scholarly journals Dinâmica espaço-temporal do uso e ocupação da terra no Município de Ribeirão Preto, São Paulo, Brasil.

2021 ◽  
pp. 88-120
Author(s):  
JOAQUIM ERNESTO BERNARDES AYER ◽  
◽  
LUCA LÄMMLE ◽  
DANILO FRANCISCO TROVO GAROFALO ◽  
RONALDO LUIZ MINCATO ◽  
...  
Keyword(s):  
Land Use ◽  
Natural Resources ◽  
Green Revolution ◽  
Industrial Effluent ◽  
Temporal Analysis ◽  
Aerial Photographs ◽  
Holding Companies ◽  
Aquifer System ◽  
Surface Water Resources ◽  
Territorial Planning

The territorial planning in the Southeast Region of Brazil was marked by marked economic cycles of land use and occupation. To assess this dynamic, surveys of historical and natural data from Ribeirão Preto – SP. In this context, the method of space-temporal analysis was adopted, based on the mapping of land use and occupation, from the reconstitution of the map of the use of 1910, together with the mapping of satellite images and aerial photographs by the method of oriented classification the object of 1973, 1985, 1995, 2005, 2015, 2019. The objective was to quantify the uses, trace trends, evaluate the effectiveness of public policies and highlight potential and environmental risks. The maps reveal the growth and expansion of agricultural frontiers, which indicates a change in the region's economic base, which has gone from being a major coffee producer to a sugarcane and agribusiness production hub. Such changes reflect the drop in the price of coffee and the federal programs to encourage the production of sugar and ethanol. Thus, the land ownership structure has not undergone major changes and continues to be dominated by large properties, but now managed by holding companies and anonymous society. Urbanization took place at an accelerated rate and was driven by the green revolution, mainly from 1960, resulting in the strong rural exodus in the region. This process resulted in a series of socio-environmental impacts, related to irregular occupations of areas for housing and increased urban and rural violence, in addition to the increased demand for natural resources, such as, for example, the increased demand for water and consequently of the waters of the Guarani Aquifer System, which resulted in the lowering of the water table and caused restrictions on its use. In addition, the region's native vegetation has been almost completely deforested and the soils show signs of accelerated erosion locally, which tends to have a deleterious impact on surface water resources, which are already suffering from municipal and industrial effluent discharge. In this context, the Ribeirão Preto region is a global agricultural economic hub, which depends on its natural potential. Therefore, the sustainable planning of territorial use and occupation should have as a priority to protect and preserve these natural resources, given the historical dependence of the municipality on it.

scholarly journals TEMPORAL ANALYSIS OF SOIL OCCUPATION IN MUCURI WATERSHED BETWEEN 1989 AND 2015

2020 ◽  
Vol 28 ◽  
pp. 58-68
Author(s):  
Rafael Alvarenga Almeida ◽  
Luan Viana dos Santos ◽  
Daniel Brasil Ferreria Pinto ◽  
Caio Mário Leal Ferraz
Keyword(s):  
Land Use ◽  
Temporal Analysis ◽  
Aerial Photographs ◽  
The Social ◽  
Anthropogenic Action ◽  
Economic Reality ◽  
Remote Sensing Techniques ◽  
The Relationship ◽  
Land Use And Cover ◽  
Made In

Anthropogenic action has caused intense changes in land use and cover over the decades. Identifying and knowing these changes makes it possible to measure the impacts that can be generated as well as to identify patterns of the development of a particular region and the relationship between society and land use. Thus, it is intended to identify the changes made in the land use and occupation of the Mucuri river basin between 1989 and 2015. So, this study used remote sensing techniques and tools besides aerial photographs to map the region and to identify surface behavior. Within the Mucuri basin, the soil had been mostly occupied by classes of forest and agricultural area, consistent with the social and economic reality of the region over the last decades. The changes that have occurred indicate a reduction in water availability, growth in urban occupation and, in many cases, soil and vegetation cover deterioration.

scholarly journals Flood Mapping Proposal in Small Watersheds: A Case Study of the Rebollos and Miranda Ephemeral Streams (Cartagena, Spain)

Water ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 102
Author(s):  
Valentina Betancourt-Suárez ◽  
Estela García-Botella ◽  
Alfredo Ramon-Morte
Keyword(s):  
Land Use ◽  
Water Resources ◽  
Flood Hazard ◽  
Satellite Image ◽  
Temporal Analysis ◽  
Mediterranean Coast ◽  
Geographical Information ◽  
Aerial Photographs ◽  
Hazard Maps ◽  
Flood Hazard Maps

