منابع مشابه
Integrated Restoration Strategies Towards Weed Control On Western Rangelands
Although cheatgrass (Bromus tectorum) has been widely distributed across western rangelands for >70 years, the full ecologic and economic impacts of this non-native invasive plant have not yet occurred. Unfortunately, several independent lines of evidence indicate that the rate at which acreage becomes infested with cheatgrass is increasing rapidly. Furthermore, the invasion and spread of a num...
متن کاملEcosystem Services and Western U .S . Rangelands
Rangelands are expansive, unimproved lands located in arid or semi–arid regions, spanning a variety of landscapes including savannahs, high and low altitude deserts, mountain meadows, and tundra. Rangelands are generally unsuitable for crop production due to aridity, topography, and extreme temperatures. Rangelands support varying mixtures of native and nonnative grasses, grass–like plants, for...
متن کاملComments on Research Needs
I will not attempt to summarize all of the excellent work presented at this meeting-such a summarization would presume expertise in all of the varied fields which have been represented here, an expertise I do not possess. I believe it will be more useful for me to attempt a very personal assessment of those gaps which I see as now confronting us, in an attempt to identify those that are signifi...
متن کاملUSDA - ARS Global Change Research on Rangelands and
Rangelands T he topic of global change is found almost daily in newspaper and magazine articles and on television. Global change refers to large-scale changes in the Earth’s biological, geological, hydrological, and atmospheric systems, whether of human or natural origin. The primary concern of global change has centered on the rapid increase in atmospheric concentrations of primary greenhouse ...
متن کاملEvolution of Sagebrush Rangelands in the Western United States
In this article we develop a simulation model for estimating the economic efficiency of fuel treatments and apply it to two sagebrush ecosystems in the Great Basin of the western United States: Wyoming Sagebrush Steppe and Mountain Big Sagebrush. These two ecosystems face the two most prominent resource management concerns in sagebrush ecosystems relative to wildfire: annual grass invasion and ...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1978
ISSN: 0022-409X
DOI: 10.2307/3897621