Small-Scale Forest Structure Influences Spatial Variability of Belowground Carbon Fluxes in A Mature Mediterranean Beech Forest

编号 010022903

推送时间 20200309

研究领域 森林生态 

年份 2020 

类型 期刊 

语种 英语

标题 Small-Scale Forest Structure Influences Spatial Variability of Belowground Carbon Fluxes in A Mature Mediterranean Beech Forest

来源期刊 forest

期 第229期

发表时间 20200226

关键词 Fagus sylvatica L.;  net primary production;  fine roots;  drought;  soil CO2 efflux; 

摘要 The tree belowground compartment, especially fine roots, plays a relevant role in the forest ecosystem carbon (C) cycle, contributing largely to soil CO2 efflux (SR) and to net primary production (NPP). Beyond the well-known role of environmental drivers on fine root production (FRP) and SR, other determinants such as forest structure are still poorly understood. We investigated spatial variability of FRP, SR, forest structural traits, and their reciprocal interactions in a mature beech forest in the Mediterranean mountains. In the year of study, FRP resulted in the main component of NPP and explained about 70% of spatial variability of SR. Moreover, FRP was strictly driven by leaf area index (LAI) and soil water content (SWC). These results suggest a framework of close interactions between structural and functional forest features at the local scale to optimize C source–sink relationships under climate variability in a Mediterranean mature beech forest.

服务人员 王璐

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