中亚热带常绿阔叶林土壤有机碳活性组分的季节动态研究
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摘要
常绿阔叶林作为我国亚热带地区最复杂、生产力最高、生物多样性最丰富的地带性植被类型之一,对环境保护、维持全球碳循环和人类持续发展都具有极其重要的作用。本文选择福建省建瓯市万木林自然保护区六种(罗浮栲、浙江桂、米槠、细柄阿丁枫、观光木和沉水樟)天然常绿阔叶林为研究对象,通过野外的实验调查和室内的实验分析系统的估计了不同阔叶林间的土壤有机碳贮量,同时研究了土壤可溶性有机碳和微生物生物量碳两种活性有机碳在土壤剖面中的分布特征、季节动态和相关特征,以及土壤有机碳与土壤可溶性有机碳和土壤微生物生物量碳间的相互关系,以探讨不同阔叶林间土壤有机碳和两种活性有机碳的各种特征和相互区别与联系,为我国亚热带常绿阔叶林的合理利用和碳汇经营提供基础数据。
As one of the most complicated、the highest productivity and the most richest biodiversity zonal vegetation type in subtropical area of china,the evergreen broadleaved forest is of great importance in environmental protection、maintenance the global carbon cycling and human sustainable development.This study has focused on the six natural forest(Castanopsis fabric、Cinnamomum chekiangense、Castanopsis carlesii、Altingia gracilipes、Tsoongiodendron odorum and Cinnamomun micranthum) in Jian'ou of Fujian Province,which are the constructive species of evergreen broadleaved in mid-subtropics of south China.Soil organic carbon storage and related characteristics and seasonal variation of dissolved organic carbon and microbial biomass carbon in soil profile are estimated for six natural forests by combing the laboratory experiment and forest inventories methods.Meanwhile,the relationship between soil organic carbon and two active organic carbon are measured by long-term observations in field so as to determine the difference and connection of soil organic carbon and active organic carbon in different natural forest.This study can provide available data for understanding the carbon balance of evergreen broadleaved forest in mid-subtropics.It can also provide scientific reference for protecting natural forests and mitigating regional climate change.
As one of the most complicated、the highest productivity and the most richest biodiversity zonal vegetation type in subtropical area of china,the evergreen broadleaved forest is of great importance in environmental protection、maintenance the global carbon cycling and human sustainable development.This study has focused on the six natural forest(Castanopsis fabric、Cinnamomum chekiangense、Castanopsis carlesii、Altingia gracilipes、Tsoongiodendron odorum and Cinnamomun micranthum) in Jian'ou of Fujian Province,which are the constructive species of evergreen broadleaved in mid-subtropics of south China.Soil organic carbon storage and related characteristics and seasonal variation of dissolved organic carbon and microbial biomass carbon in soil profile are estimated for six natural forests by combing the laboratory experiment and forest inventories methods.Meanwhile,the relationship between soil organic carbon and two active organic carbon are measured by long-term observations in field so as to determine the difference and connection of soil organic carbon and active organic carbon in different natural forest.This study can provide available data for understanding the carbon balance of evergreen broadleaved forest in mid-subtropics.It can also provide scientific reference for protecting natural forests and mitigating regional climate change.
引文
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