Long-time risk of groundwater/drinking water pollution with sulphuric compounds beneath burned peatlands in Indonesia

2007 ◽  
Vol 56 (1) ◽  
pp. 253-258 ◽  
Author(s):  
V.C. Hammen
Keyword(s):  
Drinking Water ◽  
Forest Fires ◽  
Peat Layer ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Long Time ◽  
Risk Areas ◽  
High Concentrations ◽  
Peat Fires ◽  
Vegetation And Peat Fires

Smoke-haze episodes caused by vegetation and peat fires affect parts of Indonesia every year with significant impacts on human health and climate. The forest fires 1997/1998 were by far the largest in Indonesian history, burning between 5 and 8 million hectares before they were stopped by the monsoon rains in December 1997. Fires sprang up again in 1998 on Kalimantan when monsoon rain paused. Peat forests and peatlands are in particular severely affected. In the 1997/1998 haze event, 2.1–2.5 million hectare of peat swamp forest burnt in Indonesia. The remaining ash contains high concentrations of sulphur and sulphuric compounds which eventually leach into the groundwater, thus polluting groundwater and drinking water. The thicker the peat layer is and the higher the number of fires in the respective area the more sulphuric compounds will leach into the groundwater. Risk areas for the sulphur loads of the ash are identified.

Controlling CO2 and CH4 Emission in a Degraded Peat Swamp Forest Related to Water Table and Peat Characteristics

2013 ◽  
Vol 391 ◽  
pp. 202-206
Author(s):  
Leila Kalsum ◽  
null Ngudiantoro ◽  
M. Faizal ◽  
A. Halim Pks
Keyword(s):  
Water Table ◽  
Forest Fires ◽  
Ash Content ◽  
Burned Area ◽  
Gas Temperature ◽  
Swamp Forest ◽  
Closed Chamber ◽  
Peat Swamp Forest ◽  
Peat Swamp

This study focuses on factors controlling CO2and CH4emission in a peat swamp forest related to water table and peat characteristics such as peat depth, C-organic, pH, ash content and N-total. This study was conducted in the dry season at a Merang peat swamp forest that has degraded due to logging activities, forest fires and canal opening. Emission of CO2and CH4was measured by using a closed chamber made by PVC material (60 cm x 60 cm x 40 cm). This close chamber was completed with a fan inside the chamber to stir the gas, a thermometer inside the chamber to measure the gas temperature and a syringe to sample gas. This study has shown that the highest CO2emission is at an average of 438.93 mg/m2/hr occurring in land cover type (1) ferns and grasses (open burned area) and the lowest is at average of 44.45 mg/m2/hr in thegelamandbelidang-dominated land. The emission of CH4is very low between 0.0018 to 0.0069 mg/m2/hr. the main controlling factor on CO2and CH4emission is concluded to be the water table. The emission of CO2will be greater if water table, pH and C-organic increase.

Identification of Bird species in Wetlands around Siran Lake, Muara Kaman, Central Mahakam, East Kalimantan

2021 ◽  
Vol 1 (1) ◽  
pp. 28-37
Author(s):  
Chandradewana Boer ◽  
Arie Prasetya ◽  
Rustam Rustam ◽  
Rita Diana
Keyword(s):  
Forest Fires ◽  
Bird Species ◽  
The United States ◽  
Wide Distribution ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
East Kalimantan ◽  
Peat Swamp ◽  
Heath Forest ◽  
Surrounding Areas