Anthropogenic landscape changes cause significant disturbances to fluvial system dynamics and such is the case of the watersheds studied near the Spanish Mediterranean coast (Cartagena). Economic growth resulted in the addition of external water resources from the Tajo River (1979) as part of the National Water Plan (1933). Irrigation water has caused the water table to rise since 1979. Furthermore, water resources have boosted urban touristic expansion, industrial estates, and road infrastructures. This study presents a diagnosis of the official flood hazard maps by applying remote sensing techniques that enable the identification of (i) areas flooded during recent events; and (ii) the possible effects of anthropogenic actions on fluvial processes affecting flooding (land use and land cover change—LULCC). The flooded areas were identified from a multispectral satellite image taken by a sensor on Sentinel-2. A multi-temporal analysis of aerial photographs (1929, 1956, 1981, 2009, and 2017) showing the fluvial and anthropic environment at a detailed scale (1:25,000) was used to define the fluvial geomorphology and the main anthropic alterations on the Rebollos ephemeral stream. Official inputs from geographical information repositories about land use were also gathered (LULC). The result was compared to the official flood hazard maps (SNCZI) and this revealed floodable areas that had not been previously mapped because official maps rely only on the hydraulic method. Finally, all the recent changes that will have increased the disastrous consequences of flooding have been detected, analyzed, and mapped for the study area.

scholarly journals Vegetation Status in Uttara Kannada District

2007 ◽  
Vol 6 (1) ◽  
pp. 1-26 ◽  
Author(s):  
T. V. Ramachandra
Keyword(s):  
Land Use ◽  
Natural Resources ◽  
Forest Cover ◽  
Agricultural Land ◽  
Forest Type ◽  
Temporal Analysis ◽  
Forest Resources ◽  
Natural Forests ◽  
Remotely Sensed Data ◽  
Forested Area

Uttara Kannada is the only district in Karnataka, which has a forested area of about 80% and falls in the region of the Western Ghats. It is considered to be very resourceful in terms of abundant natural resources and constitutes an important district in Karnataka.The forest resources of the district are under pressure as a large portion of the forested area has been converted to non-forestry activities since independence owing to the increased demands from human and animal population resulting in the degradation of the forest ecosystem.This has led to poor productivity and regenerative capacity which is evident in the form of barren hill tops, etc. in Coastal taluks of Uttara Kannada , entailing regular monitoring of the forest resources very essential.The classification of forest is a prerequisite for managing forest resources.Geographical Information System (GIS),allows the spatial and temporal analysis of the features of interest, and helps in solving the problem of deforestation and associated environmental and ecological problems.Spatial and temporal tools such as GIS and remotely sensed data helps the planners and decision makers in evolving the sustainable strategies for management and conservation of natural resources. Uttara Kannada district was classified on the basis of the land-use using supervised hard classifiers.The land use categories identified were urban area, water bodies, agricultural land, forest cover, and waste land.Further classification was carried out on the basis of forest type. The types of forest categorized were semi-evergreen, evergreen, moist deciduous, dry deciduous, plantations and scrub, thorny and non-forested area. The identified classes were correlated with the ground data collected during field visits. The observed results were compared with the historic data and the changes in the forest cover were analyzed. From the assessment made it was clear that there has been a considerable degree of forest loss in certain areas of the district. It was also observed that plantations and social forests have increased drastically over the last fifteen years, and natural forests have declined.

Morphotectonic Analysis of Tanjung Bungo Area Based on Geological Structure Control, Central Sumatera Basin

2020 ◽  
Author(s):  
D., A., L., A. Putri
Keyword(s):  
Natural Resources ◽  
River Flow ◽  
Measurement Data ◽  
River System ◽  
Flow Patterns ◽  
Source Rocks ◽  
Aerial Photographs ◽  
Morphological Data ◽  
Tectonic Activity ◽  
Geological Structures

