干旱区生态环境知识资源中心(Arid): Characterization of a sagebrush (Artemisia tridentata ssp. wyomingensis) die-off on the Handford Site

Arid

DOI	10.2172/552783
报告编号	PNNL--11700
来源ID	OSTI_ID: 552783
	Characterization of a sagebrush (Artemisia tridentata ssp. wyomingensis) die-off on the Handford Site
	Cardenas, A.; Lewinsohn, J.; Auger, C.; Downs, J.L.; Cadwell, L.L.; Burrows, R.
英文摘要	The Hanford Site contains one of the few remaining contiguous areas of shrub-steppe habitat left in Washington State. This habitat is home to many native plant and wildlife species, some of which are threatened with extinction or are unique to the Site. The importance of the Hanford Site increases as other lands surrounding the Site are developed, and these native species and habitats are lost. Stands of Wyoming big sagebrush (Artemisia tridentata ssp. wyomingensis) on the Site are a particularly important component of shrub-steppe habitat, because a number of wildlife require big sagebrush for food and cover. Since 1993, researchers and field biologists have made anecdotal observations of dying and declining sagebrush in stands of shrubs near the 100 Areas. This study was initiated to delineate and document the general boundary where sagebrush stands appear to be declining. We mapped the areal extent of the die-off using a global positioning system and found that the central portion of the die-off encompasses 280 hectares. Shrub stand defoliation was estimated to be near or greater than 80% in this area. The remainder of the die-off area exhibits varying mixtures of completely defoliated, partially defoliated, and healthy-looking stands. Declining sagebrush stands comprise a total of 1776 hectares.
出版年	1997
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; SHRUBS ; PLANT GROWTH ; HABITAT ; MIXTURES ; HANFORD RESERVATION ; GERMINATION
URL	http://www.osti.gov/scitech/servlets/purl/552783
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/267266
推荐引用方式 GB/T 7714	Cardenas, A.,Lewinsohn, J.,Auger, C.,et al. Characterization of a sagebrush (Artemisia tridentata ssp. wyomingensis) die-off on the Handford Site,1997.