scholarly journals Kajian kerusakan lingkungan pada tambang intan berbasis pertambangan rakyat di Kecamatan Cempaka, Kalimantan Selatan

2021 ◽  
Vol 35 (2) ◽  
Author(s):  
Lely Adriani Nasution ◽  
Suratman Suratman ◽  
Sudrajat Sudrajat
Keyword(s):  
Management Strategies ◽  
Observation Point ◽  
Small Scale ◽  
Environmental Damage ◽  
Artisanal Mining ◽  
Damage Level ◽  
Mining Sites ◽  
Diamond Mining ◽  
Depth Interview ◽  
Long Time

Abstrak. Penambangan intan di Kecamatan Cempaka telah ada sejak dulu dan dikelola langsung oleh masyarakat serta tergolong sebagai tambang rakyat yang berskala kecil. Keberadaan tambang intan memunculkan permasalahan pada lingkungan berupa kerusakan. Kerusakan yang ditimbulkan mencakup seluruh aspek seperti abiotik, biotik dan kultural. Untuk itu perlu dilakukan suatu kajian terkait bagaimana kerusakan yang ditimbulkan dari kegiatan tersebut. Tujuan pada penelitian ini berupa, (1) mengidentifikasi jenis kerusakan lingkungan akibat kegiatan pertambangan intan, (2) menganalisis tingkat kerusakan lingkungannya, (3) merumuskan strategi pengelolaan yang sesuai untuk kerusakan lingkungan akibat pertambangan intan tersebut. Metode yang digunakan dalam penelitian merupakan metode gabungan antara kuantitatif berupa skoring dan perhitungan kelas interval serta kualitatif berupa wawancara mendalam, yang mengacu pada kriteria dari Buku I Kerusakan Lahan Akses Terbuka Akibat Tambang Rakyat oleh Kementrian Lingkungan Hidup dan Kehutanan (KLHK) tahun 2015. Hasil penelitian menunjukkan bahwa identifikasi jenis kerusakan lingkungan memiliki kesesuaian dengan parameter yang ada pada ketentuan KLHK tahun 2015. Analisis tingkat kerusakan menunjukkan bahwa titik pengamatan 4 di Kelurahan Sungai Tiung menjadi titik dengan tingkat kerusakan yang berat. Perumusan strategi pengelolaan menunjukkan bahwa pengalihfungsian lokasi pertambangan menjadi tujuan wisata adalah upaya pengelolaan yang paling tepat.   Abstract .Diamond mining in Cempaka Subdistrict existed for a long time ago and was handled by community groups and included as small-scale artisanal mining. The existence of diamond mining causes a problem to the environment like environmental damage. The damage caused covers all aspects such as abiotic, biotic, and cultural. Thus, it needs to carry out a study related to how these activities cause the damage. The purposes of the research are, (1) Identify the types of environmental damage, (2) analyze the level of environmental damage, (3) formulate the appropriate management strategies for environmental damage caused by diamond mining. The research method uses mix method between quantitative like scoring and calculation an interval class, and qualitative, with an in-depth interview, which references Book I Open Access to Land Damage due to Artisanal Mining by the Ministry of Environmental and Forestry 2015. The results showed that identifying the environmental damage type was in accordance with the parameters in 2015 of KLHK references. Analyze an environmental damage level shows the heavy damage level found in observation point 4 in Sungai Tiung. Formulation of a management strategy shows that mining sites' conversion to tourism destinations is the most appropriate.  

scholarly journals Disproportionate Water Quality Impacts from the Century-Old Nautanen Copper Mines, Northern Sweden

2020 ◽  
Vol 12 (4) ◽  
pp. 1394
Author(s):  
Sandra Fischer ◽  
Gunhild Rosqvist ◽  
Sergey R. Chalov ◽  
Jerker Jarsjö
Keyword(s):  
Water Quality ◽  
Mine Waste ◽  
Measurement Data ◽  
The Arctic ◽  
Small Scale ◽  
Northern Sweden ◽  
Mining Site ◽  
Mining Sites ◽  
Local Background ◽  
Long Time

