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Unravelling long-term vegetation change patterns in a binational watershed using multitemporal land cover data and historical photography

By:
, , , , and
DOI: 10.1109/Multi-Temp.2011.6005058

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Abstract

A significant amount of research conducted in the Sonoran Desert of North America has documented, both anecdotally and empirically, major vegetation changes over the past century due to human land use activities. However, many studies lack coincidental landscape-scale data characterizing the spatial and temporal manifestation of these changes. Vegetation changes in a binational (USA and Mexico) watershed were documented using a series of four land cover maps (1979-2009) derived from multispectral satellite imagery. Cover changes are compared to georeferenced, repeat oblique photographs dating from the late 19th century to present. Results indicate the expansion of grassland over the past 20 years following nearly a century of decline. Historical repeat photography documents early-mid 20th century mesquite invasions, but recent land cover data and rephotography demonstrate declines in xeroriparian/riparian mesquite communities in recent decades. These vegetation changes are variable over the landscape and influenced by topography and land management. ?? 2011 IEEE.

Additional Publication Details

Publication type:
Conference Paper
Publication Subtype:
Conference Paper
Title:
Unravelling long-term vegetation change patterns in a binational watershed using multitemporal land cover data and historical photography
ISBN:
9781457712036
DOI:
10.1109/Multi-Temp.2011.6005058
Year Published:
2011
Language:
English
Larger Work Title:
2011 6th International Workshop on the Analysis of Multi-Temporal Remote Sensing Images, Multi-Temp 2011 - Proceedings
First page:
101
Last page:
104
Number of Pages:
4
Conference Title:
2011 6th International Workshop on the Analysis of Multi-Temporal Remote Sensing Images, Multi-Temp 2011
Conference Location:
Trento
Conference Date:
12 July 2011 through 14 July 2011