Unravelling the combined effects of drought and nitrogen addition on carbon assimilation and reserves in Korean pine saplings.

ABSTRACT: Climate change profoundly impacts the physiological processes and adaptation strategies of plants. However, the physiological mechanisms of coniferous species responding and adapting to combined drought and nitrogen (N) addition remain unclear. Here, based on 2-year multi-level N addition and drought experiments, we investigated the responses of carbon assimilation (net photosynthetic rate A _n, stomatal conductance g _s and intrinsic water use efficiency WUE_i) and carbon reserves (non-structural carbohydrates, NSC) of 7-year-old Korean pine (Pinus koraiensis) saplings. Our results showed that: (1) Drought decreased A _n and g _s, while N addition increased A _n and decreased g

SUBMITTER: Tian J 

PROVIDER: S-EPMC12034718 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature