Vegetation of Southeast Asia Studies of Forest Types 1963-1965

Harvard .University Library. Indochina: selected list of references.
Harvard Univ. 108 pp. 19^0.
Heinsdijk, D. Forest type mapping with the help of aerial photographs
in the tropics. Tropical Woods. 102: 2f-k6 pp. 1 figs. 3 tables.
Oct. 15, 1955.
Technically, the construction of topographical maps only by
ground survey in tropics, covered with dense forests, has become
definitely obsolete. Aerial survey has largely replaced ground
survey in these regions. Nevertheless the necessity of making
forest inventories of email area* without the aid of aerial Photographs
is still common practice in the tropics. The study of the
possibilities of replacing forest inventories, at least in part,
by pure photo-interpretation ia still in its infancy.
The Forest Service of Guiana has adopted the following systems.
Detailed topographical maps are first prepared from aerial pictures.
These are used as basis for forest type maps made by photo-interpretation
and ground reconnaissance sampling. The forest type maps
are then used to carry out such detailed inventory as may be
necessary.
The Supterintendent do Piano ce Valorizacao Economica da Amazonia
initiated the inventory and forest research work of the Amazonian
forests. In this work they are assisted by the Food atid Agriculture
Organization of the United Nations with a teara of technicians. The
team has at its disposition numerous trimetrogon-aerial-photographs,
taken by flyers from the United States of A.nerj.ca. By using these
pictures to advantage, an attempt is being made to locate valuable
forests, where better (vertical) aerial survey work is rrifcjst needed,
and what kind of inventories should next be done. Owing to the
very simple topography and the large areas where forest t^pes are
more or less constant in composition, the results of this work are
very promising.
literature cited contains 6 references.
Heller, R.C., G.E. Doverspike and R.C. Aldrich. Indentification of
Tree Gpecies on large-scale -Panchromatic and Color Aerial Photographs.
Agriculture Handbook No. 26l. 17 pp. illusbr. Forest
Service, U. S. Department of Agriculture. July 196^.
This report describes results of research conducted near Ely,
Minn., in July 19^>0, and indicates the best type of film and scale
combination to identify tree species. Tnese results should be
applicable not only to inventories of timber but also to other projects,
such as to assess damage to forests by destructive enemies,
to appraise forest wildlife habitat, or to expedite forest management.
Data are given on study area and species; methods of obtaining
data, by gathering ground and aerial information; office procedures
and photo interpretation: and results obtained. A discussion and
conclusions are included.
The authors maintain that color film is superior to panchromatic
21U