scholarly journals Environmental impacts in Castro zone of the Paraná talc district, Brazil

2002 ◽  
Vol 50 ◽  
Author(s):  
ANTONIO CARLOS GONDIM ◽  
LUIZ EDUARDO MANTOVANI ◽  
HIDEO ARAKI
Keyword(s):  
Environmental Impacts ◽  
Riparian Forest ◽  
Bare Soil ◽  
Native Forest ◽  
Mining Activities ◽  
Economic Activities ◽  
Landsat Images ◽  
Multi Temporal ◽  
Forest Use ◽  
The Impact

During the last two centuries, in Castro zone of the Paraná talc district in southern Brazil, native subtropical rain forest was exploited for wood and firewood use. During the last decade the exploitation process of the native forest has continued. In this paper it is presented a multi-temporal research about the impact of the native forest use. The chiefly aim is to discuss and illustrate the consequences of the use of forest and the absence of the reforest action in degraded areas in Castro zone of the Paraná talc district and the relation between the environmental impacts and the economic activities in the region. The landscape impact of the mining activities is evident, although very limited in area if it is considered the territory in its totality. The main impact in the region is the deforestation. Through Landsat images it was possible to determine the changes that occurred in the land use in the region from 1990 to 2000. It is described the behavior of 4 classification entities: riparian forest, forest, cropland and bare soil. In these 10 years the main environmental impact is associated to forest reducing from 52% to 38 % of the total area. The deforestation was associated to wood industries in the past, nowadays it is linked to use of the soil to crop farms, firewood mainly to mining activities, especially lime-kiln and just few amount to dry talc ore product. In the last 3 years the firewood to dry talc was replaced by lumber-mill dust that represents wastes in wood industries.

scholarly journals Analisis Dampak Penambangan Pasir Ilegal Sungai Brantas terhadap Lingkungan Hidup di Desa Brumbung Kabupaten Kediri

2019 ◽  
Vol 2 (2) ◽  
pp. 8
Author(s):  
Agus Abdul Halim ◽  
Nugroho Tri Waskitho ◽  
Galit Gatut Prakosa
Keyword(s):  
Natural Resources ◽  
Environmental Impacts ◽  
Large Scale ◽  
Human Life ◽  
Research Process ◽  
Environmental Damage ◽  
Mining Activities ◽  
Sand Mining ◽  
Economic Activities ◽  
The Impact

Indonesia is a country with abundant natural resources, including those with enough potential, namely the mining sand industry. Mining on a large scale is good for economic growth, but vice versa on the environmental impacts caused. Environmental damage due to exploitation also occurred in Brumbung village, Kediri district. Environmental damage caused by existing sand mining creates problems that must be claimed by all parties. This paper examines how the impact caused by sand mining activities on the surrounding environment. This type of research is descriptive-qualitative, where the research process and understanding are based on the methodology that investigates a phenomenon. To study this problem, observations and questions and answers were made to the miners, the surrounding community and also the relevant offices. The observed location is around the Brantas River where there are sand mining activities in Brumbung Village, Kepung Subdistrict, Kediri District. research in the area is motivated by the phenomenon of the large number of illegal sand mining in the Brantas river, especially in the self-inflated village, which has many pros and cons in the surrounding community. The environment itself is all things, conditions, conditions and influences that are in the space we occupy and affect the things that live, including human life. Population growth has increased the need for clothing, food, shelter, clean water and energy. This results in higher exploitation of natural resources and tends to neglect environmental aspects. Therefore there is a need for research on the study of environmental impacts, both physical and socio-economic activities of sand mining in the berumbung village, in order to obtain an overview of the environmental impacts that occur or will occur. Later this research is to be taken into consideration in making policies related to the problem of sand mining. 

scholarly journals FEATURES OF SUSTAINABLE DEVELOPMENT OF THE FOREST SECTOR IN A FOREST-POOR REGION (ON THE EXAMPLE OF THE VORONEZH REGION)

2021 ◽  
Vol 9 (1) ◽  
pp. 7-16
Author(s):  
Irina Zinoveva ◽  
Olga Pecherskaya
Keyword(s):  
Sustainable Development ◽  
Regional Economy ◽  
Forest Policy ◽  
Forest Resources ◽  
Forest Sector ◽  
Economic Activities ◽  
Voronezh Region ◽  
Forest Use ◽  
Regional Forest ◽  
The Impact