Tectonic activity in an area could result in various impacts such as changes in elevation, level of slope percentages, river flow patterns and systems, and the formation of geological structures both locally and regionally, which will form a new landscape. The tectonic activity also affects the stratigraphic sequences of the area. Therefore, it is necessary to study morphotectonic or landscape forms that are influenced by active tectonic activities, both those occur recently and in the past. These geological results help provide information of the potential of natural resources in and around Tanjung Bungo area. Morphological data are based on three main aspects including morphogenesis, morphometry, and morphography. The data are collected in two ways, the first is field survey by directly observing and taking field data such as measuring geological structures, rock positions, and outcrop profiles. The second way is to interpret them through Digital Elevation Model (DEM) and aerial photographs by analyzing river flow patterns and lineament analysis. The field measurement data are processed using WinTensor, Dips, and SedLog Software. The supporting data such as Topographic Maps, Morphological Elevation Maps, Slope Maps, Flow Pattern Maps, and Lineament Maps are based on DEM data and are processed using ArcGis Software 10.6.1 and PCI Geomatica. Morphotectonically, the Tanjung Bungo area is at a moderate to high-class level of tectonic activity taken place actively resulted in several joints, faults, and folds. The formation of geological structures has affected the morphological conditions of the area as seen from the development of steep slopes, structural flow patterns such as radial, rectangular, and dendritic, as well as illustrated by rough surface relief in Tanjung Bungo area. This area has the potential for oil and gas resources as indicated by the Telisa Formation, consisting of calcareous silts rich in planktonic and benthonic fossils, which may be source rocks and its contact with the Menggala Formation which is braided river system deposits that could be good reservoirs. Further research needs to be done since current research is only an interpretation of surface data. Current natural resources being exploited in Tanjung Bungo region are coals. The coals have thicknesses of 5-7 cm and are classified as bituminous coals.

scholarly journals The Role of Technology in Greenhouse Agriculture: Towards a Sustainable Intensification in Campo de Dalías (Almería, Spain)

Agronomy ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 101
Author(s):  
Antonio J. Mendoza-Fernández ◽  
Araceli Peña-Fernández ◽  
Luis Molina ◽  
Pedro A. Aguilera
Keyword(s):  
Land Use ◽  
Economic Development ◽  
Water Resources ◽  
Natural Resources ◽  
Temporal Evolution ◽  
Technological Development ◽  
Sustainable Intensification ◽  
Short Period ◽  
Cultivation Techniques

Campo de Dalías, located in southeastern Spain, is the greatest European exponent of greenhouse agriculture. The development of this type of agriculture has led to an exponential economic development of one of the poorest areas of Spain, in a short period of time. Simultaneously, it has brought about a serious alteration of natural resources. This article will study the temporal evolution of changes in land use, and the exploitation of groundwater. Likewise, this study will delve into the technological development in greenhouses (irrigation techniques, new water resources, greenhouse structures or improvement in cultivation techniques) seeking a sustainable intensification of agriculture under plastic. This sustainable intensification also implies the conservation of existing natural areas.

scholarly journals Analysis of spatiotemporal changes of agricultural land after the Second World War in Czechia

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Vít Zelinka ◽  
Johana Zacharová ◽  
Jan Skaloš
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Population Change ◽  
Temporal Analysis ◽  
Second World War ◽  
Agricultural Landscapes ◽  
German Population ◽  
World War ◽  
Landscape Type ◽  
Second World

AbstractThe term Sudetenland refers to large regions of the former Czechoslovakia that had been dominated by Germans. German population was expelled directly after the Second World War, between 1945 and 1947. Almost three million people left large areas in less than two years. This population change led to a break in the relationship between the people and the landscape. The aim of the study is to compare the trajectories of these changes in agricultural landscapes in lower and higher altitudes, both in depopulated areas and areas with preserved populations. This study included ten sites in the region of Northern Bohemia in Czechia (18,000 ha in total). Five of these sites represent depopulated areas, and the other five areas where populations remained preserved. Changes in the landscape were assessed through a bi-temporal analysis of land use change by using aerial photograph data from time hoirzons of 2018 and 1953. Land use changes from the 1950s to the present are corroborated in the studied depopulated and preserved areas mainly by the trajectory of agricultural land to forest. The results prove that both population displacement and landscape type are important factors that affect landscape changes, especially in agricultural landscapes.

AFTERWORD

2000 ◽  
Vol 41 (1) ◽  
pp. 127-130 ◽  
Author(s):  
SARA BERRY
Keyword(s):  
Land Use ◽  
Natural Resources ◽  
Conservation And Development ◽  
Sources Of Knowledge ◽  
British Rule ◽  
Colonial Policies ◽  
Land Use Practices

The four papers in this collection bring a varied set of perspectives as well as examples to bear on several common themes. The authors describe continuities and changes in colonial policies toward Africans' access to and use of land and natural resources and discuss some of the sources of knowledge that informed colonial officials' thinking about African land use practices. Implicitly if not directly, each poses the question of whether colonial officials learned anything from their interactions with African farmers and/or herders? By bringing together evidence from different though overlapping periods of time (all of them cover the late 1940s and 1950s) and a variety of colonial contexts (colonies under French and British rule, with and without European settlers), as a group these papers invite reflection on the circumstances that led colonial officials to acknowledge, or deny, that Africans might know something about their environments and that such knowledge ought to inform the design of conservation and development schemes.

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