Aim

We estimated how seasonality in conjunction with key climatic variables affects morphological and physiological plant functional traits (PFTs) and soil essential (micro and macro) nutrients in oak, pine, and mixed forests.

Method

The different PFTs were tested using several laboratory methods and using the portable photosynthesis system Li-COR 6400 XT, Lincoln NE, USA. Likewise, some chemical traits and soil nutrients were analyzed by using CHNS analyzer.

Results

In this study, physiological traits such as CO₂ assimilation rate, stomatal conductance and transpiration rate were significantly higher in the rainy season followed by summer and winter seasons. Among the different forest land uses, physiological traits and resource use efficiency have been significantly higher in oak forest (OF) compared to the mixed forest (MF) and pine forest (PF). Likewise, the concentration of macro–micro nutrients was also recorded higher during the rainy season. The concentration of macro–micro nutrients was higher in OF than in MF and PF in different forest land uses.

Conclusion

Changes in PFTs ultimately affect the ecosystem services imparted by the different forests. Such changes lead to the local adaptation of these forests through the interaction between PFTs and soil nutrients.

中文翻译：

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Garhwal喜马拉雅山天然林在季节性条件下必需植物养分下植物功能性状的调控

目标

我们估计季节性与关键气候变量如何影响橡树，松树和混交林的形态和生理植物功能性状（PFT）和土壤必需（微量和宏观）养分。

方法

使用几种实验室方法以及便携式光合作用系统Li-COR 6400 XT（美国林肯NE，美国）对不同的PFT进行了测试。同样，使用CHNS分析仪分析了一些化学特性和土壤养分。

结果

在这项研究中，在雨季之后是夏季和冬季，CO ₂同化率，气孔导度和蒸腾速率等生理特征明显更高。在不同的林地用途中，橡树林（OF）的生理特征和资源利用效率比混交林（MF）和松林（PF）高得多。同样，在雨季，宏观-微量营养素的浓度也更高。在不同的林地用途中，OF中的微量元素养分含量高于MF和PF。

结论

PFT的变化最终会影响不同森林所赋予的生态系统服务。这些变化通过PFT和土壤养分之间的相互作用导致这些森林的局部适应。