The paper considers the directions of development of the region of the forestry sector of low-forest use on the example of the Voronezh region, highlights the factors and conditions for sustainable development and regional forest policy, principles, principles of compatibility of the compatibility of the use of forest resources in one area. It is emphasized that for sparsely wooded regions it is advisable to conduct economic activities within the framework of public-private partnerships associated with ensuring the protection and protection of forests, afforestation and reforestation, that is, activities related to the creation of a resource region. It is noted that the non-resource use of forests due to the disclosure of the recreational potential of the territory contributes not only to the development of the regional economy, but also satisfies the population's need for recreation, allowing to restore the lost working capacity. Forest plots from the lands of the forest fund of the Voronezh region in 2018-2020 were provided for permanent (unlimited) use, rent, free fixed-term use. The analysis showed an increase in the number of contracts for the implementation of recreational activities, construction, reconstruction, operation of linear objects, as well as hunting. With the aim of a balanced use of forest resources, taking into account the impact on the development of the regional economy, the criteria for choosing a priority direction of forest use were determined.

scholarly journals The Impact of Coal Exploitation on Tidal Flat Changes, an Investigation Using Remote Sensing Data in Vietnam

2021 ◽  
Vol 1 (2) ◽  
Author(s):  
Thi Lan PHAM ◽  
Si Son TONG ◽  
Thi Thu Ha LE ◽  
Thi Le LE ◽  
Huu Duc HOANG
Keyword(s):  
Remote Sensing ◽  
Coal Mining ◽  
Coal Mine ◽  
Tidal Flat ◽  
Remote Sensing Data ◽  
Tidal Flats ◽  
Mining Activities ◽  
Landsat Images ◽  
Sensing Data ◽  
The Impact

Tidal flat plays a crucial role in socio-economic development and ecological environment.Tidal flats in Ha Long-Cam Pha in Vietnam are impacted by human activities, especially coal miningactivities. Using remote sensing data is able to detect, extract, and monitor the changes of tidal flats andexploited coal mine area with multi-temporal, in various scales, and for a large coverage. This studyaims to investigate the impact of coal mining activities on the changes of tidal flats using remote sensingin Cam Pha, Ha Long, one of the biggest coal basins in Vietnam. Digital Elevation Models (DEMs) oftidal flats constructed by Landsat satellite images acquired in years 1989, 2001, and 2014 are comparedto determine the volume changes. Besides, coal mining activities including coal production, waste rockdump area, and the expansion of open coal mine during the period 1989-2014 are investigated usingcorrespondent Landsat images and the reports from the coal mine companies in the study area. Sedimentsamples in tidal flats are analyzed to determine the origin of the sediments. As the results, organic matterin the tidal flats is dominant with the concentration of 459 g/kg to 607 g/kg, which is evidence for theimpact of coal exploitation on the coastal environment. In addition, the relationship between coal mineactivities and tidal flat variation is well observed in this study.

IMPACTOS AMBIENTAIS DENTRO DA MICROBACIA DO RIO JACU: UM ESTUDO DE CASO DA ÁREA EM TORNO DO RIO PRINCIPAL – JACU, NO MUNICÍPIO DE GOIANINHA-RN

2019 ◽  
Vol 21 (2) ◽  
pp. 1070-1090
Author(s):  
Nadeline Hevelyn Lima Araújo ◽  
Ivaniza Sales Batista ◽  
Maria Luiza Terto ◽  
Raquel Silva Anjos
Keyword(s):  
Water Resources ◽  
Environmental Impacts ◽  
Riparian Forest ◽  
Field Research ◽  
Economic Activities ◽  
Erosion Processes ◽  
Livestock Breeding ◽  
Improper Use ◽  
Qualitative Nature ◽  
Del Rio