The avifauna of tropical peat swamp forests in East Kalimantan has not been well documented because of the smallest peat area compared to central Kalimantan. The surveys were conducted using various methods in the Muara Siran peat swamp forests and surrounding areas of Lake Siran (heath forest and riparian) in East Kalimantan, Indonesia. These findings were recorded on a list of 80 bird species as well as in numerous noteworthy records.  Wetlands are an essential habitat for many threatened and near-threatened bird species. We also discovered Gallinula tenebrosa in Siran Lake, a species that has not been seen in over a century. However, it has a wide distribution globally, including in Australia and the United States.  In the peat swamp forest, we recorded Cymbirrhinchus macrurus and Ichtyophaga humilis, rare and widely distributed. We also found Dicrurus hottentotus and Dicrurus remifer, some species of Ferruginous Babbler, Trichastoma bicolor, and the White-necked Babbler, Stachyris leucotis.  The Hook-billed bulbul Setornis criniger and the Sooty capped Babbler Malacopteron affinae are found in riparian forests. There are six species of woodpecker. Dryocopus javensis, Great Slaty Woodpecker, Mulleripicus pulverulentus, Meyglyptes tukki, Picus puniceus, and Sasia abnormis.  Cuckoo-shrike Coracina striata and Pitta sordia were also discovered.   Wetlands (peat swamp forest, heath forest, and riparian areas) should be better protected due to their importance to many species, particularly from destruction and loss of habitat caused by forest fires.

FEATURES OF THE DEVELOPMENT OF METABOLIC VIOLATIONS IN CHILDREN POPULATION, RESIDING IN CONDITIONS OF CHRONIC PERORAL EXPOSURE OF CHLORORGANIC COMPOUNDS

2018 ◽  
pp. 40-44
Author(s):  
K.P. Luzhetsky ◽  
O.Yu. Ustinova ◽  
S.V. Kleyn ◽  
A.Yu. Vandysheva ◽  
S.A. Vekovshinina
Keyword(s):  
Drinking Water ◽  
Metabolic Disorders ◽  
Endocrine System ◽  
Resistance Index ◽  
Carcinogenic Risk ◽  
Oral Exposure ◽  
Excess Body Weight ◽  
Long Time ◽  
Group A ◽  
High Concentrations

Sanitary and hygienic analysis of drinking water quality was carried out and health risk assessment of the population living in the industrial areas of the Perm region and consuming drinking water with high content of organochlorine compounds (Tetrachloromethane to 3.7 MPC, chloroform to 2.8 MPC). In the conditions of oral exposure to COC in the population formed unacceptable non-carcinogenic risk of endocrine system pathology (HI = 1.72, due to the influence of chloroform (85.7 %). In exposed children with high concentrations of chloroform and Tetrachloromethane in the blood, endocrine system pathology was diagnosed 2,0–2,4 times more often, the relative risk of obesity (E66.0) and redundant power supply (E67.8) 2.4 times higher than the indicators of the comparison group. A reliable causeand– effect relationship between the development of metabolic disorders (obesity and overweight) and the consumption of drinking water with high content of chos (OR = 2,4; DI = 1,05–6,8) was established; the proportion of the explained variance was R2 = 0,3–0,34; 85,4 ≤ F ≥ 112,8; p < 0,001. As features of the development of metabolic disorders in the population for a long time consuming drinking water with high content of chos (Tetrachloromethane, chloroform) revealed a sharp disharmony of physical development, early formation of excess body weight and obesity, an increase of 1,4–1,6 times the level Of C-peptide and leptin in the blood, insulin resistance index HOMA-IR, (p < 0,05).

scholarly journals KEANEKARAGAMAN JENIS POHON PENYUSUN VEGETASI DI HUTAN RAWA GAMBUT PADA KAWASAN HUTAN LINDUNG GUNUNG AMBAWANG KECAMATAN KUBU KABUPATEN KUBU RAYA

2019 ◽  
Vol 7 (3) ◽  
Author(s):  
Bayu Aji Prasetyo ◽  
Togar Fernando Manurung ◽  
Hafiz Ardian
Keyword(s):  
Organic Matter ◽  
Species Diversity ◽  
Forest Floor ◽  
Systematic Sampling ◽  
Swamp Forest ◽  
Forest Protection ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Long Time

Peatland is a weatland ecosystem formed by the accumulation of organic matter on the forest floor from the debris of the vegetation above it for a long time. This process occurs because of the slow rate of decomposition compared to the rate of deposition of organic matter on the wet/inundated forest floor. This study aims to determine the vegetation species diversity found in the peat swamp forest of the area of Gunung Ambawang protected forest in Kubu Sub-District of Kubu Raya Regency. The method used in this study is a plot method with the initial determination of the plot carried out through purposive sampling then the other plots were carried out by systematic sampling. Observation of forest compositionwas made in 5 (five) observation plots, with a length of 200 m, width of each plot being 20 m and distance between plots 100 m. The research found 39 species of vegetation dominated by medang species (Litsea sp) of the Lauraceae family, which is the most common vegetation found in the peat swamp forest area in the protected forest og Gunung Ambawang.Keywords: peat swamp forest, protection forest, species diversity

scholarly journals Dynamics of the Thermal Uplifting in the Atmosphere Under a Continuous Supply of Heat: Practical Application Examples

