Suscetibilidade à erosão hídrica do solo: bacia hidrográfica do rio Capim (MA-PA)

2021 ◽  
Vol 43 ◽  
pp. e55
Author(s):  
Dênis José Cardoso Gomes ◽  
Aline Maria Meiguins de Lima ◽  
Edivaldo Afonso de Oliveira Serrão ◽  
Hernani José Brazão Rodrigues
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Soil Water ◽  
Soil Classification ◽  
Water Erosion ◽  
The Other ◽  
Warning Sign ◽  
Entire Axis ◽  
Land Cover Data

The objective of this study was to analyze the sustainability to water erosion in the Capim river/PA-MA. Acquired precipitation (GPCC), slope (TOPODATA project), land use and land cover data (MapBiomas) and pedology (Brazilian Soil Classification System) were obtained. Based on these variables, in a Geographic Information System environment, the product representing the sustainability to soil water erosion was generated. A sustainability gradient for soil water erosion was observed in the SE-NW direction, where it was higher near the mouth of the Capim River. The other variables were: clinical component presenting predominance of stability and high sustainability in the south of the basin; land use influences the entire axis of the basin, indicating instability in the medium-low Capim and in the extreme southeast. It was observed that the sustainability to erosion in the Capim watershed is motivated by intensified land use near the mouth. The zoning carried out in the basin is a warning sign for the municipalities of São Domingos do Capim, Rondon do Pará and Goianésia do Pará.

scholarly journals Automated Classification of Agricultural Lands Using GIS and NES

2018 ◽  
Vol 7 (4.38) ◽  
pp. 1146
Author(s):  
V. K. Kalichkin ◽  
A. I. Pavlova ◽  
A. F. Petrov ◽  
V. A. Smolyakov
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Interpolation Method ◽  
Ground Surface ◽  
Geographic Information ◽  
Automated Classification ◽  
Stream Power ◽  
Stream Power Index

The article proposes the methodology for the automated classification of uplands using Geographic Information System (GIS) and Neural Expert System (NES). Quantitative indicators of topography are used as the basis of the proposed classification. A database consisting of topographic, soil, and land use maps was created using ArcGIS 10 geographic information system. A topologically correct digital elevation model (DEM) was created by the ANUDEM interpolation method. The DEM contains the following maps: hypsometric, steepness and slopes exposure, plan, profile, common curvature of the ground surface, and cumulative runoff maps. The boundaries of elementary surfaces (ES), which are homogeneous morphological formations, are established. Parameters characterizing the Stream Power Index (SPI) are taken into account. The essence of the proposed classification consists in attributing of ES to a certain group of lands based on aggregate of features. To do this, partial scales were created, containing indicators of topography, soil cover, land drainage conditions, as well as the degree of erosion development. The authors formed knowledge base for traning the NES using GIS database and partial scales of estimates. Teaching of neural network was carried out. The classification and topology of land was carried out by means of the NES. The uplands are distributed in flat and slightly convex areas. They are characterized by the following indicators: the curvature of the ground surface: plan curvature (0 – 0.03), profile curvature (0 – 0.15), common curvature (0 – 0.22); slope angles (less than 1.5о); horizontal dissection in elevation (less than 0.5 km/km2), vertical dissection (less than 5 m); and SPI (from -13.80 to -6.47). Electronic map of uplands of LLC «Salair» land-use area was created in the ArcGIS 10 environment.  

scholarly journals PEMANFAATAN CITRA SATELIT LANDSAT 8 UNTUK MEMETAKAN SEBARAN TITIK PANASSEBAGAI INDIKASI PENINGKATAN SUHU PERMUKAAN TANAH DI KABUPATEN KUTAI TIMUR

2021 ◽  
Vol 46 (3) ◽  
pp. 383
Author(s):  
Donny Dhonanto ◽  
Nurul Puspita Palupi ◽  
Ghaisani Salsabila
Keyword(s):  
Land Use ◽  
Information System ◽  
Data Analysis ◽  
Geographic Information System ◽  
Surface Temperature ◽  
Land Surface ◽  
Maximum Temperature ◽  
Landsat 8 ◽  
Landsat 8 Oli ◽  
Area Distribution