Nas últimas décadas a necessidade de proteção das águas contra diversas formas de poluição e de uso inadequado está presente nas discussões ambientais. A nossa pesquisa enviesa pela temática de bacia hidrográfica, com a delimitação do tema em impactos ambientais e tendo como área de estudo um recorte espacial dentro do município de Goianinha-RN, no entorno do Rio Jacu, objetivando compreender os impactos ambientais que ocorrem na área; os usos e importância desta bacia para o município; as atividades econômicas ou ações humanas que mais têm afetado a área do rio; os principais tipos de poluentes jogados no rio; entender desde quando esses poluentes vêm sendo jogados; compreender os processos erosivos e do desmatamento da mata ciliar e entender quais as consequências destes impactos no referido município. Partimos da hipótese de que existe contaminação dentro da microbacia do Rio Jacu, proveniente de resíduos agroindustriais, criação de gado, etc, por meio de três conceitos: recursos hídricos; bacia hidrográfica e impactos ambientais, através de três níveis de pesquisa: pesquisa bibliográfica, documental e de campo, sendo os dados de natureza quantitativa e qualitativa, onde primeiro são coletados os dados e após tratamento, classificados.Palavras chaves: Recursos Hídricos; Bacia hidrográfica; Impactos Ambientais. ABSTRACTIn recent decades the need for water protection against various forms of pollution and improper use is in environmental discussions.Our research skews by the thematic watershed, with the demarcation of the theme in environmental impacts and having as a study area a spatial cut within the municipality of Goianinha-RN, around the river Jacu, aiming to understand the environmental impacts that occur in the area; What are the uses and importance of this basin for the municipality; What economic activities or human actions that most have affected the area of the river; what are the main types of pollutants thrown in the river; Understand since when these pollutants have been thrown; Understand the erosion processes and deforestation of the riparian forest and understand the consequences of this impact on the municipality. Starting from the hypothesis that there is contamination within the microbasin of the Jacu River, from agro waste, livestock breeding, etc., by means of three concepts: water resources; watershed and environmental impacts, through three levels of research: bibliographic, documentary and field research, with data of a quantitative and qualitative nature. Where first are collected data and after treatment, classified.Keywords: Water resources; watershed; Environmental impacts. RESUMENEn las últimas décadas, la necesidad de proteger el agua contra diversas formas de contaminación y mal uso ha estado presente en las discusiones ambientales. Nuestra investigación sesga el tema de la cuenca, con la delimitación del tema sobre los impactos ambientales y teniendo como área de estudio un corte espacial dentro del municipio de Goianinha-RN, alrededor del río Jacu, con el objetivo de comprender los impactos ambientales que ocurren en el área; los usos e importancia de esta cuenca para el municipio; las actividades económicas o acciones humanas que más han afectado el área del río; los principales tipos de contaminantes arrojados al río; entender desde cuando se han liberado estos contaminantes; Comprender los procesos erosivos y la deforestación de los bosques ribereños y comprender las consecuencias de estos impactos en el municipio referido. Partimos de la hipótesis de que existe contaminación dentro de la cuenca del río Jacu por desechos agroindustriales, ganadería, etc., a través de tres conceptos: recursos hídricos; cuencas hidrográficas e impactos ambientales a través de tres niveles de investigación: investigación bibliográfica, documental y de campo, siendo los datos de naturaleza cuantitativa y cualitativa, donde se recopilan los primeros datos y luego se clasifican los tratamientos.Palabras clave: Recursos hídricos; Cuenca hidrográfica; Impactos ambientales.

Analysis of Urban Expansion on Agricultural Food Production in Calabar, Nigeria

2021 ◽  
Vol 2 (4) ◽  
pp. 54-62
Author(s):  
M. A. Oyinloye ◽  
U. M. Ogban ◽  
O. S. Aboyeji
Keyword(s):  
Urban Growth ◽  
Food Production ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Sampling Technique ◽  
Bare Soil ◽  
Landsat Images ◽  
Gis Software ◽  
The Impact ◽  
Agricultural Food

Urban growth appears to have direct effects on the available agricultural land in and around urban area which in turn affects food production and other agricultural activities in the city. Indiscriminate urban growth and increasing losses of agricultural lands have become an issue in developing countries. The aim of this study is to use Remote Sensing and GIS to monitor the impact of urban expansion on agricultural food production in Calabar, Nigeria. Landsat images of 1986, 2003 and 2018 of Calabar municipal and Calabar South were obtained. The study employed supervised digital image classification method using ILWIS 3.2 and ArcGIS 10.2a software. GIS software was used to classify the landuse into built-up area, natural vegetation, bare soil, agricultural land and water bodies. Also, a set of structured questionnaire were administered using the stratified random sampling technique to elicit information on the socio economic and driven factors responsible for conversion of agricultural landuse, effect of urban expansion on agricultural food production and measures adopted to preserve agricultural land uses. The results revealed increase in urban expansion on food production over the periods (1986–2018). Recommendations were provided that will reduce the rate of urban expansion on agricultural food production in the study area.

