Clear-cutting impacts nutrient, carbon and water exchange parameters in woody plants in an east Fennoscandian pine forest
| Autor: | Yulia Tkachenko, Vladislava Pridacha, Vera Timofeeva, Elena V. Novichonok, Olga Bakhmet, T. A. Sazonova, Alexey N. Pekkoev, Alexander Olchev, Denis E. Semin |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Canopy Alnus incana Tree canopy Stomatal conductance biology Taiga Scots pine Soil Science 04 agricultural and veterinary sciences Plant Science biology.organism_classification 01 natural sciences Deciduous Agronomy 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science 010606 plant biology & botany Transpiration |
| Zdroj: | Plant and Soil. 466:317-336 |
| ISSN: | 1573-5036 0032-079X |
| DOI: | 10.1007/s11104-021-05058-w |
| Popis: | Clear-cut logging currently is a key factor transforming forest communities in many boreal regions. The dynamics of biogeochemical processes taking place in clear-cuts makes them a good model for studying the response of plants to changes in environmental conditions. This study aimed to assess the response of nutrient, carbon and water exchange parameters in coniferous and deciduous plants after clear-cut forest harvesting. The effects of environmental factors on the functional traits of regrowing trees in Scots pine (Pinus sylvestris L.), silver birch (Betula pendula Roth), aspen (Populus tremula L.) and grey alder (Alnus incana (L.) Moench) were analysed during four growing seasons (2016–2019) in a clear-cut site and under the canopy of an undisturbed bilberry-type pine forest in the middle taiga of Karelia, Northwest Russia. Unidirectional changes were observed in the specific nutrient content, specific leaf area, biological macronutrient absorption capacity, stomatal conductance, and rates of photosynthesis and transpiration in the different tree species along a gradient of environmental factors. In most cases, the nutrient concentrations and N:P:K ratio were consistent in all species as environmental conditions changed. Species-specific responses were observed for the N:P:K and K:Ca:Mg ratios, photosynthetic water use and nitrogen use efficiency. Contrasting environmental conditions in the clear-cut and under forest canopy most significantly affect plant capacity to absorb nitrogen. Variation in functional traits in the coniferous and deciduous species reflects their specific resource-use strategies in a heterogeneous environment and, hence, indicates the different adaptation potentials for various plant species. |
| Databáze: | OpenAIRE |
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