Ecological Factors Driving Tree Diversity across Spatial Scales in Temperate Forests, Northeast China

• DOI: 10.20944/preprints202305.1324.v1
• Publication Date: 2023-05-19T00:58:16Z
• Authors: Yue Gu; Junhui Zhang; Wang Ma; Yue Feng; Leilei Yang; Zhuo Li; Yanshuang Guo; Guoqiang Shi; Shijie Han
• Keywords: Dominance (genetics); Temperate forest

Species diversity has been shown to be influenced by environmental factors, but the mechanism underlying their relationship remains unclear across spatial scales. Based on field investigation data collected from 3,077 sample plots in temperate forest ecosystems, we compared tree species richness, evenness and dominance at 10 km × km, 30 90 Then, detected scale dependence of changes composition climate, topography structure using variation partitioning quantified contribution with gradient boosted models (GBMs) fitted relationships. The magnitude significantly increased scale. Ecological factors jointly accounted for 24.3%, 26.5% 38.5% three scales, respectively. Annual mean temperature had a strong impact peaked an intermediate Tree upper lower limits. richness obviously annual precipitation multiple scales decreased sunshine duration large elevation diameter breast height small hump ecological Furthermore, different exert various controls representing comprehensive regulating diversity.