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Table of Contents
Foreword
Preface
Glossary

Chapter 5: Vegetation

5.16: Colour Infrared Photo of Natural Vegetation in the Central Part of Riding Mountain National Park

This low-level, large-scale colour infrared photo shows natural vegetation in the central part of Riding Mountain National Park, north of Clear Lake. In this summer image both deciduous trees and coniferous trees are reflecting large amounts of infrared radiation and are therefore imaged as red. In some areas deciduous trees with rounded crowns producing a mottled texture 1 predominate, whereas in others coniferous trees with both a triangular shape and shadow 2 are in the ascendancy. West of PTH 10 3 radial displacement is large enough that trees are seen partly sideways on so that light-toned trunks 4, probably of birch trees (Betula papyrifera), are visible.

Three small lakes 5 that are almost black because they reflect little infrared exist in this area. The northernmost is ringed by low-lying aquatic vegetation 6 with some algae growth 7 offshore. Trees that are imaged as greenish-yellow have been killed by water in several locations 8.

The only indications of human influence are PTH 10 with a car traveling along it 9 and a small side road leading to a jetty 10.

Figure 5.16: Colour Infrared Photo of Natural Vegetation in the Central Part of Riding Mountain National Park

Figure 5.16: Colour Infrared Photo of Natural Vegetation in the Central Part of Riding Mountain National Park

Figure 5.16

Vertical colour infrared photograph: A31910-76

Flight height: 5,100 feet a.s.l.; lens focal length: 152.853 mm

Date:

Scale: 1:6,000 (approx.)

Location: Township 21, Range 19 WI

Map sheets: 1:250,000 62K Riding Mountain

1:50,000 62K/16 Whitewater Lake

1:125,000 MCR 207 Riding Mountain National Park