气候变化领域集成服务门户(CCPortal): Trajectories and tipping points of pinon-juniper woodlands after fire and thinning

CCPortal

DOI	10.1111/gcb.17149
	Trajectories and tipping points of pinon-juniper woodlands after fire and thinning
	Phillips, Michala L.; Lauria, Cara; Spector, Tova; Bradford, John B.; Gehring, Catherine; Osborne, Brooke B.; Howell, Armin; Grote, Edmund E.; Rondeau, Renee J.; Trimber, Gillian M.; Robinson, Benjamin; Reed, Sasha C.
发表日期	2024
ISSN	1354-1013
EISSN	1365-2486
起始页码	30
结束页码	2
卷号	30 期号:2
英文摘要	Pinon-juniper (PJ) woodlands are a dominant community type across the Intermountain West, comprising over a million acres and experiencing critical effects from increasing wildfire. Large PJ mortality and regeneration failure after catastrophic wildfire have elevated concerns about the long-term viability of PJ woodlands. Thinning is increasingly used to safeguard forests from fire and in an attempt to increase climate resilience. We have only a limited understanding of how fire and thinning will affect the structure and function of PJ ecosystems. Here, we examined vegetation structure, microclimate conditions, and PJ regeneration dynamics following similar to 20 years post-fire and thinning treatments. We found that burned areas had undergone a state shift that did not show signs of returning to their previous state. This shift was characterized by (1) distinct plant community composition dominated by grasses; (2) a lack of PJ recruitment; (3) a decrease in the sizes of interspaces in between plants; (4) lower abundance of late successional biological soil crusts; (5) lower mean and minimum daily soil moisture values; (6) lower minimum daily vapor pressure deficit; and (7) higher photosynthetically active radiation. Thinning created distinct plant communities and served as an intermediate between intact and burned communities. More intensive thinning decreased PJ recruitment and late successional biocrust cover. Our results indicate that fire has the potential to create drier and more stressful microsite conditions, and that, in the absence of active management following fire, there may be shifts to persistent ecological states dominated by grasses. Additionally, more intensive thinning had a larger impact on community structure and recruitment than less intensive thinning, suggesting that careful consideration of goals could help avoid unintended consequences. While our results indicate the vulnerability of PJ ecosystems to fire, they also highlight management actions that could be adapted to create conditions that promote PJ re-establishment.
英文关键词	fire; invasion; plant community assembly; soil moisture; thinning
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:001159367500001
来源期刊	GLOBAL CHANGE BIOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304878
作者单位	United States Department of the Interior; United States Geological Survey; United States Department of the Interior; United States Geological Survey; United States Department of Agriculture (USDA); United States Forest Service; United States Department of the Interior; United States Geological Survey; Northern Arizona University; Utah System of Higher Education; Utah State University; Colorado State University; United States Department of the Interior; United States Geological Survey
推荐引用方式 GB/T 7714	Phillips, Michala L.,Lauria, Cara,Spector, Tova,et al. Trajectories and tipping points of pinon-juniper woodlands after fire and thinning[J],2024,30(2).
APA	Phillips, Michala L..,Lauria, Cara.,Spector, Tova.,Bradford, John B..,Gehring, Catherine.,...&Reed, Sasha C..(2024).Trajectories and tipping points of pinon-juniper woodlands after fire and thinning.GLOBAL CHANGE BIOLOGY,30(2).
MLA	Phillips, Michala L.,et al."Trajectories and tipping points of pinon-juniper woodlands after fire and thinning".GLOBAL CHANGE BIOLOGY 30.2(2024).