• Info
  • User Guide
  • How to do chemical tests
  • Lichen ID Guide
  • Record
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Zone
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Record

  • General
  • Trunks
  • Branches
  •         Tree type:                                    
  • Date
  • Location
  • Comment

To see your results after you have finished recording Trunks and/or Branches please click the results button (bottom right).

To see your results after you have finished recording Branches and/or Trunks please click the results button (bottom right).

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Comment

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Please add any extra info about your survey.

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Date

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Please enter the date of the recording.

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Tree Part
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Compass

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Location

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  • GPS
  • Map
  • Grid Ref

Please tap on the map to select your location.

Please provide a GB Grid Reference.
e.g. "TQ 28170 77103"

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Results

  • Trunk

    Nitrogen Air Quality Index (NAQI): N/A
    Lichen indicator score (LIS): N/A

  • Branch

    Nitrogen Air Quality Index (NAQI): N/A
    Branch lichen indicator score (LIS): N/A

  • The lines on this graph indicate mean values for the LIS taken from a UK wide survey.

    The LIS NAQI relationship for branches should be read from the broken line and for trunks from the solid line.

  • Sites that are designated as:

    'Clean' have an NAQI between 0 and 0.5,
    'At risk' NAQI > 0.5-0.85,
    'Nitrogen polluted' NAQI 0.86-1.25,
    'Very Nitrogen polluted' NAQI > 1.25.

    See Guide for further guidance.

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