Evaluating alternative hypotheses behind biodiversity and multifunctionality relationships in the forests of Northeastern China

编号 030034902

推送时间 20220627

研究领域 森林经理 

年份 2022 

类型 期刊 

语种 英语

标题 Evaluating alternative hypotheses behind biodiversity and multifunctionality relationships in the forests of Northeastern China

来源期刊 FOREST ECOSYSTEMS

期 第349期

发表时间 20220312

关键词 Biodiversity and ecosystem multifunctionality;  Biomass;  Functional traits;  Mass ratio effect;  Niche complementarity effect;  Vegetation quantity effect; 

摘要 Background: The importance of biodiversity in maintaining multiple ecosystem functions has been widely accepted. However, the specific mechanisms affecting biodiversity and ecosystem multifunctionality (BEMF) relationships in forests are largely unknown. This is particularly evident for the macroscale of a large forested landscape. Methods: Based on 412 one-tenth hectare field plots distributed over forested areas across northeastern China, we evaluated three alternative hypotheses explaining the relationships between BEMF, namely: niche complementarity, mass ratio, and vegetation quantity effect. We used Rao's quadratic entropy and community weighted mean trait values to quantify forest "biodiversity". These two variables represent two complementary aspects of functional properties, which are in line with niche complementary and mass ratio effects, respectively. Results: Ecosystem multifunctionality was negatively associated with the community weighted mean values of acquisitive traits (a proxy of mass ratio effect). Rao's quadratic entropy (a proxy of niche complementarity) had no relationship with ecosystem multifunctionality. Higher stand biomass greatly increased ecosystem multifunctionality, which is in line with the vegetation quantity effect. Our results confirm that in the temperate forests of northeastern China, the relationship of BEMF was primarily affected by vegetation quantity, followed by mass ratio effects. Conclusions: The results of this study contribute to a better understanding of the main drivers of ecosystem multifunctionality in forest ecosystems. The results of this study provide additional evidence to support the vegetation quantity and mass ratio hypotheses in forest ecosystems.

服务人员 付贺龙

服务院士 唐守正

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