[1] Los Alamos Natl Lab, Div Earth & Environm Sci, Los Alamos, NM 87545 USA
[2] Univ British Columbia, Fac Forestry, Vancouver, BC V6T 1Z4, Canada
[3] European Commiss, Joint Res Ctr, Inst Environm & Sustainabil, I-21027 Ispra, VA, Italy
[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA
[5] Univ Idaho, Dept Geog, Moscow, ID 83844 USA
[6] Natl Taiwan Univ, Dept Geog, Taipei 10617, Taiwan
[7] Boston Univ, Dept Earth & Environm, Boston, MA 02215 USA
[8] Univ New Mexico, Dept Biol, Albuquerque, NM 87131 USA
[9] Univ Quebec, Dept Biol Sci, Ctr CEF ESCER, Montreal, PQ H3C 3P8, Canada
[10] Northwest A&F Univ, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
[11] Duke Univ, Nicholas Sch Environm, Durham, NC 27708 USA
[12] Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA
[13] Univ Maryland, Dept Geog Sci, College Pk, MD 20742 USA
[14] Univ Montana, Dept Ecosyst & Conservat Sci, Missoula, MT 59812 USA
[15] US Geol Survey, Ft Collins Sci Ctr, Jemez Mt Field Stn, Los Alamos, NM 87544 USA