Roadless space of the conterminous United States

被引：99
|
作者：
Watts, Raymond D. [1 ]
Compton, Roger W.
McCammon, John H.
Rich, Carl L.
Wright, Stewart M.
Owens, Tom
Ouren, Douglas S.
机构：
[1] US Geol Survey, Ft Collins, CO 80526 USA
[2] US Geol Survey, Denver, CO 80225 USA
来源：
SCIENCE | 2007年 / 316卷 / 5825期
关键词：
D O I：
10.1126/science.1138141
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
Roads encroaching into undeveloped areas generally degrade ecological and watershed conditions and simultaneously provide access to natural resources, land parcels for development, and recreation. A metric of roadless space is needed for monitoring the balance between these ecological costs and societal benefits. We introduce a metric, roadless volume ( RV), which is derived from the calculated distance to the nearest road. RV is useful and integrable over scales ranging from local to national. The 2.1 million cubic kilometers of RV in the conterminous United States are distributed with extreme inhomogeneity among its counties.
引用
收藏
页码：736 / 738
页数：3
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