scholarly journals CARACTERIZAÇÃO DO CONFLITO DE USO E OCUPAÇÃO DO SOLO NAS ÁREAS DE PRESERVAÇÃO PERMANENTE DO RIO APEÚ, NORDESTE DO PARÁ

FLORESTA ◽  
2012 ◽  
Vol 42 (4) ◽  
pp. 701
Author(s):  
Shislene Rodrigues De Souza ◽  
Maria de Nazaré Martins Maciel ◽  
Francisco de Assis Oliveira ◽  
Stephan de Almeida Jesuíno

ResumoDentro do contexto regional, entende-se que a ocorrência de problemas ambientais causados na região é procedente de uma formação histórica de colonização na Amazônia que desvalorizava os maciços florestais. Nesse sentido, visou-se realizar o mapeamento e a identificação do conflito de uso e ocupação nas áreas de preservação permanente dessa bacia de acordo com o Código Florestal (Lei nº 4.771/65) e a Resolução CONAMA nº 303, de 2002. A partir de mapas de cobertura vegetal e uso do solo e aplicando-se técnicas de geoprocessamento, chegou-se ao resultado de que as classes solo exposto e pastagem foram as unidades de uso que mais se evidenciaram no local. Dentro do contexto histórico da região, pode-se dizer que as atividades agropecuárias construídas ao longo do tempo não deixaram escapar as áreas de preservação permanente, ainda que o uso indevido de 22% das matas ciliares seja considerado baixo. AbstractConflict characterization over the use and occupation of soil in permanent conservation areas of river Apeú, northeastern Pará. Within the regional context, it is understood that  environmental problems occurrence in the region are result of the historical formation of colonization which devalued the massive Amazon forest. Therefore, mapping and identification of the conflict in Permanent Preservation Areas (PPAs) of this basin were performed, according to the Forest Code (Law no. 4.771/65) and the 2002 CONAMA determination registered under the number 303. It was used maps in which the natural cover and soil use were depicted by using GIS techniques, as result exposed soil and pasture revealed as the most apparent ones. Within the historical context of the region, it can be said that long agricultural activities reached the permanent preservation areas, in spite of the level  of 22% of riparian areas misusing is considered low.Keywords: River basin; geoprocessing; riparian areas.

2017 ◽  
Vol 314 (3) ◽  
pp. 1675-1681
Author(s):  
Elvis J. França ◽  
Elisabete A. De Nadai Fernandes ◽  
Felipe Y. Fonseca ◽  
Marcelo R. L. Magalhães ◽  
Mariana L. O. Santos

2019 ◽  
Vol 35 (9) ◽  
pp. 954-975
Author(s):  
Olutoyin Adeola Fashae ◽  
Rotimi Oluseyi Obateru ◽  
Adeyemi Oludapo Olusola

2021 ◽  
Vol 56 (3) ◽  
pp. 480-490
Author(s):  
Tatiane Camila Martins Silva ◽  
Ima Célia Guimarães Vieira ◽  
Marcelo Cordeiro Thalês

The goal of this study was to determine the anthropization evolution of the Guamá river basin in the years 2000, 2008 and 2018 by means of the Anthropic Transformation Index. Land use and cover maps were obtained from two databases, Project Mapbiomas (Brazilian Annual Land Use and Land Cover Mapping Project) and PRODES (Project for the Satellite Monitoring of the Brazilian Amazon Forest). The main classes defined in the mapping process are: forest, natural non-forest vegetation, agriculture and livestock farming, secondary vegetation, urban infrastructure, water and others. Secondary vegetation was considered as the area where the forest classes of Mapbiomas intersects with the deforested areas of PRODES, as determined by the map algebra operator. The expansion of agriculture and livestock farming achieved an increase of about 10%, while the forest was reduced in almost 10%. The Guamá river basin obtained an Anthropic Transformation Index of 4.44 in 2000, 5.04 in 2008 and 5.09 in 2018, going from a regular to a degraded state in 18 years. The occupation process caused major alterations in the natural components of the landscape over the course of 18 years, notably in the amount of forest. Protection of 35% of the remnant primary forest in the Guamá river basin is vital for the conservation of water resources vulnerable to changes in land use.