Pollution from small historical mining sites is usually overlooked, in contrast to larger ones. Especially in the Arctic, knowledge gaps remain regarding the long-term mine waste impacts, such as metal leakage, on water quality. We study the small copper (Cu) mines of Nautanen, northern Sweden, which had been in operation for only six years when abandoned approximately 110 years ago in 1908. Measurements from field campaigns in 2017 are compared to synthesized historical measurement data from 1993 to 2014, and our results show that concentrations of Cu, Zn, and Cd on-site as well as downstream from the mining site are order(s) of magnitude higher than the local background values. This is despite the small scale of the Nautanen mining site, the short duration of operation, and the long time since closure. Considering the small amount of waste produced at Nautanen, the metal loads from Nautanen are still surprisingly high compared to the metal loads from larger mines. We argue that disproportionately large amounts of metals may be added to surface water systems from the numerous small abandoned mining sites. Such pollution loads need to be accounted for in sustainable assessments of total pollutant pressures in the relatively vulnerable Arctic environment.

scholarly journals Assessment of the Scale of Artisanal Mining in Bangwe Township, Blantyre

2020 ◽  
Author(s):  
Jabulani Matsimbe
Keyword(s):  
Construction Projects ◽  
Capital Requirements ◽  
Small Scale ◽  
Mining Activities ◽  
Artisanal Mining ◽  
Non Profit ◽  
Mining Sites ◽  
Development Goals ◽  
Surrounding Areas ◽  
Quarry Mining

Even though mining contributes less than 1 % to Malawi’s gross domestic product (GDP), it is central to the government’s sustainable development goals strategy and spearheaded to be the backbone of Malawi’s economy. Little is known about the scale of artisanal quarry mining production, mining methods used, capital requirements, its diversity and distribution across different areas in Malawi. Present study seeks to fill that gap by assessing the scale of artisanal and small scale quarry mining activities in Bangwe Township. With a population of 170, 350, it represents 21% of the total population of Blantyre city which has 809, 397 people. The township was chosen as it is the main hub and supplier of artisanal aggregates to surrounding areas in Blantyre. In addition, the township has many unemployed youth with a high potential to get involved in artisanal mining thereby improving their lives. Most youth have a negative perception about artisanal mining as it is viewed as a non-profit making and labour intensive business. There are no gemstone mining sites in Bangwe Township. It was also found that there are 7 artisanal quarry mining sites in the township comprising Ntopwa, Mpingwe, Mvula, Number One, Namatapa, Namiyango and Chikunda. On average, each quarry mining site produces 5 wheelbarrows per day and sells at US$2.66 per wheelbarrow. As most builders require quarry for construction projects, the quarry miners sell at least 0.5 tonnes per day. The output of this study has created a database of artisanal quarry mining activities and the level of active youth involvement in artisanal mining in Bangwe Township. Policy makers will use the new knowledge to develop strategies that will foster the growth of artisanal quarry miners and empower the youth to join the artisanal mining business.

scholarly journals Assessment of the Scale of Artisanal Mining in Bangwe Township, Blantyre

2020 ◽  
Author(s):  
Jabulani Matsimbe
Keyword(s):  
Construction Projects ◽  
Capital Requirements ◽  
Small Scale ◽  
Mining Activities ◽  
Artisanal Mining ◽  
Non Profit ◽  
Mining Sites ◽  
Development Goals ◽  
Surrounding Areas ◽  
Quarry Mining

Even though mining contributes less than 1 % to Malawi’s gross domestic product (GDP), it is central to the government’s sustainable development goals strategy and spearheaded to be the backbone of Malawi’s economy. Little is known about the scale of artisanal quarry mining production, mining methods used, capital requirements, its diversity and distribution across different areas in Malawi. Present study seeks to fill that gap by assessing the scale of artisanal and small scale quarry mining activities in Bangwe Township. With a population of 170, 350, it represents 21% of the total population of Blantyre city which has 809, 397 people. The township was chosen as it is the main hub and supplier of artisanal aggregates to surrounding areas in Blantyre. In addition, the township has many unemployed youth with a high potential to get involved in artisanal mining thereby improving their lives. Most youth have a negative perception about artisanal mining as it is viewed as a non-profit making and labour intensive business. There are no gemstone mining sites in Bangwe Township. It was also found that there are 7 artisanal quarry mining sites in the township comprising Ntopwa, Mpingwe, Mvula, Number One, Namatapa, Namiyango and Chikunda. On average, each quarry mining site produces 5 wheelbarrows per day and sells at US$2.66 per wheelbarrow. As most builders require quarry for construction projects, the quarry miners sell at least 0.5 tonnes per day. The output of this study has created a database of artisanal quarry mining activities and the level of active youth involvement in artisanal mining in Bangwe Township. Policy makers will use the new knowledge to develop strategies that will foster the growth of artisanal quarry miners and empower the youth to join the artisanal mining business.