Tahiti Petrel Pseudobulweria rostrata population decline at a nickel-mining site: a critical need for adapted conservation strategies

2021 ◽  
pp. 1-13
Author(s):  
ANGÉLIQUE PAGENAUD ◽  
KAREN BOURGEOIS ◽  
SYLVAIN DROMZÉE ◽  
MARTIN THIBAULT ◽  
GUILLAUME CHAGNEAU ◽  
...  
Keyword(s):  
New Caledonia ◽  
Habitat Degradation ◽  
Population Decline ◽  
Bare Soil ◽  
Habitat Destruction ◽  
Conservation Strategy ◽  
Conservation Strategies ◽  
Mining Activities ◽  
Vocal Activity ◽  
The Impact

Summary New Caledonia hosts a large part of the world’s breeding population of the Tahiti Petrel Pseudobulweria rostrata. This rare, cryptic and little-studied seabird nests locally in the mountains up to 1,200 m in altitude, particularly in ultramafic (i.e. nickel-rich) areas where mining activity is a major threat. The considerable development of mining activities in New Caledonia over the past decade raises concerns about its potential impacts on breeding populations through both direct habitat destruction and side effects such as pollution or repeated disturbances. This context calls for a dedicated assessment of the persistence of local populations to guide the design of an adapted conservation strategy and potential restoration programmes. We investigated the impact of mining activities on a Tahiti Petrel population when surveyed pre-mining (2004–2007) and following a period of full mining (2017–2018). The vocal activity was assessed at a total of 114 night-call count stations spread over the Koniambo massif. Areas with ground-originated vocal activity were then searched during daytime for nesting evidence. Finally, georeferenced aerial photos were used to estimate habitat degradation as the percentage of bare soil cover (PBSC) within a 400-m radius around each call count station. Our study revealed a dramatic decline in the Tahiti Petrel vocal activity and a desertion of breeding habitats during the full-mining period compared to the pre-mining period. In light of these results, we recommend designing safe breeding areas and combining restoration methods including social attraction, predation control and artificial burrows at mining sites.

scholarly journals Prohibited, but still present: local and traditional knowledge about the practice and impact of forest grazing by domestic livestock in Hungary

2020 ◽  
Vol 16 (1) ◽  
Author(s):  
Anna Varga ◽  
László Demeter ◽  
Viktor Ulicsni ◽  
Kinga Öllerer ◽  
Marianna Biró ◽  
...  
Keyword(s):  
Traditional Knowledge ◽  
Management Practice ◽  
Scientific Information ◽  
Livestock Grazing ◽  
Native Forest ◽  
Ecological Knowledge ◽  
Forest Grazing ◽  
Local And Traditional Knowledge ◽  
Forest Use ◽  
The Impact

Abstract Background Forests have been grazed for millennia. Around the world, forest grazing by livestock became a controversial management practice, gradually restricted in many countries over the past 250 years. This was also the case in most Central and Eastern European countries, including Hungary, where forest grazing was a legally prohibited activity between 1961 and 2017. Until the 2010s, ecologists and nature conservationists considered it merely as a historical form of forest use. As a result, there is little contemporary scientific information available about the impact of forest grazing on vegetation and the traditional ecological knowledge associated with it. Our aim was to explore and summarize this type of knowledge held by herders in Hungary. Methods We interviewed 58 knowledgeable herders and participated in forest grazing activities in 43 study locations across the country. The results were analysed qualitatively. Results We revealed a living ecological knowledge tradition and practice of forest grazing in native and non-native forest stands. The impact of livestock grazing on native and non-native forests is not considerably different, in the view of the herders. For both forest types, the greatest impact of grazing was the suppression of the shrub layer, while grazing also increased the dominance and palatability (“tameness”) of the grasses. Livestock could cause significant damage to seedlings during forest grazing, but if done with care, grazing could also be an integral part of forestry management. Conclusions Sustainability of current forest grazing practices depends on the depth of local and traditional knowledge applied and herders’ stewardship. We stress the importance of collaborating with holders of local and traditional knowledge in order to gain a better understanding of the effects of livestock grazing on vegetation in temperate forests.

scholarly journals Impact of land-use change in the net radiation of the Cerrado of the southern Mato Grosso

