检索结果-南通市图书馆

Effects of stand density on soil respiration and labile organic carbon in different aged Larix principis-rupprechtii plantations

引用

Ecological Processes 2021年第1期10卷 582-596页

作者： Tairui Liu Daoli Peng Zhijie Tan Jinping Guo Yunxiang Zhang College of Forestry Beijing Forestry UniversityNo.35 Tsinghua East RoadHaidian DistrictBeijing 100083People’s Republic of China. Lvliang Bureau of Planning and Natural Resources Lüliang 033000People’s Republic of China. College of Forestry Shanxi Agricultural UniversityJingzhong 030801People’s Republic of China

Background:The carbon pools of forest soils play a vital role in global carbon sequestration and emissions.Forest management can regulate the sequestration and output of forest soil carbon pools to a certain extent;however,the kinetics of the effects of forest density on soil carbon pools require further investigation.Methods:We established sample plots with stand density gradients in three different aged Larix principis-rupprechtii plantations and quantified the soil respiration,soil organic carbon(SOC),soil dissolved organic carbon(DOC),microbial biomass carbon(MBC),light fraction organic carbon(LFOC),and readily oxidized carbon(ROC).Results and conclusions:During the growth and development of plantations,stand density is an essential factor that impacts soil respiration and its associated elements.Moderate density was observed to promote both the soil and heterotrophic respiration rates and the sequestration of MBC and LFOC,whereas it inhibited the sequestration of ROC.The soil,heterotrophic,and autotrophic respiration rates of older forest stands were relatively rapid,whereas the contents of SOC,MBC,LFOC,DOC,and ROC were higher and more sensitive to changes in stand density.The MBC,LFOC,and ROC in soil labile organic carbon were closely related to both the soil and heterotrophic respiration,but not the SOC.Among them,the LFOC and MBC played the roles of“warehouse”and“tool”and were significantly correlated with soil and heterotrophic respiration.The ROC,as a“raw material”,exhibited a significantly negative correlation with the soil and heterotrophic respiration.When the soil and heterotrophic respiration rates were rapid,the ROC content in the soil maintained the low level of a“dynamically stabilized”state.The stand density regulated heterotrophic respiration by affecting the soil labile organic carbon,which provided an essential path for the stand density to regulate soil respiration.

关键词： Stand density soil respiration soil organic carbon soil labile organic carbon Influence mechanism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：