Sustainability and adaptability of regional development in the conditions of digitalization

2020 ◽  
Vol 19 (9) ◽  
pp. 1550-1613
Author(s):  
O.E. Akimova ◽  
S.K. Volkov ◽  
E.A. Gladkaya ◽  
I.M. Kuzlaeva
Keyword(s):  
Sustainable Development ◽  
Regional Development ◽  
Economic Behavior ◽  
Regional Inequality ◽  
Environmental Damage ◽  
Economic Potential ◽  
Human Welfare ◽  
Long Time ◽  
The Stability ◽  
Smart Technologies

Subject. The article discusses the sustainability of regional economy development, its definition, and the substance of sustainable development. Objectives. We aim at performing a comprehensive analysis of indicators of sustainability and adaptability of regional development in the context of digitalization, formulating a strategy for economic behavior that takes into account the multidimensional nature of regional inequality and is focused on boosting the economic potential of regions. Methods. The study draws on dialectic and systems approaches, general scientific methods of retrospective, situational, economic and statistical, and comparative analysis. Results. The sustainability of the region focuses on improving the human welfare over long time horizon. This happens in three areas, i.e. maximizing the efficiency of resource use; ensuring justice and democracy; minimizing resource consumption and environmental damage. The stability of the region can be assessed by using one parameter, or by combining the parameters in accordance with the type of region and expected results. Conclusions. The adaptation of a region to changing conditions depends on its type (‘adapted’, ‘adaptive’, and ‘non-adapted’). Regional inequality has two main components: difference in economic potential and social satisfaction of residents. Another component, affecting the stability and adaptability of regions, is the level of their digitalization. However, some regions have only formally embarked on the path of digitalization. Moreover, a focus on smart technologies, solutions and digitalization often leads to ignoring the goals of sustainable development. Smart technologies should be aimed at ensuring sustainability within the framework of the smart sustainable city concept.

scholarly journals The Benefits of Combining Global and Local Data—A Showcase for Valuation and Mapping of Mangrove Climate Regulation and Food Provisioning Services within a Protected Area in Pará, North Brazil

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 432
Author(s):  
Robin Gutting ◽  
Ralf-Uwe Syrbe ◽  
Karsten Grunewald ◽  
Ulf Mehlig ◽  
Véronique Helfer ◽  
...  
Keyword(s):  
Global Climate ◽  
Structural Parameters ◽  
Management Strategies ◽  
Small Scale ◽  
Mangrove Forests ◽  
Food Provisioning ◽  
Local Data ◽  
Climate Regulation ◽  
North Brazil ◽  
Species Specific

Mangrove forests provide a large variety of ecosystem services (ES) to coastal societies. Using a case study focusing on the Ajuruteua peninsula in Northern Brazil and two ES, food provisioning (ES1) and global climate regulation (ES2), this paper proposes a new framework for quantifying and valuing mangrove ES and allow for their small-scale mapping. We modelled and spatialised the two ES from different perspectives, the demand (ES1) and the supply (ES2) side respectively. This was performed by combining worldwide databases related to the global human population (ES1) or mangrove distribution and canopy height (ES2) with locally derived parameters, such as crab catches (ES1) or species-specific allometric equations based on local estimates of tree structural parameters (ES2). Based on this approach, we could estimate that the area delivers the basic nutrition of about 1400 households, which equals 2.7 million USD, and that the mangrove biomass in the area contains 2.1 million Mg C, amounting to 50.9 million USD, if it were paid as certificates. In addition to those figures, we provide high-resolution maps showing which areas are more valuable for the two respective ES, information that could help inform management strategies in the future.

scholarly journals Unmanned Aerial Vehicles for Wildland Fires: Sensing, Perception, Cooperation and Assistance

Drones ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 15
Author(s):  
Moulay A. Akhloufi ◽  
Andy Couturier ◽  
Nicolás A. Castro
Keyword(s):  
Unmanned Aerial Vehicles ◽  
Wildland Fire ◽  
Fire Intensity ◽  
Economic Losses ◽  
Small Scale ◽  
Environmental Damage ◽  
Unmanned Aerial Systems ◽  
Wildland Fires ◽  
Natural Risk ◽  
Aerial Vehicles

