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Effizienz bei ökologischen Erhebungen mit QField steigern

von Ryan Bell, GIS Consultant, Delta-Simons Environmental Consultancy

Zielsetzung

Effizientere Durchführung von ökologischen Erhebungen als es bisher mit traditionellen, nicht-digitalen Techniken möglich war, unter Verwendung von QField als Instrument für eine standardisierte und flexible Felddatenerfassung.

Projektvoraussetzungen

To facilitate effective field work, regular consultation with the Ecology team is required to ensure that QField projects are prepared appropriately. Firstly, basemaps comprising aerial imagery and proposed development plans are prepared by georeferencing and constructing pyramids in QGIS. Point, line and polygon vector layers are then created to support digitisation and associated data collection. Using a range of widgets, attribute fields are customised to meet the requirements of the Ecology team. These include:

Stil

drop-down list of selectable styles tailored for conducting ecological surveys

Skale

drop-down list of selectable scales for point and line feature

Information

space for inserting a feature description

Bild

location for images to be captured and stored

Geometrie

contains self-populated geometry values, e.g. area, perimeter, length

Zeitstempel

records the time and date that a feature was created/last modified

Figure 1 - Overview of the traditional workflow in ecological surveying at Delta-Simons compared with the workflow created using QField. Single-headed arrows indicate the direction of one-way communication, whereas double-headed arrows indicate two-way conversation.
Figure 1 - Overview of the traditional workflow in ecological surveying at Delta-Simons compared with the workflow created using QField. Single-headed arrows indicate the direction of one-way communication, whereas double-headed arrows indicate two-way conversation.

Ergebnis

Delta-Simons are saving approximately 40% of the time previously consumed by traditional ecological field data collection. QField has significantly improved the ecological surveying workflow by:

  • Keine erneute Erstellung von GIS-Ausgaben aus physischen Zeichnungen mehr erforderlich
  • Verringerung der für GIS-Ergebnisse erforderlichen Änderungen
  • Verbesserung der Kommunikationskanäle (siehe Abbildung 1)
  • Verbesserung der Genauigkeit und Qualität der Daten

Delta Simons

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