Design and evaluation of a computer aided calibration program for visual estimation of vegetation cover

• Compared to the number of field inventory programs that monitor change in vegetation with visual cover estimations, very few studies have been conducted to show how accurate thistype of data is. In addition, no previous studies have determined whether efficient calibration of field observers can improve such data. This study concerns the design and evaluation of a computer program consisting of images of vegetation on which the true cover of vegetation has been digitally calculated. The calibration consists of estimation with immediate feedback of the true cover. The results show that even a short time of calibration greatly improves the estimations and can also drastically reduce the influence of different backgrounds, aggregation patterns and personnel experience.

Ämnesord

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)

NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Nyckelord

Landscape

Landskap

Nationell intventering av av landskapet i Sverige (NILS)

Nationell intventering av av landskapet i Sverige (NILS)

Myllrande våtmarker

Thriving Wetlands

Levande skogar

Sustainable Forests

Ett rikt odlingslandskap

A Varied Agricultural Landscape

A Magnificent Mountain Landscape

Storslagen fjällmiljö

God bebyggd miljö

A Good Built Environment

Ett rikt växt- och djurliv

A Rich Diversity of Plant and Animal Life

Publikations- och innehållstyp

vet (ämneskategori)

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