Delimitation of permanent protected areas of rivers in Brazil

Silvia S. Leonardi; Laércio M. Namikawa; João R. de F. Oliveira; Sergio Rosim

doi:10.1117/12.2066894

21 October 2014 Delimitation of permanent protected areas of rivers in Brazil

Silvia S. Leonardi, Laércio M. Namikawa, João R. de F. Oliveira, Sergio Rosim

Proceedings Volume 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI; 92391C (2014) https://doi.org/10.1117/12.2066894
Event: SPIE Remote Sensing, 2014, Amsterdam, Netherlands

Abstract

This paper presents a methodology to determine the permanent protected areas (PPA) of the the riverbanks. The amount of protected area depends on the river width and the size of each property which have a river running through or by it, as stated in the Brazilian forest code law. The rules are: 30 meters for rivers up to 10 meters wide, 50m for rivers 10 to 50m wide, 100m for rivers 50 to 200m wide, 200m for rivers 200 to 600m wide, and 500m, to rivers wider than 600m. The steps to determine the PPA buffer along the river are (1) construction of the triangular grid (TIN) that constitutes the basis for the calculation of the central axis of the river; (2) definition of the points representing the central axis of the river, called skeletonization; (3) definition of the river width; (4) calculation of the buffer for each river segment. PPA is defined by overlaying the river protected area polygon with the property polygon. A PPA area of a property can be reduced according to its size and according to public improvements like roads, permanent protected areas, for example. At the end the area to be preserved in a property is delimited.

Citation Download Citation

Silvia S. Leonardi, Laércio M. Namikawa, João R. de F. Oliveira, and Sergio Rosim "Delimitation of permanent protected areas of rivers in Brazil", Proc. SPIE 9239, Remote Sensing for Agriculture, Ecosystems, and Hydrology XVI, 92391C (21 October 2014); https://doi.org/10.1117/12.2066894

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