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Previous issue date: 2015-02-12 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES / Neste trabalho a morfodin?mica da paisagem foi utilizada para verificar a intensidade e
import?ncia das mudan?as exercidas pelo homem sobre o meio ambiente ao longo do tempo,
no munic?pio de Natal-RN. Foi analisada a ocupa??o sobre ?reas naturais parcialmente
preservadas, mas ambientalmente fr?geis, como as matas ciliares, cobertura vegetal nas
margens dos cursos d??gua, que desempenham papel de reguladoras do fluxo h?drico, e as
dunas, que garantem a r?pida recarga dos aqu?feros. Foram identificados e caracterizados os
impactos da expans?o urbana nas zonas Sul e Oeste do munic?pio de Natal, por meio de um
mapeamento detalhado, no per?odo entre 1969 e 2013 das principais ?reas de Preserva??o
Permanente - APP?s (margens de rios e lagoas, e dunas e remanescentes) e suas altera??es
temporais. Para isto foram usadas fotografias a?reas e imagens de sat?lite, dados altim?tricos,
al?m de informa??es pr?-existentes, o que permitiu a cria??o de um banco de dados espaciais,
al?m de mapas de evolu??o das ?reas imperme?veis, evolu??o do uso e ocupa??o e um
Modelo Digital de Terreno (MDT) a partir de curvas de n?vel com equidist?ncia de 1 metro.
Com base neste estudo ? apresentado um diagn?stico da situa??o ambiental e do estado de
conserva??o das ?reas naturais, ao longo dos ?ltimos 44 anos, frente ?s press?es antr?picas.
Em linhas gerais, verificou-se que a ocupa??o urbana avan?ou cerca de 60% sobre as ?reas
naturais estudadas. Esse avan?o foi crescente at? o ano de 2006, quando se observou uma
desacelera??o neste processo, excetuando a Zona de Prote??o Ambiental (ZPA) 03, onde est?
o rio Pitimb? e a sua APP, que experimentou uma perda mais significativa de ?rea. A
ocupa??o urbana afetou a drenagem natural e contribuiu para a contamina??o das ?guas
subterr?neas de Natal, devido ao aumento da ?rea impermeabilizada, do lan?amento de
res?duos l?quidos e s?lidos, bem como a retirada da mata ciliar. Alterou de modo irrevers?vel a
paisagem natural, e reduziu a qualidade e quantidade dos recursos h?dricos necess?rios ?
popula??o. Dessa maneira, ? necess?rio que se estimule a ado??o de medidas de planejamento
de uso e prote??o das APP?s, com a preserva??o da Regi?o do San Vale inserida na ZPA 01,
al?m de integrar mais remanescentes de dunas, em bom estado de conserva??o, a esta ZPA,
devido ? import?ncia destes remanescentes para o meio ambiente e na manuten??o da
qualidade de vida. Sugere-se, tamb?m, prote??o das ?reas de drenagem, como as APP?s das
lagoas e do rio Pitimb?. Finalmente, espera-se que este estudo possa auxiliar na tomada de
decis?o, de ?rg?os gestores no planejamento urbano e ambiental do munic?pio. / In this work the landscape morphodynamics was used to check the strength and importance of
the changes carried out by man on the environment over time, in Natal-RN municipality. The
occupation of partially preserved natural areas was analyzed, but environmentally fragile,
such as riparian forests, vegetation on the banks of waterways, which play regulatory role of
the water flow, and the dunes, which guarantee the rapid recharge of aquifers. The impacts of
urban sprawl in Natal Southern and West zones Were identified and characterized, through a
detailed mapping in the period between 1969 and 2013 the main Permanent Preservation
Areas - PPA (banks of rivers and lagoons, and dunes remaining) and their temporal changes.
For this were used aerial photographs and satellite imagery, altimetry data, and pre-existing
information, which allowed the creation of a spatial database, and evolution of maps of
impervious areas, evolution of the use and occupation and Digital Terrain Model (DTM) from
contour lines with contour interval of 1 meter. Based on this study presents a diagnosis of the
environmental situation and the state of conservation of natural areas, over the last 44 years,
compared to human pressures. In general, it was found that the urban settlement has advanced
about 60% of studied natural areas. This advance was growing by the year 2006, when there
was a slowdown in the process, except for the Environmental Protection Zone (EPZ) 03,
where the river Pitimb? and your PPA, which experienced a more significant loss area. The
urban occupation affected the natural drainage and contributed to the contamination of
groundwater Natal, due to increased sealed area, the release of liquid and solid waste, as well
as the removal of riparian vegetation. Changed irreversibly the natural landscape, and reduced
the quality and quantity of water resources necessary for the population. Thus, it is necessary
to stimulate the adoption of use and protection of PPA planning measures, to the preservation
of the San Valley Region inserted into the EPZ 01, and integrate more remaining dunes, in
good condition, this EPZ, due to the importance of those remaining on the environment and
the maintenance of quality of life. It is suggested, also, protection of catchment areas, such as
PPA ponds and Pitimb? River. Finally, it is expected that this study can assist the managers in
making decisions in urban and environmental planning of the municipality
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/19694 |
| Date | 12 February 2015 |
| Creators | Costa, Joseane Dunga da |
| Contributors | 12714585434, http://lattes.cnpq.br/5120081491389865, Ingunza, Maria Del Pilar Durante, 00871819406, http://lattes.cnpq.br/1925954531585024, Fonseca, Vanildo Pereira da, 18825036434, http://lattes.cnpq.br/6898507012033204, Lima, Eduardo Rodrigues Viana de, 28281004487, http://lattes.cnpq.br/2941361024141417, Amaral, Ricardo Farias do |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM ENGENHARIA SANIT?RIA, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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