R
Ruth DeFries
Researcher at Columbia University
Publications - 294
Citations - 63892
Ruth DeFries is an academic researcher from Columbia University. The author has contributed to research in topics: Deforestation & Land cover. The author has an hindex of 98, co-authored 280 publications receiving 56576 citations. Previous affiliations of Ruth DeFries include Lamont–Doherty Earth Observatory & University of Maryland, College Park.
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Journal ArticleDOI
Global Consequences of Land Use
Jonathan A. Foley,Ruth DeFries,Gregory P. Asner,Carol C. Barford,Gordon B. Bonan,Stephen R. Carpenter,F. Stuart Chapin,Michael T. Coe,Michael T. Coe,Gretchen C. Daily,Holly K. Gibbs,Joseph H. Helkowski,Tracey Holloway,Erica A. Howard,Christopher J. Kucharik,Chad Monfreda,Jonathan A. Patz,I. Colin Prentice,Navin Ramankutty,Peter K. Snyder +19 more
TL;DR: Global croplands, pastures, plantations, and urban areas have expanded in recent decades, accompanied by large increases in energy, water, and fertilizer consumption, along with considerable losses of biodiversity.
Journal ArticleDOI
Global fire emissions and the contribution of deforestation, savanna, forest, agricultural, and peat fires (1997-2009)
G. R. van der Werf,James T. Randerson,Louis Giglio,Louis Giglio,G. J. Collatz,Mingquan Mu,Prasad S. Kasibhatla,Douglas C. Morton,Ruth DeFries,Yufang Jin,T. T. van Leeuwen +10 more
TL;DR: In this paper, the authors used a revised version of the Carnegie-Ames-Stanford-Approach (CASA) biogeochemical model and improved satellite-derived estimates of area burned, fire activity, and plant productivity to calculate fire emissions for the 1997-2009 period on a 0.5° spatial resolution with a monthly time step.
Journal ArticleDOI
Fire in the Earth System
David M. J. S. Bowman,Jennifer K. Balch,Jennifer K. Balch,Jennifer K. Balch,Paulo Artaxo,William J. Bond,Jean M. Carlson,Mark A. Cochrane,Carla M. D'Antonio,Ruth DeFries,John Doyle,Sandy P. Harrison,Fay H. Johnston,Jon E. Keeley,Jon E. Keeley,Meg A. Krawchuk,Christian A. Kull,J. Brad Marston,Max A. Moritz,I. Colin Prentice,Christopher I. Roos,Andrew C. Scott,Thomas W. Swetnam,Guido R. van der Werf,Stephen J. Pyne +24 more
TL;DR: What is known and what is needed to develop a holistic understanding of the role of fire in the Earth system are reviewed, particularly in view of the pervasive impact of fires and the likelihood that they will become increasingly difficult to control as climate changes.
Journal ArticleDOI
Global land cover classification at 1 km spatial resolution using a classification tree approach
TL;DR: In this paper, a 1km spatial resolution land cover classification using data for 1992-1993 from the Advanced Very High Resolution Radiometer (AVHRR) is presented. But the approach taken involved a hierarchy of pair-wise class trees where a logic based on vegetation form was applied until all classes were depicted.
Book ChapterDOI
Carbon and Other Biogeochemical Cycles
Philippe Ciais,Christopher L. Sabine,Govindasamy Bala,Laurent Bopp,Victor Brovkin,Josep G. Canadell,Abha Chhabra,Ruth DeFries,James N. Galloway,Martin Heimann,Chris D. Jones,C. Le Quéré,Ranga B. Myneni,S. L. Piao,Peter E. Thornton +14 more
TL;DR: For base year 2010, anthropogenic activities created ~210 (190 to 230) TgN of reactive nitrogen Nr from N2 as discussed by the authors, which is at least 2 times larger than the rate of natural terrestrial creation of ~58 Tg N (50 to 100 Tg nr yr−1) (Table 6.9, Section 1a).