白音敖包自然保护区沙地云杉和油松响应极端干旱的生态弹性差异

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关键词沙地云杉；油松；气候因子；干旱事件；生态弹性中图分类号S759.9文献标识码A文章编号 0517-6611（2025）21-0108-05doi：10.3969/j.issn.0517-6611.2025.21.020

AbstractOetie]Tlucdateteesposeoficeamongolicagrothtoliaticfactorsnditsesistaesiliee，dgothstabilityunderrousdoughnts.etdoroutlentrseci，insifdmoglieedfo ativeanalysis.Teresechfocussoxamingthedialgrowthespossoftsespecistoprarmaticfactosandtedieencsin theircologicalilieneduingbothsigle-araduli-ardouhtevents.ResultedalgrowthofothcemongolicadPins tabuliformiswasostradbouhtcodtssuingfroitmperauesdiadeqatepreipiatioTeanoelatio cientbetweenPicemongolicandtesandarddprecipiatio-evapotraspiationidex（SE）ovrthentieyarasO.7sfor PinustabulifoisitasO32.Thissugestedtatcemongolicebitsahighersensititytodrougtconditios.uringsiglearf drought，teresilenceiicesofothPicemongoicandPinustbulifoisinandyreasereaproimately1.Onicatingaabe androbustdroughtsistane.However，drigconsecutiveearsofdroughtthsistaeadrecoerysilienceindicsoficeogoc decreased by 56.04% and 53.85% ，respectively，while the recovery index increased marginall by only 11.76%. In contrast，for Pinus tabuliformis，the resistance and recovery resilience indices decreased by 39.78% and 24.30% ，respectively，but the recovery index showed a more substantial increase of 23.64% .[ Conclusion]The drought resistance and recovery capacity of Picea mongolica in sandy areas are weaker thanthoseofPinustabulfrmiswhenfacingconsecutivedroughteventsUnderthebackgroundoffrequentextremeclimateeventsinthefuture，more efortsshouldbemade toprotectand managethe naturalforestsof Piceamongolica，araretree species，ffectively.

Key words Picea mongolica; Pinus tabuliformis ;Climatic factors ;Drought events;Ecological resilience

全球气候变暖引发的气候均值偏移、变率增强及季节性紊乱已严重威胁自然生态系统的结构与功能完整性。（剩余10625字）