Fire Scar mapping in QGIS 3.6

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  • เผยแพร่เมื่อ 14 ธ.ค. 2024

ความคิดเห็น • 13

  • @lagocardiel
    @lagocardiel 3 ปีที่แล้ว

    Excelente, muy bien explicado.

  • @Ekwala
    @Ekwala 4 ปีที่แล้ว

    Thanks. Very informative. Can I please ask for your ideas around detecting biodiversity change?

    • @spatial-exploration1478
      @spatial-exploration1478  4 ปีที่แล้ว

      Thanks James. I guess it depends on your research question, and at what scale (spatial and/or temporal) you want to detect any changes? If you had access to basic biodiversity indices (diversity, richness, evenness etc), you could use these as a dependent variable in a model with parameters derived from remote sensing. If you get a consistently good fit across tour study areas you could use this information to infer biodiversity change from remotely sensed data elsewhere (but with heaps of caveats for unexplained variation). I’m Interested to hear more about your work.

  • @JulianRoinSkovhus
    @JulianRoinSkovhus 3 ปีที่แล้ว +1

    Nice video. When I try to acces the Sentinel-2 data using the SCP plugin, it doesn't appear. Do you know why this is? I'm using QGIS3.10

    • @spatial-exploration1478
      @spatial-exploration1478  3 ปีที่แล้ว +1

      Hey thanks Julian. Appreciate the feedback.
      I would need to see a screenshot or more info to help. Have you correctly entetered your username and password for the Sentinel imagery? It’s the same credentials as if you registered on the sentinel hub.
      But I’ll do one better. The guy who made SCP is awesome. He has a Facebook page where people can get help. Just post a comment with a screenshot and they can start to help.
      facebook.com/SemiAutomaticClassificationPlugin

    • @JulianRoinSkovhus
      @JulianRoinSkovhus 3 ปีที่แล้ว +1

      Thank you for the very shift response! I'm new to QGIS and remote sensing and people like you really make the learning process enjoyable. It was the login for the Sentinel imagery that did the trick for me. I'm considering a fire in New South Wales. If I have questions along the way, can I return to this thread? :-)

    • @spatial-exploration1478
      @spatial-exploration1478  3 ปีที่แล้ว +1

      @@JulianRoinSkovhus absolutely mate. Best of luck

    • @JulianRoinSkovhus
      @JulianRoinSkovhus 3 ปีที่แล้ว

      @@spatial-exploration1478 Hi again. Using your video I have managed to get some pretty nice results. Thanks again! However, the fire scar I found is not as 'clear' as the one in Broome. Even with a shape file of the fire scars in NSW I find it difficult to locate coherent fire scars that make for good burn severity maps and calculation of burn area. I was wondering if you have any tips for choosing the fires? Or maybe you have analyzed one in NSW/Victoria during the Black Summer that could make for a good beginner-level analysis without domain knowledge on terrain and biomass?

    • @spatial-exploration1478
      @spatial-exploration1478  3 ปีที่แล้ว +1

      @@JulianRoinSkovhus could be a couple of things. Different vegetation might have different intensities, but if you’re looking at those fires from last season I’d imagine you’d be seeing something. Could be the ranges are significant but your an order of magnitude out due to a small type-o in the ratio.