干旱区生态环境知识资源中心(Arid): Secondary plant succession on disturbed sites at Yucca Mountain, Nevada

Arid

DOI	10.2172/114521
报告编号	EGG--11265-1118
来源ID	OSTI_ID: 114521
	Secondary plant succession on disturbed sites at Yucca Mountain, Nevada
	Angerer, J.P.; Ostler, W.K.; Gabbert, W.D.; Schultz, B.W.
英文摘要	This report presents the results of a study of secondary plant succession on disturbed sites created during initial site investigations in the late 1970s and early 1980s at Yucca Mountain, NV. Specific study objectives were to determine the rate and success of secondary plant succession, identify plant species found in disturbances that may be suitable for site-specific reclamation, and to identify environmental variables that influence succession on disturbed sites. During 1991 and 1992, fifty seven disturbed sites were located. Vegetation parameters, disturbance characteristics and environmental variables were measured at each site. Disturbed site vegetation parameters were compared to that of undisturbed sites to determine the status of disturbed site plant succession. Vegetation on disturbed sites, after an average of ten years, was different from undisturbed areas. Ambrosia dumosa, Chrysothamnus teretifolius, Hymenoclea salsola, Gutierrezia sarothrae, Atriplex confertifolia, Atriplex canescens, and Stephanomeria pauciflora were the most dominant species across all disturbed sites. With the exception of A. dumosa, these species were generally minor components of the undisturbed vegetation. Elevation, soil compaction, soil potassium, and amounts of sand and gravel in the soil were found to be significant environmental variables influencing the species composition and abundance of perennial plants on disturbed sites. The recovery rate for disturbed site secondary succession was estimated. Using a linear function (which would represent optimal conditions), the recovery rate for perennial plant cover, regardless of which species comprised the cover, was estimated to be 20 years. However, when a logarithmic function (which would represent probable conditions) was used, the recovery rate was estimated to be 845 years. Recommendations for future studies and site-specific reclamation of disturbances are presented.
出版年	1994
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	54 ENVIRONMENTAL SCIENCES ; 05 NUCLEAR FUELS ; YUCCA MOUNTAIN ; VEGETATIVE PROPAGATION ; SITE CHARACTERIZATION ; PLANTS ; MATHEMATICAL MODELS ; REMEDIAL ACTION ; ENVIRONMENT ; Yucca Mountain Project
URL	http://www.osti.gov/scitech/servlets/purl/114521
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/265915
推荐引用方式 GB/T 7714	Angerer, J.P.,Ostler, W.K.,Gabbert, W.D.,et al. Secondary plant succession on disturbed sites at Yucca Mountain, Nevada,1994.