Abstract
The paper deals with aspects of vegetation survey with the use of aerial photo-interpretation, especially the methodology developed during the last decade at the International Institute for Aerial Survey and Earth Sciences (I.T.C.), Enschede, The Netherlands.
The purpose of vegetation survey and aspects of the mapping scale are indicated, followed by a discussion on the different types of remote sensing imagery and their applicability in vegetation surveys. Three alternative (in vegetation survey often used complementary) approaches of applying photointerpretation are given : the landscape-guided approach, the photo-guided field survey and the photo-key method. The authors argue that the landscapeguided approach, characterized by a systematic photo-interpretation of the entire survey area as a basis for stratified fieldsampling is the best approach for vegetation survey, in particular for semi-detailed and reconnaissance scales.
Field sampling strategies are indicated and the use of photo-interpretation on the one hand as an indispensable tool for objective stratified sampling, on the other to delineate boundaries, is emphasized. For the classification of the field samples the use of sociological (ecological) species groups as floristic characteristics of vegetation types (communities), which serve in their turn as a base for the map legend, is recommended.
Finally the presentation of the legend units (in an illustrative format, placed in a two or three dimensional axes system in which the axes have a clear ecological significance) as developed in the I.T.C.-methodology is described and illustrated.
The purpose of vegetation survey and aspects of the mapping scale are indicated, followed by a discussion on the different types of remote sensing imagery and their applicability in vegetation surveys. Three alternative (in vegetation survey often used complementary) approaches of applying photointerpretation are given : the landscape-guided approach, the photo-guided field survey and the photo-key method. The authors argue that the landscapeguided approach, characterized by a systematic photo-interpretation of the entire survey area as a basis for stratified fieldsampling is the best approach for vegetation survey, in particular for semi-detailed and reconnaissance scales.
Field sampling strategies are indicated and the use of photo-interpretation on the one hand as an indispensable tool for objective stratified sampling, on the other to delineate boundaries, is emphasized. For the classification of the field samples the use of sociological (ecological) species groups as floristic characteristics of vegetation types (communities), which serve in their turn as a base for the map legend, is recommended.
Finally the presentation of the legend units (in an illustrative format, placed in a two or three dimensional axes system in which the axes have a clear ecological significance) as developed in the I.T.C.-methodology is described and illustrated.
Original language | English |
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Title of host publication | Documents Phytosociologiques, nouvelle serie, volume IV |
Publisher | J. Cramer Verlag |
Pages | 1029-1063 |
Number of pages | 36 |
ISBN (Print) | 9783768212335 |
Publication status | Published - 1979 |
Keywords
- ADLIB-ART-3865
- NRS