The Influence of Tree Structural and Species Diversity on Temperate Forest Productivity and Stability in Korea

编号 010021601

推送时间 20191209

研究领域 森林生态 

年份 2019 

类型 期刊 

语种 英语

标题 The Influence of Tree Structural and Species Diversity on Temperate Forest Productivity and Stability in Korea

来源期刊 Forests

期 第216期

发表时间 20191206

关键词 temperate forest;  species diversity;  structural diversity;  basal area increment;  stability;  structural equation model; 

摘要 Research Highlights: Using a long-term dataset on temperate forests in South Korea, we established the interrelationships between tree species and structural diversity and forest productivity and stability, and identified a strong, positive effect of structural diversity, rather than tree species diversity, on productivity and stability. Background and Objectives: Globally, species diversity is positively related with forest productivity. However, temperate forests often show a negative or neutral relationship. In those forests, structural diversity, instead of tree species diversity, could control the forest function. Materials and Methods: This study tested the effects of tree species and structural diversity on temperate forest productivity. The basal area increment and relative changes in stand density were used as proxies for forest productivity and stability, respectively. Results: Here we show that structural diversity, but not species diversity, had a significant, positive effect on productivity, whereas species diversity had a negative effect, despite a positive effect on diversity. Structural diversity also promoted fewer changes in stand density between two periods, whereas species diversity showed no such relation. Structurally diverse forests might use resources efficiently through increased canopy complexity due to canopy plasticity. Conclusions: These results indicate reported species diversity effects could be related to structural diversity. They also highlight the importance of managing structurally diverse forests to improve productivity and stability in stand density, which may promote sustainability of forests.

服务人员 王璐

PDF文件 浏览全文