Amelioration of Soil by Trees

A review of current concept and practices

image of Amelioration of Soil by Trees
The utilisation of marginal and degraded lands, often associated with regions of high population densities, has high international priority for food and fuel production, erosion control and conservation. It is commonly believed that the enhancement of fertility of these soils can be achieved by the use of trees, particularly by manipulation of the associated coil biological processes. In this volume, this belief is subject to initial scrutiny and various proposals are made for the research to investigate the links between trees and soil fertility.

This volume represents the collection of papers presented at the Commonwealth Science Council’s Agroforestry meeting in India in March 1986 for Africa and Asia.



Amelioration of Soil by Trees in the Tropics

Although high insolation and precipitation regimes offer the prospect of high biological production in the tropics in comparison to other climatic zones, a variety of factors both physical and cultural mitigate against its realization. Of particular importance among these are poor and edaphic soil conditions, impoverishment of lands by intensive use over successive generations, inadequate knowledge o f plant and animal species especially trees for manipulation by human societies, and inadequacy of technology in the cultural repertoire of human societies to optimise land use and landscape integration. Nevertheless, knowledge about soils, trees and agro-ecological interactions is several millenia old having emerged quite independently in several tropical civilisations.


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