1 Subjects: “...thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information...”

2 Subjects: “...thema EDItEUR::U Computing and Information Technology::UD Digital Lifestyle and online world...”

3 Subjects: “...volunteered geographic information...”

4 Subjects: “...spatial information...”

5 Subjects: “...information perception of fruit trees...”

6 Subjects: “...information entropy theory...”