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  3. Fractional estimates of invasive annual grass cover in dryland ecosystems of western United States (2016 – 2018)

Fractional estimates of invasive annual grass cover in dryland ecosystems of western United States (2016 – 2018)

Dates

Publication Date
Start Date
2016
End Date
2018

Citation

Dahal, D., Wylie, B.K., Parajuli, S., and Pastick, N.J., 2020, Fractional estimates of invasive annual grass cover in dryland ecosystems of western United States (2016 – 2018): U.S. Geological Survey data release, https://doi.org/10.5066/P9537QG9.

Summary

Invasive annual grasses, such as cheatgrass (Bromus tectorum L.), have proliferated in dryland ecosystems of the western United States, promoting increased fire activity and reduced biodiversity that can be detrimental to socio-environmental systems. Monitoring exotic annual grass cover and dynamics over large areas requires the use of remote sensing that can support early detection and rapid response initiatives. Here, we integrated in situ observations, weekly composites of harmonized Landsat and Sentinel-2 (HLS) data, maps of biophysical variables (e.g. soils and topography) and machine learning techniques to develop fractional estimates of exotic annual grass cover at a 30-m spatial resolution from 2016 to 2018. Comparisons with [...]

Contacts

Point of Contact :
Bruce K Wylie
Process Contact :
Bruce K Wylie
Originator :
Devendra Dahal (CTR), Bruce K Wylie, Sujan Parajuli, Neal J Pastick (CTR)
Metadata Contact :
Sujan Parajuli
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Earth Resources Observation and Science (EROS) Center
USGS Mission Area :
Land Resources

Attached Files

Click on title to download individual files attached to this item.

Fractional_Estimates_Of_GrassCover_WesternUS_2016-2018.xml
Original FGDC Metadata
View 		22.2 KB application/fgdc+xml
Mean estimate of grass cover in the western US 2016.zip 191.02 MB application/zip
Mean estimate of grass cover in the western US 2017.zip 190.9 MB application/zip
Mean estimate of grass cover in the western US 2018.zip 189.77 MB application/zip
Standard deviation estimate of grass cover in the western US 2016.zip 90.64 MB application/zip
Standard deviation estimate of grass cover in the western US 2017.zip 92.84 MB application/zip
Standard deviation estimate of grass cover in the western US 2018.zip 91.12 MB application/zip

Purpose

The overall goal of this research is to develop an exotic annual grass mapping system that leverages in situ observations, harmonized Landsat and Sentinel-2 (HLS) data and remote sensing metrics (i.e. phenological and spectral indices), and data mining techniques for mapping exotic annual grass (%) cover (30-m spatial resolution) throughout dry lands ecosystems in the Western United States.

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Communities

  • Invasive Annual Grasses
  • USGS Data Release Products

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DOI https://www.sciencebase.gov/vocab/category/item/identifier doi:10.5066/P9537QG9

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