DocumentCode :
2783939
Title :
United States national land cover data base development 1992–2001 and beyond
Author :
Yang, Limin
Author_Institution :
U.S. Geol. Survey, Earth Resources Obs. & Sci. Center, Sioux Falls, SD
fYear :
2008
fDate :
June 30 2008-July 2 2008
Firstpage :
1
Lastpage :
6
Abstract :
An accurate, up-to-date and spatially-explicate national land cover database is required for monitoring the status and trends of the nationpsilas terrestrial ecosystem, and for managing and conserving land resources at the national scale. With all the challenges and resources required to develop such a database, an innovative and scientifically sound planning must be in place and a partnership be formed among users from government agencies, research institutes and private sectors. In this paper, we summarize major scientific and technical issues regarding the development of the NLCD 1992 and 2001. Experiences and lessons learned from the project are documented with regard to project design, technical approaches, accuracy assessment strategy, and project implementation. Future improvements in developing next generation NLCD beyond 2001 are suggested, including: (1) enhanced satellite data preprocessing in correction of atmospheric and adjacency effect and the topographic normalization; (2) improved classification accuracy through comprehensive and consistent training data and new algorithm development; (3) multi-resolution and multitemporal database targeting major land cover changes and land cover database updates; (4) enriched database contents by including additional biophysical parameters and/or more detailed land cover classes through synergizing multi-sensor, multi-temporal, and multi-spectral satellite data and ancillary data, and (5) transform the NLCD project into a national land cover monitoring program.
Keywords :
data assimilation; ecology; environmental factors; environmental science computing; geophysics computing; vegetation mapping; visual databases; AD 1992 to 2001; NLCD 1992; NLCD 2001; United States national land cover database development; adjacency effect correction; algorithm development; ancillary data; atmospheric effect correction; biophysical parameters; classification accuracy; comprehensive training data; consistent training data; land cover change; land cover class; land cover database update; land resource conservation; land resource management; multiresolution database; multisensor data; multispectral data; multitemporal database; national land cover monitoring program; project accuracy assessment strategy; project design; project implementation; project technical approaches; satellite data preprocessing; terrestrial ecosystem monitoring; topographic normalization correction; Earth; Ecosystems; Geology; Geoscience; Remote monitoring; Remote sensing; Satellites; Spatial databases; Spatial resolution; Terrain mapping; CART; Land Cover Database; Land Cover Monitoring;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Earth Observation and Remote Sensing Applications, 2008. EORSA 2008. International Workshop on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2393-4
Electronic_ISBN :
978-1-4244-2394-1
Type :
conf
DOI :
10.1109/EORSA.2008.4620339
Filename :
4620339
Link To Document :
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