There has been an increasing recognition of the crucial role of forests, responsible for sequestering atmospheric CO, as a moral imperative for mitigating the pace of climate change. The complexity of evaluating climate change impacts on forest carbon and water dynamics lies in the diverse acclimations of forests to changing environments. In this study, we assessed two of the most common acclimation traits, namely leaf area index and the maximum rate of carboxylation (), to explore the potential acclimation pathways of under climate change. We used a mechanistic and process-based ecohydrological model applied to a . forest in Mt. Taehwa, South Korea. We conducted numerical investigations into the impacts of (i) Shared Socioeconomic Pathways 2–4.5 (SSP2-4.5) and 5–8.5 (SSP5-8.5), (ii) elevated atmospheric CO and temperature, and (iii) acclimations of leaf area index and on the carbon and water dynamics of . . We found that there was a reduction in net primary productivity (NPP) under the SSP2-4.5 scenario, but not under SSP5-8.5, compared to the baseline, due to an imbalance between increases in atmospheric CO and temperature. A decrease in leaf area index and an increase in of . were expected if acclimations were made to reduce its leaf temperature. Under such acclimation pathways, it would be expected that the well-known CO fertilizer effects on NPP would be attenuated.

中文翻译：

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气候变化下红松林固碳能力的潜在减少

人们越来越认识到森林在封存大气二氧化碳方面的关键作用，这是减缓气候变化速度的道德要求。评估气候变化对森林碳和水动态影响的复杂性在于森林对不断变化的环境的不同适应能力。在本研究中，我们评估了两个最常见的驯化性状，即叶面积指数和最大羧化率（），以探索气候变化下的潜在驯化途径。我们使用了基于机械和过程的生态水文模型应用于。韩国太华山的森林。我们对以下因素的影响进行了数值调查：(i) 共享社会经济路径 2-4.5 (SSP2-4.5) 和 5-8.5 (SSP5-8.5)、(ii) 大气二氧化碳和温度升高，以及 (iii) 叶面积指数的适应以及碳和水的动力学。 。我们发现，与基线相比，在 SSP2-4.5 情景下，净初级生产力 (NPP) 有所下降，但在 SSP5-8.5 情景下，由于大气 CO 和温度增加之间的不平衡，净初级生产力 (NPP) 没有下降。叶面积指数减少， 叶面积指数增加。如果进行驯化以降低其叶温，则预计会出现这种情况。在这种适应途径下，众所周知的二氧化​​碳肥料对核电站的影响预计会减弱。