Evaluation of Pinyon-Juniper Conversion to Grassland
نویسندگان
چکیده
منابع مشابه
Sagebrush Steppe and Pinyon-juniper Ecosystems-
Principal Investigators Jeanne C. Chambers, E. Durant McArthur, Steven B. Monson, Susan E. Meyer, Nancy L. Shaw, and Robin J. Tausch – USDA Forest Service, Rocky Mountain Research Station Robert R. Blank – USDA Agricultural Research Station Steve Bunting – University of Idaho Richard R. Miller – Oregon State University Mike Pellant – USDI Bureau of Land Management Bruce A. Roundy – Brigham Youn...
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Although the distribution and structure of pinyon-juiper woodlands in the southwestern United States are thought to be the result of historic fluctuations in regional climatic conditions, more recent increases in the areal extent, tree density, soil erosion rates and loss of understory plant diversity are attributed to heavy grazing by domestic livestock and interruption of the natural fire reg...
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Hydrologic processes in the pinyon-juniper woodlands of the western region of the United States are variable because of the inherent interactions among the occurring precipitation regimes, geomorphological settings, and edaphic conditions that characterize the ecosystem. A wide range of past and present land-use practices further complicates comprehensive evaluations of these hydrologic process...
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As pinyon–juniper (specifically, Pinus monophylla and Juniperus osteosperma) woodlands in the western United States increase in distribution and density, understory growth declines and the occurrence of crown fires increases, leaving mountainsides open to both soil erosion and invasion by exotic species. We examined if the loss in understory cover that occurred with increasing tree cover was re...
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Land-cover change is a major component of global change (Foley et al., 2005). Many forms of land-cover change, such as deforestation and urbanization, are directly associated with land use. Other land-cover changes, such as melting of permafrost, may be indirectly associated with human activity via anthropogenically induced climate change. Further changes in land cover, such as the expansion of...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1971
ISSN: 0022-409X
DOI: 10.2307/3896770