不同经营措施对杉木人工林土壤碳库的影响  

Effects of Different Management Practices on Soil Organic Carbon Pool under Chinese Fir Plantation

作　　者：张剑[1,2] 汪思龙[2] 隋艳晖[3] 王清奎[2] 

机构地区：[1]山东大学威海分校,山东威海264209 [2]中国科学院沈阳应用生态研究所,辽宁沈阳110014 [3]威海职业学院,山东威海264210

出　　处：《资源开发与市场》2010年第9期826-830,共5页Resource Development & Market

基　　金：国家自然科学基金面上项目(编号:30470303);中国科学院知识创新工程重要方向项目(编号:KZCX2-YW-405);山东大学威海分校人才工程项目

摘　　要：森林土壤有机碳在陆地生态系统碳循环中发挥着关键作用。以我国亚热带杉木人工林为研究对象,以常绿阔叶林为对照,分析比较了不同经营措施对土壤碳矿化、微生物特征、碳库管理指数的影响。结果表明,与连栽杉木纯林相比,杉木火力楠混交模式和轮栽模式均显著增加了土壤微生物量碳含量、土壤微生物熵、易氧化有机碳和碳库管理指数,提高了土壤微生物对底物的利用效率,土壤易氧化有机碳可作为反映土壤碳库质量的有效指标。Soil Organic Carbon（SOC） in forest played a crucial role in carbon cycling of terrestrial ecosystems,which was a hot issues in the researches on global climate changes.Chinese fir（Cunninghamia lanceolata） plantation was the typical regional vegetation in subtropical China at present.In this study,evergreen broad-leaved forest was used as the control,and the effect of different management practices on carbon mineralization,soil microbial characteristics and carbon pool management index（CMI） in Chinese fir plantation was analyzed.The results showed that with the comparison of pure Chinese fir,mixed mode and rotation mode of Chinese fir and Michelia macclurei significantly increased the content of soil microbial biomass carbon（MBC）,microbial quotient,easily oxidized organic carbon and CMI,improved the efficiency of substrate utilization by soil microbial community,and achieved the sustainable management of Chinese fir plantation ecosystem.Easily oxidized organic carbon could be used as an effective indicator of soil carbon pool quality.

关 键 词：杉木人工林 土壤有机碳 经营措施 土壤碳库管理指数 碳矿化 土壤微生物 

分 类 号：X144[环境科学与工程—环境科学]