SIBERIAN FIR (ABIES SIBIRICA) STATE AND СHEMICAL ELEMENT ALLOCATION IN TREE CROWN IN FOREST ECOSYSTEMS OF PROTECTED AREAS IN SOUTH OF KRASNOYARSK REGION (RUSSIA)
Journal Title: Nature Conservation Research. Заповедная наука - Year 2018, Vol 3, Issue 0
Abstract
Chemical element localisation was studied in Siberian fir tree crowns under different living conditions in the dark-forest biocoenosis of the Eastern Sayan. Research was conducted in the State Nature Reserve «Stolby» situated on the north-western spurs of the Eastern Sayan, and in the Bolshe-Kemchugskiy sanctuary situated in the Bolshoy Kemchug river basin. Siberian fir is characterised by a longitudinal gradient of sexualisation due to crown differentiation into four tiers: female generative, bisexual, male generative and asexual. The living status of the biocoenosis varied from 57.7 to 99.5. Drying of fir trees took place according to the «under the top» type characteristic for this species. Chlorosis, needle necrosis, growth depression and shoot drying are confined to the male generative and bisexual shoots, transitional from female to male. Regression analysis demonstrated that Siberian fir tree drying was accompanied by intensive damage by Melampsorella cerastii. In spite of morphological disturbances, the content of most elements in tree needles does not exceed the normal level in vegetation. Element localisation (N, Ca, S, Mg, Al, Mn, Fe, Zn, Sr, F, Ni, Pb, Cu, Co) in the tier of the crown of different sexes (female, male, vegetative) varied according to the living status of the biocoenosis. As a result of changes in the element content in needles, the ratios of biophilic and technogenic elements are disturbed. However, the content of potentially toxic elements (Al, Fe, Sr, F, Ni, Pb, Cu, Cd, Co) recorded in most parts of the samples lies within the normal range for plants.
Authors and Affiliations
Elena V. Bazhina
Keywords
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- EP ID EP493091
- DOI 10.24189/ncr.2018.064
- Views 74
- Downloads 0
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