Long-termecologicalconsequencesofforestfiresinthecontinuous permafrostzoneofSiberia
URI (для ссылок/цитирований):
https://iopscience.iop.org/article/10.1088/1748-9326/ab7469https://elib.sfu-kras.ru/handle/2311/143116
Автор:
AlexanderVKirdyanov
MatthiasSaurer
RolfSiegwolf
AnastasiaAKnorre
AnatolySProkushkin
OlgaVChurakova(Sidorova)
MarinaVFonti
UlfBüntgen
Коллективный автор:
Институт экологии и географии
Кафедра экологии и природопользования
Дата:
2020-03Журнал:
Environmental Research LettersКвартиль журнала в Scopus:
Q1Квартиль журнала в Web of Science:
Q1Библиографическое описание:
AlexanderVKirdyanov. Long-termecologicalconsequencesofforestfiresinthecontinuous permafrostzoneofSiberia [Текст] / AlexanderVKirdyanov, MatthiasSaurer, RolfSiegwolf, AnastasiaAKnorre, AnatolySProkushkin, OlgaVChurakova(Sidorova), MarinaVFonti, UlfBüntgen // Environmental Research Letters. — 2020. — Т. 15 (№ 3).Аннотация:
Wildfiresareanimportantfactorincontrollingforestecosystemdynamicsacrossthecircumpolar borealzone.Animprovedunderstandingoftheirdirectandindirect,short-tolong-termimpactson vegetationcoverandpermafrost–vegetationcouplingisparticularlyimportanttopredictchangesin carbon,nutrientandwatercyclesunderprojectedclimatewarming.Here,weapplydendrochronologicaltechniquesonamulti-parameterdatasettoreconstructtheeffectofwildfiresontreegrowth andseasonalpermafrostthawdepthinCentralSiberia.Basedonannually-resolvedandabsolutely datedinformationfrom19Gmelinlarch(Larixgmelinii(Rupr.)Rupr.)treesandactivesoillayer thicknessmeasurements,wefindsubstantialstand-leveldie-off,aswellastheremovalofground vegetationandtheorganiclayerfollowingamajorwildfirein1896.Reducedstemgrowthcoincides withincreasedδ13Cinthecelluloseofthesurvivingtreesduringthefirstdecadeafterthewildfire, whenstomatalconductancewasreduced.Thenextsixtosevendecadesarecharacterizedbyincreased permafrostactivesoillayerthickness.Duringthisperiodofpost-wildfireecosystemrecovery, enhancedtreegrowthtogetherwithpositiveδ13Candnegativeδ18Otrendsareindicativeofhigher ratesofphotosynthesisandimprovedwatersupply.Afterwards,athinneractivesoillayerleadsto reducedgrowthbecausetreephysiologicalprocessesbecomelimitedbysummertemperatureand wateravailability.Revealinglong-termeffectsofforestfiresonactivesoillayerthickness,ground vegetationcompositionandtreegrowth,thisstudydemonstratestheimportanceofcomplex vegetation–permafrostinteractionsthatmodifythetrajectoryofpost-fireforestrecoveryacrossmuch ofthecircumpolarborealzone.Tofurtherquantifytheinfluenceofborealwildfiresonlarge-scale carboncycledynamics,futureworkshouldconsiderawiderangeoftreespeciesfromdifferent habitatsinthehigh-northernlatitudes.