IAG 1999 Regional Conference on Geomorphology
Gloria Hotel of Rio de Janerio, Brasil, July 17-22, 1999
Abstracts - Sandra Baptista da Cunha and Antonio Jose Teixeira Guerra (Eds.)

ON ANTHROPOGEOMORPHOLOGY

Rodrigues,C.

Universidade de São Paulo, SP, Brasil


Around 1970 the growth of environmental problems following technical progress, increasing public concern about the depletion of Earth Resources as well as the awareness of alterations on global processes and cycles led to a growing need for interdisciplinary research on assessment of anthropic impacts on natural systems.

On the one hand, at that time methodological issues were available but, on the other hand, they weren't taken on account. For example, the anthropic approach shoud take advantage of systems theory principles, detailed geomorphological cartography, several time-spatial scales, the frequence-magnitude approach, etc.

Analyses of literature on pure and applied geomorphology, and Brazilian studies on environmental planning, allow to conclude about general needs for recovering and employing basic principles and notions of the geomorphological approach to identify, measure, and predict the effects of human actions. The review of literature enable to propose a list of methodological procedures for the development of anthropogeomorphology according to the following basic items:

#To look at human actions as geomorphological actions on terrestrial surface. It means that human activities promotes changes in form attributes, materials attributes and position, and processes rates, balances, and vectors;
#To investigate patterns of human actions meaningful for morphodynamics;
#To investigate cumulative and dynamic history of human interventions, starting from pre-disturbance stages;
#To employ many supplementary time-space scales, especially large scales, i.e., 1:10000 and larger, or time intervals, i.e., days, hours, seconds...;
#To employ and investigate new possibilities of detailed geomorphological cartography;
#To take advantage of systems approach, and dynamic equilibrium theory;
#To utilize thresholds notion and magnitude/frequence analysis;
#To emphasize global/integrated analysis of natural systems (basins, slopes,etc.) to improve measurements and estimations of human intervention effects;
#To take in account the particularities of morphoclimatic contexts, and
#To amplify monitoring of rates, balances, and vectors of derivative processes.

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