site network

The baseline

Essential to any conceptual or predictive study of a 'system' is a reference  to real examples of its state and dynamics. Concepts and models should consider how the past has given rise to the present before they can can hope to predict how the present can be the basis of a sustainable future. At the beginning of this study, there was little systematic information at the scale of the field on either present or past states.

Historical trajectories

The condition of soil and farming in the past is not well documented. The major surveys of soil and vegetation provide useful background but are too infrequent. The main systematic source of data is the June Agricultural Census from which the areas grown with different crops and grass can be collated. Ten areas, defined by groups of parishes, shown circled in red in the map to the left, were selected as covering most types of farming within the arable-grass system. The Scottish Government provided data on cropped areas in each group, as electronic files from 1982 and as scanned paper documents before that. Other sources are being used to complement the information from the June census, notably surveys of pesticides and fertilizer.

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