 Transformation of land-use cause forest area decrease that will affect microclimate (weather tends heat), thus hotspot may possible to scattered in that area and raise the transformation of surface temperature. The objective of this research is to determine the indication of surface temperature in the East Kutai District. The advantage of this research is to give information about hotspot area distribution based on land use and relate between hotspots with surface temperature increase so it is supposed to be one of the consider to transform land use in East Kutai District. This research was held from April until May 2019 at the Laboratory of Carthography and Geographic Information System, Faculty of Agriculture, Mulawarman University. This research using calculation of Land Surface Temperature (LST) value to determine the transformation of surface temperature in East Kutai District by data analysis from Landsat-8 OLI/TIRS satellite. Hotspot area distribution adapted to map of land-use so we found the source of the hotspot. The result of the research shows there are about 6 hotspots in land-use of plantation in 2017 and the increase of the surface temperature is not static cause by depending of rainfall in East Kutai District. Increasing of surface temperature in East Kutai District in October 2013 become 22.35 oC (for minimum temperature), whereas in May 2017 become 37.24 oC (for maximum temperature). 

scholarly journals The comparative analysis of selected interactive data presentation techniques on the example of the land use structure in the commune of Tomice

2016 ◽  
Vol 48 (3) ◽  
pp. 115-127
Author(s):  
Karol Król ◽  
Barbara Prus
Keyword(s):  
Land Use ◽  
Information System ◽  
Comparative Analysis ◽  
Geographic Information System ◽  
Input Data ◽  
Technical Specification ◽  
Data Presentation ◽  
Land Use Structure ◽  
Programming Tools ◽  
Interactive Data

Abstract The authors present the results of a comparative analysis of selected techniques and programming tools for building interactive data presentation in the form of diagrams and maps generated in the browser. The results of an inventory of land use structure, which are a part of a geographic information system database of the commune of Tomice in district of Wadowice, were employed as input data. The research has shown that the tested tools have a similar design capacity; which makes it difficult to determine which of them is the best. Different factors contribute to choosing a particular tool. They include technical specification, project budget, license conditions, technical support and visualization possibilities.

scholarly journals The Use of Remote Sensing and Geographic Information System Techniques to Determine Relationships between Land Use and Landform

2014 ◽  
Vol 3 (2) ◽  
Author(s):  
Tülay TUNÇAY ◽  
İlhami BAYRAMİN ◽  
Hasan Sabri ÖZTÜRK ◽  
Mümtaz KİBAR ◽  
Oğuz BAŞKAN
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Geographic Information

Calculation of Land Consolidation Potential Based on GIS

2014 ◽  
Vol 580-583 ◽  
pp. 2769-2773
Author(s):  
Yan Hua Liu ◽  
Wei Qing Chen
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Geographic Information ◽  
Land Consolidation ◽  
Cultivated Land ◽  
Thematic Maps ◽  
Residential Land ◽  
Rural Residential Land ◽  
In Virtue Of

Through the analysis of land use actuality, this paper summarizes the characteristics of land use, in virtue of geographic information system (GIS) platform, the database of land consolidation is constructed, combining with different calculation models of cultivated land and rural residential land consolidation potential, the consolidation potentials of cultivated land and rural residential land are calculated, and the thematic maps about land consolidation potential of each village and town in study area are mapped out. The results show that the land consolidation areas are mainly concentrated in the middle of study area.

scholarly journals USO DE GEOTECNOLOGIAS NA LOCAÇÃO ESPACIAL DE TORRES PARA DETECÇÃO DE INCÊNDIOS FLORESTAIS NO SEMIÁRIDO NORDESTINO

FLORESTA ◽  
2014 ◽  
Vol 44 (1) ◽  
pp. 133 ◽  
Author(s):  
Fellipe Ragner Vicente de Assis ◽  
Izaque Francisco Candeia de Mendonça ◽  
José Evanaldo Rangel da Silva ◽  
Joedla Rodrigues de Lima
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Environmental Analysis ◽  
Large Volume ◽  
Potential Risk ◽  
Forest Fires ◽  
Fire Risk ◽  
Test Efficiency ◽  
Extreme Risk

