TITLE:
Modeled Surface Observations for Spatial Analysis of Landscape Dynamics
AUTHORS:
Manoel do Couto Fernandes, Tata Lacale Canal dos Santos, Pedro Henrique Ferreira Coura, Paulo Márcio Leal de Menezes, Alan José Salomão Graça
KEYWORDS:
DEM; Modeled Surface; Landscape Change
JOURNAL NAME:
Journal of Geographic Information System,
Vol.5 No.4,
July
30,
2013
ABSTRACT: Landscape
dynamics is a geoecological characteristic that defines changes in a landscape
spatial structure and function during an established time scale. In this kind
of analysis, geoprocessing is an essential tool, because it combines several
technologies that help in this work. However, the majority of landscape dynamic
investigations do not consider the dimensionality of the data and the
information to be used, which is projected not measured from modeled (real)
surface observations, and presents underestimated results, mainly in irregular
relief landscapes. Considering that, this paper intends to assess the
difference between observations on modeled and planimetric surfaces on the
interpretation of landscape dynamics. The study was conducted in the massif of
Tijuca, Rio de Janeiro (Brazil) using
land use and soil cover maps of different times and a digital elevation models
(DEM) generated based on a triangular irregular. The results show an increase
of dynamic areas values when observations were carried out on modeled surface,
as well as the deforestation rate (17.57% or 0.13 km2/year). This survey showed higher
values in comparison with observations on planimetric surface, characterizing
more realistic interpretations of how the structural elements and analyses made
from these are structured in the landscape.