Tutorial: Compute Biomass Water productivity from WaPOR datasets

Aim: In this tutorial you will compute seasonal Evapotranspiration (AETI) and Biomass water productivity (WPb) using remote sensing data from WaPOR database. The season under consideration is summer crop season starting from July to November (5 months).

Data & software:  

  • Using Actual EvapoTranspiration and Interception (AETI) and Net Primary Productivity (NPP) data from WaPOR
  • You will use Dekadal (10 days) data, which means for five months, you have 15 maps (every 10days)
    •  All the required data is provided to you.
    • QGIS software

    Steps: Below given are the important steps to be followed:

    1. Open "QGIS with GRASS" from start progra
    2. Open all the NPP and AETI maps for a season in QGIS
    3. Compute seasonal NPP and AETI
    4. Compute Above ground biomass from seasonal NPP
    5. Compute Seasonal Biomass Water Productivity (WPb)
    6. Compute statistics of AETI and WPb on each land cover type

    Watch below video to see how above steps are implemented for the year 2018 in QGIS.




    Your Tasks:

    1. Repeat the analysis for the year 2019
    2. Prepare a short report (2 pages maximum) containing i) Two maps prepared in QGIS – Seasonal AETI and WPb ii) Reflection on results with statistics (mean AETI and WPb per irrigated and rainfed)
    3. Submit the report by 20 April 2021 midnight


    Check "Additional materials" tab for tutorials on GIS and RS

    Watch below video to see how to use map layout in QGIS to prepare maps for the report:



    Last modified: Tuesday, 13 April 2021, 9:05 PM