Knowledge graph centered on Watershed function validation with 15 nodes and 49 connections. Top connected: Gothic, Populus tremuloides, East River, Washington Gulch, Watershed zonation through hillslope clustering fo.
Method synopsis
Validates identified zones using independent datasets of watershed functions including drought sensitivity derived from satellite NDVI timeseries and nitrogen export from streamflow chemistry. Tests whether zones capture meaningful functional differences.
Synthesized from method descriptions across 1 paper using this protocol.
Evaluated zones using foresummer drought sensitivity map based on Landsat normalized difference vegetation index (NDVI) and river nitrogen export data. Drought sensitivity represented magnitude of peak plant productivity changes with respect to drought conditions. Computed annual discharge and nitrogen export from streamflow and chemistry data at sub-catchments.
Quantities: Foresummer drought sensitivity based on linear regression of historical peak Landsat NDVI as function of Palmer drought severity index in June. Nitrogen export computed from streamflow and chemistry data collected in 2015, 2016, and 2017.Duration: Historical NDVI analysis used multiple years of Landsat data; nitrogen export used 3 years of data (2015-2017)Conditions: Drought sensitivity computed for primary growing season; nitrogen export during snowmelt and baseflow periods
Equipment: Landsat satellite imagery, Palmer drought severity index data, Streamflow and chemistry measurement data