Given the monumental challenges facing today's world - widespread poverty, urban blight, illiteracy, tropical deforestation and the threat of nuclear war, to name only a few - it may seem quite irrelevant to devote an issue of Unasylva to the rather tame-sounding subject of urban forestry.…
This report covers the work of forest resources mapping undertaken by the Remote Sensing Unit of the Forestry Development Authority of Liberia between March 1982 and June 1984. Its principle aim is to reassess the actual forest cover area of Liberia by interpretation of recent aerial photography…
Freezaillah B.C. Yeom of Malaysia, drawing upon his experience as a forest-resources manager in Southeast Asia, evaluates available information and weighs both positive and negative aspects of the development of lesser-known species within the wider context of resource-management efforts. From…
This paper is written in fulfilment of the requirement of the Associate Regional Advisers (ARA) Programme which is run under the auspices of the Forest Industries Advisory Group (FIAG) for Africa. The objective of the Forest Industries Advisory Group is to assist African countries in promoting…
An international journal of forestry and forest industries
This manual is designed to give detailed, practical advice on the various methodologies of organic recycling. Blue-green algae form a self-sufficient system which is capable of fixing atmospheric nitrogen in organic forms and which grows upon a free water surface. It is thus ideally suited for…
An international journal of forestry and forest industries
An international journal of forestry and forest industries
Methods for evaluating nutrient status in order to obtain better plant growth and increased yield are constantly being developed and improved. New analytical techniques and procedures for soil and plant analysis have been invented and tested in many countries and laboratories. There have been…
An international journal of forestry and forest industries
The pressing need for increased agricultural production in the years ahead can only be met by more efficient use of our land and water resources including more widespread and better irrigation in those regions where rainfall is inadequate. Production gains will be shortlived unless the attendant…