High resolution landcover for the Western Gulf Coastal Plain of Louisiana
Dates
Publication Date
2017-07-07
Start Date
2015-06-01
End Date
2015-08-01
Citation
Hartley, S.B., Baldwin, H.Q., and Allain, L.K., 2017, High resolution landcover for the Western Gulf Coastal Plain of Louisiana: U.S. Geological Survey data release, https://doi.org/10.5066/F7QN658M.
Summary
The dataset includes Land Use/Land Cover types throughout the Chenier Eco-Region in Southwest Louisiana. Using the 2015 NAIP dataset (1m) as the basemap, E-Cognition image objects were derived from the multiresolution segmentation algorithm at 75 and 250 segments. Attempts to refine the data training methods using E-cognition, to extrapolate automating categories of this information to the entire map resulted with exceedingly low accuracy. Therefore, a raster was produced by piecing together several data resources, which provide reliable data for specific LULC categories. This process involved stitching together more reliable sources for specific categories to apply to higher resolution (75) segmentation product. Reference datasets [...]
Summary
The dataset includes Land Use/Land Cover types throughout the Chenier Eco-Region in Southwest Louisiana. Using the 2015 NAIP dataset (1m) as the basemap, E-Cognition image objects were derived from the multiresolution segmentation algorithm at 75 and 250 segments. Attempts to refine the data training methods using E-cognition, to extrapolate automating categories of this information to the entire map resulted with exceedingly low accuracy. Therefore, a raster was produced by piecing together several data resources, which provide reliable data for specific LULC categories. This process involved stitching together more reliable sources for specific categories to apply to higher resolution (75) segmentation product. Reference datasets include; 12,000 aerial points assigned to image objects derived from 75 segmentation settings (previously used to develop scripts for data training), mask created from NWI 2008 including water, wetland forested, upland forested and scrub/shrub categories, BOEM marsh classes, NLCD urban areas, and CDL data. The raster produced from this process was applied to the vector image objects derived from the 250 segmentation settings, using a majority filter (greater than 50 percent). The series of draft shapefiles were manually edited and merged, resulting in the final dataset.
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Related External Resources
Type: Related Data Release
Hartley, S.B., Allain, L.K., and Baldwin, H.Q., 2017, Grassland priority rankings model for the Western Gulf Coastal Plain of Louisiana: U.S. Geological Survey data release, https://doi.org/10.5066/F7KW5DJW.
Collaborative landscape conservation planning is largely limited by the quality of spatial data which can be applied to decision support tools to inform conservation decisions. Conservation entities across the Western Gulf Coastal Plain are taking a collaborative, strategic, landscape scale approach to conservation planning. This effort encourages communication and implementation of restoration and habitat enhancement actions within water sheds. Land cover datasets available within this geography hinder the efficiency of such efforts due to low resolution quality and limited details associated with land use categories. This product is a refined version of land cover data across the Western Gulf Coastal Plain which includes additional land use categories at a higher resolution (10m). This work was conducted in collaboration with the TPWD, and the Gulf Coast Prairie Landscape Conservation Cooperative.