2021 ◽  
Author(s):  
Jo Halvard Halleraker ◽  
Janos Steiner ◽  
Ulrich Pulg ◽  
Johan Kling ◽  
Knut Alfredsen

<p>Fundamental assessment and understanding of fluvial geomorphological processes are crucial for a sustainable management of riverine ecosystems. There is a huge riverscape diversity across Scandinavia; from low gradient river habitats in the lowland (e.g. meanders and river delta in South of Sweden) to high alpine, post-glacial and morphologically highly variable rivers with water falls in West-Norway.</p><p>River basin managers in Sweden and Norway, are facing many of the same challenges related to types of pressures, biogeography, restoration needs and a huge number of water bodies. We have in this project exemplified how unbiased science-justified descriptors and indicators that are realistic to generate for many thousand rivers according to the EU Water Framework Directive (WFD), can be used as basis for ecosystem-based management.  </p><p>The coverage of high-resolution laser-scanning-data (lidar) surveyed for mapping purposes are soon covering most of the river basin districts in both countries. Green lidar penetrating water is so far only surveyed only in limited pilot areas. Therefore, we have mainly generated riverscape features from grey LIDAR in all the characterised catchments, like e.g. i) river slope, iii) sinuosity, iv) valley confinement and v) substrate composition.</p><p>Cluster riverscape analysis and assessment of more than 7100 unique river segment and ca 2041 km of rivers in 10 diverse catchments in Norway, and about 11 000 river segments and ca 1930 km of rivers in three catchments in Sweden have been included in the GIS databases. These rivers have different management regimes (e.g. several permanent protected rivers in Norway) and key species in focus (several national salmon rivers). Still some of the same hymo pressures (e.g. lack of lateral and/or longitudinal river continuum) seems to be quite prominent across management regimes, and therefore an intensified action plan for river restoration seems to be needed.</p><p>We have demonstrated that our GIS-techniques by combining high resolution lidar data and the river continuum concept is a cost-efficient methodology for assessing river habitats for both riparian and riverine biota in riverscapes of Scandinavia. By combining lidar with other georeferenced data publicly available like geomorphological maps, pressure data (e.g., road culverts), segmentations and semi-automatic GIS-techniques, huge areas (like catchments of several thousand km<sup>2</sup> and hundreds of river water bodies)  can be assessed in an objective transparent way already publicly available.</p><p><strong>Application</strong></p><p>The methodology and GIS database we have generated in this project are relevant for managements issues such as</p><p>a) defining <strong>reference conditions</strong> (to classify ecological conditions)</p><p>b) large scale analysis of habitat degradation of riverine and riparian biodiversity, (consistent river typologies – "<strong>digital twins</strong>")</p><p>c) pressure index to pinpoint more accurate and <strong>sustainable restoration</strong> strategies and measures, that also acknowledge climate adaptation (e.g. natural flow retention measures)</p><p>d)<strong> identifying significance of physical alterations (hymo pressures</strong> - e.g. longitudinal barriers for fish) vs climate change effects (e.g. due to changes in ice break up)</p><p>e)<strong> biodiversity management</strong>; habitat fragmentation, rare vs common habitat types (for updating next version of national Red lists of nature types and/or endangered riverine species)</p><p> </p>


Data ◽  
2018 ◽  
Vol 3 (4) ◽  
pp. 42 ◽  
Author(s):  
Anthony Vorster ◽  
Brian Woodward ◽  
Amanda West ◽  
Nicholas Young ◽  
Robert Sturtevant ◽  
...  

Non-native and invasive tamarisk (Tamarix spp.) and Russian olive (Elaeagnus angustifolia) are common in riparian areas of the Colorado River Basin and are regarded as problematic by many land and water managers. Widespread location data showing current distribution of these species, especially data suitable for remote sensing analyses, are lacking. This dataset contains 3476 species occurrence and absence point records for tamarisk and Russian olive along rivers within the Colorado River Basin in Arizona, California, Colorado, Nevada, New Mexico, and Utah. Data were collected in the field in the summer of 2017 with high-resolution imagery loaded on computer tablets. This dataset includes status (live, dead, defoliated, etc.) of observed tamarisk to capture variability in tamarisk health across the basin, in part attributable to the tamarisk beetle (Diorhabda spp.). For absence points, vegetation or land cover were recorded. These data have a range of applications including serving as a baseline for the current distribution of these species, species distribution modeling, species detection with remote sensing, and invasive species management.


Fisheries ◽  
2011 ◽  
Vol 36 (6) ◽  
pp. 278-288 ◽  
Author(s):  
Daniel C. Dauwalter ◽  
John S. Sanderson ◽  
Jack E. Williams ◽  
James R. Sedell

Author(s):  
Slavoljub Dragicevic ◽  
Nenad Zivkovic ◽  
Mirjana Roksandic ◽  
Stanimir Kostadinov ◽  
Ivan Novkovic ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document