Wildfires represent a significant natural risk causing economic losses, human death and environmental damage. In recent years, the world has seen an increase in fire intensity and frequency. Research has been conducted towards the development of dedicated solutions for wildland fire assistance and fighting. Systems were proposed for the remote detection and tracking of fires. These systems have shown improvements in the area of efficient data collection and fire characterization within small-scale environments. However, wildland fires cover large areas making some of the proposed ground-based systems unsuitable for optimal coverage. To tackle this limitation, unmanned aerial vehicles (UAV) and unmanned aerial systems (UAS) were proposed. UAVs have proven to be useful due to their maneuverability, allowing for the implementation of remote sensing, allocation strategies and task planning. They can provide a low-cost alternative for the prevention, detection and real-time support of firefighting. In this paper, previous works related to the use of UAV in wildland fires are reviewed. Onboard sensor instruments, fire perception algorithms and coordination strategies are considered. In addition, some of the recent frameworks proposing the use of both aerial vehicles and unmanned ground vehicles (UGV) for a more efficient wildland firefighting strategy at a larger scale are presented.

scholarly journals Coping with abrupt environmental change: the impact of the coastal El Niño 2017 on artisanal fisheries and mariculture in North Peru

2018 ◽  
Vol 76 (4) ◽  
pp. 1122-1130 ◽  
Author(s):  
Lotta Clara Kluger ◽  
Sophia Kochalski ◽  
Arturo Aguirre-Velarde ◽  
Ivonne Vivar ◽  
Matthias Wolff
Keyword(s):  
El Niño ◽  
El Nino ◽  
Management Strategies ◽  
Small Scale ◽  
Artisanal Fisheries ◽  
Economic Activities ◽  
Economic Sectors ◽  
Wide Range ◽  
The Impact ◽  
Coastal El Niño

Abstract In February and March 2017, a coastal El Niño caused extraordinary heavy rains and a rise in water temperatures along the coast of northern Peru. In this work, we document the impacts of this phenomenon on the artisanal fisheries and the scallop aquaculture sector, both of which represent important socio-economic activities for the province of Sechura. Despite the perceived absence of effective disaster management and rehabilitation policies, resource users opted for a wide range of different adaptation strategies and are currently striving towards recovery. One year after the event, the artisanal fisheries fleet has returned to operating almost on a normal scale, while the aquaculture sector is still drastically impacted, with many people continuing to work in different economic sectors and even in other regions of the country. Recovery of the social-ecological system of Sechura likely depends on the occurrence of scallop seed and the financial capacity of small-scale producers to reinitiate scallop cultures. Long-term consequences of this coastal El Niño are yet to be studied, though the need to develop trans-local and trans-sectoral management strategies for coping with disturbance events of this scale is emphasized.

Non-Gaussian probability distributions of solar wind fluctuations

1994 ◽  
Vol 12 (12) ◽  
pp. 1127-1138 ◽  
Author(s):  
E. Marsch ◽  
C. Y. Tu
Keyword(s):  
Solar Wind ◽  
Probability Distributions ◽  
Time Lag ◽  
Small Scale ◽  
Time Lags ◽  
Mhd Turbulence ◽  
Theoretical Concepts ◽  
Fluid Turbulence ◽  
Long Time ◽  
Non Gaussian

Abstract. The probability distributions of field differences ∆x(τ)=x(t+τ)-x(t), where the variable x(t) may denote any solar wind scalar field or vector field component at time t, have been calculated from time series of Helios data obtained in 1976 at heliocentric distances near 0.3 AU. It is found that for comparatively long time lag τ, ranging from a few hours to 1 day, the differences are normally distributed according to a Gaussian. For shorter time lags, of less than ten minutes, significant changes in shape are observed. The distributions are often spikier and narrower than the equivalent Gaussian distribution with the same standard deviation, and they are enhanced for large, reduced for intermediate and enhanced for very small values of ∆x. This result is in accordance with fluid observations and numerical simulations. Hence statistical properties are dominated at small scale τ by large fluctuation amplitudes that are sparsely distributed, which is direct evidence for spatial intermittency of the fluctuations. This is in agreement with results from earlier analyses of the structure functions of ∆x. The non-Gaussian features are differently developed for the various types of fluctuations. The relevance of these observations to the interpretation and understanding of the nature of solar wind magnetohydrodynamic (MHD) turbulence is pointed out, and contact is made with existing theoretical concepts of intermittency in fluid turbulence.

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