干旱区生态环境知识资源中心(Arid): Longer-term post-fire succession on Wyoming big sagebrush steppe

Arid

DOI	10.1071/WF19109
	Longer-term post-fire succession on Wyoming big sagebrush steppe
	Bates, Jonathan D.; Boyd, Chad S.; Davies, Kirk W.
通讯作者	Bates, Jonathan D.
来源期刊	INTERNATIONAL JOURNAL OF WILDLAND FIRE
ISSN	1049-8001
EISSN	1448-5516
出版年	2020
卷号	29 期号:3 页码:229-239
英文摘要	We assessed plant community succession following prescribed fire on ungrazed Wyoming big sagebrush steppe, eastern Oregon. Treatments were burned (Burn; September and October, 2002) and unburned (Control) sagebrush steppe. Herbaceous yield, vegetation canopy cover and density were compared between treatments after fire (2003-18). Herbaceous yield in the Burn treatment was about double the Control for most of the study period. Prior to fire, native perennials comprised 90-95% of herbaceous yield. After fire, native perennials represented 78% (range 67-93%) and exotic annuals 22% (range 7-33%) of total yield. Exotic annuals increased after fire and responded in two stages. In the first 8 years after fire, desert alyssum dominated the annual plant composition. In the last half of the study, cheatgrass co-dominated the annual component with alyssum. Sagebrush recovery was slow and we estimated sagebrush cover would return to pre-burn levels, at the earliest, in 115 years. Burning Wyoming big sagebrush steppe would be detrimental to sagebrush-obligate wildlife for an extended time period, because of lost cover and structure provided by sagebrush. The additional forage provided on burned areas may give livestock manager's greater flexibility to rest or defer unburned habitat for wildlife species of critical concern.
英文关键词	Alyssum spp bio-crust cheatgrass Great Basin perennial bunchgrass prescribed fire
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000521101500003
WOS关键词	BIOLOGICAL SOIL CRUSTS ; BUNCHGRASS MORTALITY ; FIRE CYCLE ; RECOVERY ; POPULATION ; WILDFIRE ; COVER ; BASIN ; CONSERVATION ; COMMUNITIES
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314801
作者单位	ARS, USDA, Eastern Oregon Agr Res Ctr, 67826-A Highway 205, Burns, OR 97720 USA
推荐引用方式 GB/T 7714	Bates, Jonathan D.,Boyd, Chad S.,Davies, Kirk W.. Longer-term post-fire succession on Wyoming big sagebrush steppe[J],2020,29(3):229-239.
APA	Bates, Jonathan D.,Boyd, Chad S.,&Davies, Kirk W..(2020).Longer-term post-fire succession on Wyoming big sagebrush steppe.INTERNATIONAL JOURNAL OF WILDLAND FIRE,29(3),229-239.
MLA	Bates, Jonathan D.,et al."Longer-term post-fire succession on Wyoming big sagebrush steppe".INTERNATIONAL JOURNAL OF WILDLAND FIRE 29.3(2020):229-239.