作者单位:
USDA, Forest Serv, Rocky Mt Res Stn, Laramie, WY 82070 USA
[1]
USDA, Forest Serv, Pacific NW Res Stn, La Grande, OR 97850 USA
[2]
Oregon State Univ, Dept Forest Sci, Corvallis, OR 97331 USA
[3]
Montana State Univ, Dept Land Resources & Environm Sci, Bozeman, MT 59717 USA
[4]
发布时间
2013-11-20