Systematic Assessment of Maps as Source Information in Landscape Change Research
Niina Käyhkö (Vuorela); Risto Kalliola; Petteri Alho
https://urn.fi/URN:NBN:fi-fe2021042720097
Tiivistelmä
A methodology is proposed for systematic map assessment to contribute to
landscape-change research. Two major topic areas are dealt with,
namely: content, quality and usefulness of landscape information on
different maps; and methods used in the spatial conversion of maps into
digital systems (e.g. geographical information systems). The major focus
is on information about physical landscape characteristics (e.g. land
cover) and land uses. The approach was tested using a sequence of nine
large- and medium-scale basic maps of the island of Ruissalo in SW
Finland from between 1690 and 1998. Fundamental differences were found
in the thematic consistency of landscape information, mainly related to
the scale, purpose and generalization of landscape information on
different maps. Spatial matching was tested for a set of three old maps
using four image rectification functions. The results showed that
spatial matching of old maps is difficult, and success in rectification
is influenced by many factors. Evaluation and selective transformation
of landscape information from maps and the use of supportive information
from other sources can assist in landscape-change analysis based on map
sequences.
Kokoelmat
- Rinnakkaistallenteet [19207]