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Title: The improvement of agricultural land evaluation through a computer-based land resources information system
Author: Doka, El-Abbas
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1983
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The study was based on four counties in South-East England (Kent, Surrey, East and West Sussex). The location of the region and the variation in the physical factors (e.g. climate, geology, physiography, drainage and soils) influence the land use all over the region. Arable farming, the main agricultural land use, is dominated by the three crops studied (wheat, barley and potatoes). Land resources data on geology, soils, site characteristics and climate was collected from the whole region with different levels of details. Land use data from all the parishes and farm management data for different seasons from about 200 farms was also included. Due to the large volume of data, a Data Base Management System/SIR was used for storing and retrieving the data. The data base was also used to calculate some agroclimatic variables and to interface with other programmes for statistical analysis. Production and economic features were studied in relation to the main land evaluation systems in England and Wales (The Agricultural Land Classification System and the Land Use Capability System). Although the results showed that the production and the economic factors are probably correlated with the Grades and Classes of both systems, some contradictions were also revealed. Physical land resource data seemed to be related to economic measures but not always as expected. Although in general, the results are in conformity with the land evaluation systems, particularly the ALC, unquantifiable social and economic factors seem to have a large effect on crop production and farm profitability. More work on the same lines is essential to determine objectively the factors, other than the physical, which create the discrepancy between production data and the evaluation systems. These factors should be included with the physical factor in the agricultural land evaluation systems.
Supervisor: Burnham, C. P. Sponsor: Sudan Government
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available