Arid
DOI10.2111/REM-D-10-00147.1
Land-Use Legacies and Vegetation Recovery 90 Years After Cultivation in Great Basin Sagebrush Ecosystems
Morris, L. R.1; Monaco, T. A.1; Sheley, R. L.2
通讯作者Morris, L. R.
来源期刊RANGELAND ECOLOGY & MANAGEMENT
ISSN1550-7424
出版年2011
卷号64期号:5页码:488-497
英文摘要

Agricultural land use is known to alter ecological processes, and native plant communities can require decades to centuries to recover from the disturbance of cultivation. "Recovery" is typically measured by comparison to undisturbed adjacent sites as a control. Recovery following cultivation in sagebrush ecosystems of the Great Basin remains largely unexamined even though nearly a half million hectares of land were dry-farmed and abandoned in the early 1900s. We tested the hypothesis that the native vegetation has not recovered from this exotic disturbance by evaluating differences in canopy cover of shrubs, grasses, and forbs between paired sets of historically dry-farmed land and adjacent never-cultivated areas. Paired sites were located in three ecological sites in northwestern Utah. We found that vegetation recovery from cultivation is variable by growth form, species, and ecological site. Shrub recovery was different among sagebrush (Artemisia) species. Yellow rabbitbrush (Chrysothamnus viscidiflorus [Hook.] Nutt.) and black greasewood (Sarcobatus vermiculatus [Hook.] Tort.), which often increase following disturbance, maintained higher cover inside old fields. At one of the paired sets, shrub composition was altered from a mix of four species to dominance of mainly Wyoming big sagebrush (Artemisia tridentata Nutt. subsp. wyomingensis Beetle & Young). Total forb cover was generally lower in cultivated areas and some species, such as spiny phlox (Phlox hoodii Richardson), had not recovered. The most common grass species encountered across all ecological sites, bottlebrush squirreltail (Elymus elymoides [Raf.] Swezey), had higher cover in cultivated areas. Surprisingly, exotic annual species, such as cheatgrass (Bromus tectorum L.), did not dominate these sites as they have for decades after cultivation in other areas of the Great Basin. This study demonstrates that the land-use legacy of dry farming on vegetation remains nearly a century after cultivation has ceased, and has direct implications for describing ecological site conditions.


英文关键词alternate stable states dry farming ex-arable fields old fields secondary succession site history
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000295189800008
WOS关键词BROMUS-TECTORUM L ; SECONDARY SUCCESSION ; WESTERN-AUSTRALIA ; PLANT SUCCESSION ; ORGANIC-MATTER ; COMMUNITIES ; HISTORY ; RESTORATION ; DYNAMICS ; DESERT
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/170276
作者单位1.Utah State Univ, USDA, ARS, Forage & Range Res Lab, Logan, UT 84322 USA;
2.ARS, USDA, Range & Forage Meadow Management Unit, Burns, OR 97720 USA
推荐引用方式
GB/T 7714
Morris, L. R.,Monaco, T. A.,Sheley, R. L.. Land-Use Legacies and Vegetation Recovery 90 Years After Cultivation in Great Basin Sagebrush Ecosystems[J],2011,64(5):488-497.
APA Morris, L. R.,Monaco, T. A.,&Sheley, R. L..(2011).Land-Use Legacies and Vegetation Recovery 90 Years After Cultivation in Great Basin Sagebrush Ecosystems.RANGELAND ECOLOGY & MANAGEMENT,64(5),488-497.
MLA Morris, L. R.,et al."Land-Use Legacies and Vegetation Recovery 90 Years After Cultivation in Great Basin Sagebrush Ecosystems".RANGELAND ECOLOGY & MANAGEMENT 64.5(2011):488-497.
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