Abstract

Abstracts The spatial differentiation of plant functional traits reflects the survival strategies of plants to adapt to climate change. However, the mechanisms that guide this phenomenon, especially along latitude gradients, remain unclear. Leaf traits data, namely specific leaf area, leaf nitrogen content, leaf phosphorus content and leaf dry matter content in northeast China along the latitude was used to identify potential underlying climate and soil drivers of latitudinal gradients in plant traits. (1) Leaf traits of all life forms showed a wide variation across the study locations in northeastern China and the variation was strongly correlated with latitude. The latitudinal interpretation of leaf N and P content spatial differentiation is higher than other functional traits. (2)The latitudinal differences of functional traits were significantly correlated with climatic factors. With the increase of annual average temperature and annual average precipitation (MAT and MAP), specific leaf area (SLA) of leaves increased significantly, while leaf dry matter content (LDMC) decreased significantly (P

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