منابع مشابه
Soil carbon sequestration in United States rangelands
Rangelands are uncultivated lands that include grasslands, savannahs, steppes, shrub lands, deserts and tundra. The native vegetation on rangelands is predominantly grasses, forbs and shrubs (Kothmann, 1974). Rangelands cover 31 percent of the land surface area of the United States (Havstad et al., 2009), and up to half of the land surface area worldwide (Lund, 2007). Most land areas that are n...
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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 ...
متن کاملHealth System Reform in the United States
In 2010, the United States adopted its first-ever comprehensive set of health system reforms in the Affordable Care Act (ACA). Implementation of the law, though politically contentious and controversial, has now reached a stage where reversal of most elements of the law is no longer feasible. The controversial portions of the law that expand affordable health insurance coverage to most U.S. cit...
متن کاملRace, Education Attainment, and Happiness in the United States
Background and aims: As suggests by the Minorities’ Diminished Returns (MDR) theory, educationattainment and other socioeconomic status (SES) indicators have a smaller impact on the health andwell-being of non-White than White Americans. To test whether MDR also applies to happiness, in thepresent study, Blacks and Whites were compared in terms of the effect of education attai...
متن کاملFeminism and Abortion in the United States’ Party Politics
Abstract The feminist movement in the United States like other countries has tried to establish equality for women. From the first attempts to gain constitutional right for vote, up to the current radical demands, feminists have struggled to make changes in the U.S. party politics and obtain their rights within the parties. One of the important issues in which women played a key role in party ...
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ژورنال
عنوان ژورنال: Journal of Range Management
سال: 1974
ISSN: 0022-409X
DOI: 10.2307/3896816