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Net changes in regional woody vegetation cover and carbon storage in Texas Drylands, 19371999

Summary: Net changes in regional woody vegetation cover and
carbon storage in Texas Drylands, 1937±1999
G R E G O R Y P . A S N E R * , S T E V E A R C H E R { 1
, R . F L I N T H U G H E S { 2
, R . J A M E S A N S L E Y § and
C A R O L A . W E S S M A N {
*Department of Global Ecology, Carnegie Institution of Washington and Department of Geological and Environmental Sciences,
Stanford University, Stanford, CA 94305, {Department of Rangeland Ecology and Management, Texas A&M University, College
Station, TX 77843, {Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO 80309,
§Texas A&M Research & Extension Center, Vernon, TX 76348, {Department of EPO Biology and CIRES, University of Colorado,
Boulder, CO 80309
Although local increases in woody plant cover have been documented in arid and
semiarid ecosystems worldwide, there have been few long-term, large-scale analyses of
changes in woody plant cover and aboveground carbon (C) stocks. We used historical
aerial photography, contemporary Landsat satellite data, field observations, and image
analysis techniques to assess spatially specific changes in woody vegetation cover and
aboveground C stocks between 1937 and 1999 in a 400-km2
region of northern Texas,
USA. Changes in land cover were then related to topo-edaphic setting and historical


Source: Archer, Steven R. - Savanna/Woodland Ecology Lab., School of Natural Resources and the Environment, University of Arizona


Collections: Environmental Sciences and Ecology