木兰林管局5种主要林分类型的土壤层厚度、容重、有机碳含量与碳密度的变化规律进行了分析。结果表明:土壤表层0~40cm的有机碳含量较高,应作为衡量土壤碳密度差异的重要指标;不同植被类型的土... 通过土壤剖面调查与室内土壤有机碳测定,对木兰林管局5种主要林分类型的土壤层厚度、容重、有机碳含量与碳密度的变化规律进行了分析。结果表明:土壤表层0~40cm的有机碳含量较高,应作为衡量土壤碳密度差异的重要指标;不同植被类型的土壤碳密度排序为山杨林>落叶松林>白桦林>蒙古栎林>油松林;天然林转变为人工林后土壤碳密度降低11%以上;不同土壤类型碳密度表现为草甸土>棕壤>褐土>风沙土。 展开更多
关键词 森林土壤碳汇 土壤密度 土壤有机含量 木兰林管局
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Preliminary Estimation of Soil Carbon Sequestration of China’s Forests during 1999–2008 被引量:4
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作者 WANG Bin LIU Moucheng ZHOU Zhichun 《Journal of Resources and Ecology》 CSCD 2022年第1期17-26,共10页
The National Forest Inventory(NFI)is an important resource for estimating the national carbon balance(These data were unpublished data,and we could only obtain the data before 2008 through data search by now).Based on... The National Forest Inventory(NFI)is an important resource for estimating the national carbon balance(These data were unpublished data,and we could only obtain the data before 2008 through data search by now).Based on the data from sample plots,the literature,and NFI,as well as the relationships between volume,biomass,annual litterfall and soil respiration of different forest types,the net ecosystem production(NEP),changes in forest biomass carbon storage(△Cbiomass)and non-respiratory losses(NR)of China’s forests during 1999-2008 were estimated,and the forest soil carbon sequestration(△Csoil)was assessed according to the carbon balance principle of the forest ecosystem(△Csoil=NEP-NR-△Cbiomass).The results showed that the total NEP,△Cbiomass,NR and△Csoil values for China’s forests were 157.530,48.704,31.033 and 77.793 Tg C yr^(-1) respectively,and average NEP,△Cbiomass,NR,and△Csoil values were 101.247,31.303,19.945 and 49.999 g C m^(-2) yr^(-1) respectively.There were large spatial differences in forest soil carbon sequestration in different parts of China.The forest soil in Jiangxi,Hunan,Zhejiang,Fujian,Anhui,Shanxi,Shaanxi,Guangxi and Liaoning served as carbon sources and the carbon released was about 25.507 Tg C yr^(-1).The other 22 provinces served as carbon sinks and the average carbon sequestration by forest soil came to 103.300 Tg C yr^(-1).This research established a method for evaluating soil carbon sequestration by China’s forests based on the NFI,which is a useful supplement to current statistical data-based studies on the forest ecosystem carbon cycle,and can promote comparable studies on forest soil carbon sequestration with consistent research methods at the regional scale. 展开更多
关键词 carbon balance forest ecosystem national forest inventory soil carbon sequestration
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