期刊
REGIONAL ENVIRONMENTAL CHANGE
卷 12, 期 4, 页码 813-823出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s10113-012-0296-3
关键词
Mojave; Sonoran; Great Basin; Fire; Development; Land use
资金
- US Geological Survey (USGS) Geographic Analysis and Monitoring (GAM) program
- Office of Global Change
- US Environmental Protection Agency
- NASA's Land-cover and Land-use Change Program.
As part of the US Geological Survey's Land Cover Trends project, land-use/land-cover change estimates between 1973 and 2000 are presented for the basin and range ecoregions, including Northern, Central, Mojave, and Sonoran. Landsat data were employed to estimate and characterize land-cover change from 1973, 1980, 1986, 1992, and 2000 using a post-classification comparison. Overall, spatial change was 2.5% (17,830 km(2)). Change increased steadily between 1973 and 1986 but decreased slightly between 1992 and 2000. The grassland/shrubland class, frequently used for livestock grazing, constituted the majority of the study area and had a net decrease from an estimated 83.8% (587,024 km(2)) in 1973 to 82.6% (578,242 km(2)) in 2000. The most common land-use/land-cover conversions across the basin and range ecoregions were indicative of the changes associated with natural, nonmechanical disturbances (i.e., fire), and grassland/shrubland loss to development, agriculture, and mining. This comprehensive look at contemporary land-use/landcover change provides critical insight into how the deserts of the United States have changed and can be used to inform adaptive management practices of public lands.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据