A possibilidade de manipular um grande volume de informações faz do SIG uma ótima ferramenta para análises ambientais. O objetivo do estudo foi identificar locais ideais para implantação de torres de vigilância de incêndios florestais, avaliar a potencialidade do SIG utilizado e testar a eficiência da metodologia proposta em áreas de caatinga. O estudo foi realizado na microbacia do rio do Saco, Santa Luzia, PB, Brasil. Foram gerados mapas de declividade, uso da terra, orientação das encostas, altimetria, temperatura, precipitação e risco potencial de incêndios, sendo correlacionados com as cotas de maior altitude e a proximidade de estradas para alocação das torres. Os resultados mostraram que5863,1 ha(61,6%) da área possuem elevado risco de incêndio. A torre 1 (T1) proporcionou a maior visualização (41,2%) das áreas de alto a extremo risco. Já a combinação de T1 + T5 proporcionou a maior visualização da área (74,9%). Para o uso de uma torre, foi indicada a instalação de T1; para combinação entre torres, a melhor associação foi T1 + T5. A metodologia se mostrou aplicável em outras áreas com características fisiográficas semelhantes. As rotinas do Sistema de Informações Geográficas Idrisi (SIG Idrisi) foram capazes de atender satisfatoriamente aos procedimentos metodológicos utilizados.Palavras-chave: Bacia hidrográfica; geoprocessamento; risco de incêndio. AbstractUse of geotechnology for towers placement in order to detect forest fires in northeastern Semiarid. The ability to handle a large volume of information makes GIS a great tool for environmental analysis. This research aims to identify ideal sites for installation of watchtowers forest fires, in order to evaluate the potential of SIG as well as to test efficiency of the proposed methodology in areas of Caatinga. The study was conducted in the watershed of the Saco River, Santa Luzia - PB, Brazil. We generated maps of slope, land use, orientation of slopes, altitude, temperature, precipitation and potential risk of fire, correlated with the dimensions of higher altitude and proximity of roads to towers installation. The results revealed that 5863.1 ha (61.6%) of  the area is at high fire risk. Tower 1 (T1) presented the better visualization (41.2%) of areas of high to extreme risk. The combination of T1 + T5 had as result better visualization of the area (74.9%). For the use of one only tower, it was indicated T1, in relation to combination the best one was the association of T1 + T5. The methodology proved its applicability in other areas with similar physiographic characteristics. Geographic Information System Idrisi (SIG Idrisi) routines were able to meet satisfactorily the methodological procedures.Keywords: Watershed; geoprocessing; risk of fire.

Are Measures Derived From Land Use and Transport Policies Associated With Walking for Transport?

2018 ◽  
Vol 15 (1) ◽  
pp. 13-21 ◽  
Author(s):  
Jerome N. Rachele ◽  
Vincent Learnihan ◽  
Hannah M. Badland ◽  
Suzanne Mavoa ◽  
Gavin Turrell ◽  
...  
Keyword(s):  
Land Use ◽  
Information System ◽  
Geographic Information System ◽  
Public Transport ◽  
Multinomial Logistic Regression ◽  
State Level ◽  
Geographic Information ◽  
Transport Services ◽  
Spatial Measures ◽  
Traffic Volumes

Background: There is growing urgency for higher quality evidence to inform policy. This study developed geographic information system spatial measures based on land use and transport policies currently used in selected Australian states to assess which, if any, of these measures were associated with walking for transport. Methods: Overall, 6901 participants from 570 neighborhoods in Brisbane, Australia, were included. Participants reported their minutes of walking for transport in the previous week. After a review of state-level land use and transport policies relevant to walking for transport across Australia, 7 geographic information system measures were developed and tested based on 9 relevant policies. Data were analyzed using multilevel multinomial logistic regression. Results: Greater levels of walking for transport were associated with more highly connected street networks, the presence of public transport stops, and having at least 2 public transport services per hour. Conversely, neighborhoods with shorter cul-de-sac lengths had lower levels of walking for transport. There was no evidence of associations between walking for transport and street block lengths less than 240 m or traffic volumes. Conclusions: These findings highlight the need for urban design and transport policies developed by governments to be assessed for their impact on transport-related physical activity.

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