ABoVE: Peak Greenness for Canadian Boreal Forest from Landsat 5 TM Imagery, 1984-2011

Arctic-Boreal Vulnerability Experiment (ABoVE)

关键词: BIOSPHERE;    VEGETATION;    VEGETATION INDEX;    NORMALIZED DIFFERENCE VEGETATION INDEX (NDVI);    LAND SURFACE;    LAND USE/LAND COVER;    LAND USE/LAND COVER CLASSIFICATION;    HUMAN DIMENSIONS;    NATURAL HAZARDS;    WILDFIRES;    BURNED AREA;    BIOSPHERE;    VEGETATION;    PLANT PHENOLOGY;   

DOI  :  https://doi.org/10.3334/ORNLDAAC/1587

学科分类：地球科学(综合)

美国|英语

【 摘 要 】

This dataset provides a 28-year time series of peak greenness (NDVI) data derived from Landsat 5 TM imagery over the boreal forest region of Canada. Landsat 5 TM scenes were collected for 46 selected sidelap sites along gradients in climate, tree cover, and disturbance history from 1984 to 2011. Peak-greenness reflectance was computed for 30-m Landsat pixels using the maximum normalized difference vegetation index (NDVI) along with the normalized burn ratio (NBR) during the period between days of the year (DOY) 180 and 204. To facilitate trend analysis at each site, the NDVI and NBR data of the 30-m Landsat pixels were regridded to the coarser MODIS 500-m (463.3-m) spatial scale to reduce the effects of missing data and to enhance the significance of the trend. The regridded NDVI and NBR 28-year time series data at 500-m resolution are provided for each of the 46 sites. Two trend analyses were run on the 500-m resolution data and are reported for each site. Supplemental site metadata are also provided, including the number of valid Landsat pixels, land cover composition, and disturbance history, for each 500-m pixel.

【 授权许可】

Unknown