2016 ◽  
Vol 11 (2) ◽  
pp. 350 ◽  
Author(s):  
Marcos Alves Fausto ◽  
Lucas Peres Angelini ◽  
Heloisa Oliveira Marques ◽  
Armando Silva Filho ◽  
Nadja Gomes Machado ◽  
...  
Keyword(s):  
Land Use ◽  
Riparian Forest ◽  
Bare Soil ◽  
Radiation Balance ◽  
Net Radiation ◽  
Mato Grosso ◽  
Cerrado Vegetation ◽  
Available Energy ◽  
Agricultural Areas ◽  
The Impact

Changes resulting from land use and occupation modify the surface radioactive balance. This paper evaluated the impact on the net radiation caused by the conversion of a Cerrado area in an agricultural zone in the southern Mato Grosso using Landsat 5 TM sensor imagery acquired between June and October 2011. The analyses were performed of the following land use classes: Cerrado, riparian vegetation, sugarcane, soybean, pasture, bare soil and water. The replacement of Cerrado by agricultural areas changed the biophysical indices of the surface due to the change in biomass and the optical properties of the surface as observed in this study. The NDVI values were higher in the typical Cerrado vegetation and Riparian Forest than in agricultural areas. The surface temperature and the surface albedo showed an inverse pattern of NDVI, with lower values in the typical Cerrado vegetation and Riparian Forest and higher values in agricultural areas and bare soil. The replacement of Cerrado by cultivated crops in the south of Mato Grosso decreased the available energy at the surface, as indicated by the radiation balance.

scholarly journals LAND USE DATA IN THE MIDDLE MAULE RIVER SUB-BASIN: CLASSIFICATION AND COMPARISON BETWEEN 1999 AND 2019

2020 ◽  
Vol XLII-3/W12-2020 ◽  
pp. 545-550
Author(s):  
M. N. Tapia ◽  
M. V. B. Morais
Keyword(s):  
Land Use ◽  
Central Zone ◽  
Future Research ◽  
Economic Activities ◽  
Landsat Images ◽  
Bodies Of Water ◽  
The Impact ◽  
Do So

Abstract. The use of satellite images is a modern strategy for the evaluation and prediction of various weather scenarios. In addition, this is a key tool for the development of environmental sciences. Since the end of the last decade, Chile has been suffering from a megadrought associated with climate change. In this context, this study proposes to evaluate the role of land use change in the Middle Maule River sub-basin, located in the Maule Region, Chile. This is an important sector characterized by a significant agricultural and hydroelectric contribution. To do so, this study performs a supervised classification of land cover through the usage of QGIS software and Landsat images for the years 1999 and 2019. The results show the growth of areas without vegetation due to a great drought facing the Central Zone of the country. Additionally, there is a decrease in available bodies of water. This article leaves open future research on the impact of the main economic activities of the region.

scholarly journals The Study Of Land Cover Change Using Change Vector Approach Integrated With Unsupervised Classification Method: A Case In Duy Tien (Vietnam)

2020 ◽  
Vol 13 (2) ◽  
pp. 175-184
Author(s):  
Si Son Tong ◽  
Thi Lan Pham ◽  
Quoc Long Nguyen ◽  
Thi Thu Ha Le ◽  
Le Hung Trinh ◽  
...  
Keyword(s):  
Land Cover ◽  
Vegetation Index ◽  
Normalized Difference Vegetation Index ◽  
Unsupervised Classification ◽  
Bare Soil ◽  
Land Cover Changes ◽  
Landsat Images ◽  
Change Dynamics ◽  
Multi Temporal ◽  
Change Vector

Investigating information on land cover changes is an indispensable task in studies related to the variation of the environment. Land cover changes can be monitored using multi-temporal satellite images at different scales. The commonly used method is the post-classification change detection which can figure out the replacement of a land cover by the others. However, the magnitude and dimension of the changes are not been always exploited. This study employs the mixture of categorical and radiometric change methods to investigate the relations between land cover classes and the change magnitude, the change direction of land covers. Applying the Change Vector Analysis (CVA) method and unsupervised classification for two Landsat images acquired at the same day of years in 2000 and in 2017 in Duy Tien district, the experimental results show that a low magnitude of change occurs in the largest area of direction I and direction IV regarding the increase of Normalized Difference Vegetation Index (NDVI), but the opposite trend of (Bare soil Index) BI in the rice field. Alternately, the high magnitude of change is seen in the build-up class which occupies the smallest area with 1700 ha. The characterized changes produced by the CVA method provide a picture of change dynamics of land cover over the period of 2000-2017 in the study area.

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