A spectroradiometer for airborne remote sensing

摘要: Color, color infrared, and water penetration aerial photographs at various scales were assessed for identification, mapping, inventory of macroalgal vegetation along extensive shoreline Georgia Strait in the north-east Pacific. Natural proved to be most useful definition submerged depths 7 m, while CIR natural together provided best above-water intertidal seaweed vegetation. Using both films, exposed under rarely occurring optimum weather tide conditions, with aid ground data, total 11 units classified mapped a scale 1/10,000. Boundaries unit containing valuable red resource, Iridaea cordata, could defined equally well 1:10,000 as 1:2,500. A truth program was designed which revealed close relation between aerially I. cordata field-observed units. Air photography complimentary data collection found effective establishing baseline resource use, management, conservation, will value environmental impact assessment. /Author/