2021 ◽  
Vol 2 (1) ◽  
pp. 5-16
Author(s):  
Leonid Chernogor
Keyword(s):  
Forest Fires ◽  
Large Scale ◽  
Acoustic Emissions ◽  
Wide Band ◽  
Excess Temperature ◽  
Long Time ◽  
The Russian Federation ◽  
Precursors Of Earthquakes ◽  
Peat Fires ◽  
Instantaneous Energy

The author has earlier considered the dynamics of an isolated thermic arising from an instant heat release. The rigorous analytical, as well as simplified, solutions describing the dynamics of the uplifting of a spherical thermic have been obtained. Such a thermic appears during a short-term release of heat, e.g., during an explosion. The uplifting of a meteoroid thermic has also been studied. The theory of the thermic has found applications in the magnetic precursors of earthquakes. At the same time, the heat can be supplied during many hours or even days when big forest fires occur, peat fires burn, volcano eruptions occur for a long time, and during the release of heat before earthquakes. The dynamics of the uplifting of a thermal under these circumstances is considerably different from an instantaneous energy release. Employing the cylindrical model of a thermic, the dynamics of the thermic has been studied in the case of the continuous supply of heat. Within the model, the analytical solutions to the set of equations governing the temporal dependences of the velocity of a parcel of the heated air and the position of the upper bound of the thermic, as well as the excess temperature in the heated parcel have been obtained. The upper thermal boundary speed and location has been shown to increase with uplifting, while the excess temperature to gradually decrease. The numerical estimation has been performed for characteristic situations. The ecological consequences of large-scale fires, as well as the mechanisms for generating gravity waves by the thermals, are discussed. The physics-based mechanisms for generating acoustic wide-band emissions by the thermals have been analyzed; the wave periods have been estimated to be 1–103 s. The energy of acoustic emissions from a big fire has been estimated to be approximately 1014 J. At the same time, the energy of acoustic emissions from all fires that occurred in the Russian Federation in 2020 amounts to 7∙1016 J, while in Ukraine it is three orders of magnitude lower.

scholarly journals The Covid-19 pandemic impact on indigenous people livelihoods in the peat swamp forest ecosystem in Central Kalimantan Indonesia

2021 ◽  
Vol 894 (1) ◽  
pp. 012023
Author(s):  
D Suwito ◽  
Suratman ◽  
E Poedjirahajoe
Keyword(s):  
Medicinal Plants ◽  
Indigenous People ◽  
Forest Fires ◽  
Forest Products ◽  
Climate Mitigation ◽  
Swamp Forest ◽  
Peat Swamp Forest ◽  
Peat Swamp ◽  
Study Results ◽  
The Impact

Abstract Global tropical peat swamp forest ecosystems mostly are found in Indonesia. However, these unique yet fragile ecosystems are subject to deforestation and degradation due to forest fires and land conversion. Peat swamp forests are well known for their ecosystem services related to global climate mitigation because they store carbon inside and are very vulnerable to forest fires. Another direct function is providing various needs for the indigenous people livelihoods who live close to and in the areas. This study was conducted qualitatively to assess the forest utilization and the impact of the COVID-19 pandemic on the livelihoods of indigenous people. The study results show that the Dayak Ngaju Communities utilize the forest for timber, non-timbers, medicinal plants, foods, and religious culture. There is no significant impact of COVID-19 on forest product collection activities, but the pandemic impacts the marketing and sales of forest products. The marketing of fish and other non-timber forest products has been negatively affected due to decreased demand and limited transportation. On the contrary, the use, need, and demand for medicinal plants for the traditional medicine of COVID-19 is increasing significantly and improving local livelihoods.

Performance Study of Some Reverse Osmosis Systems for Removal of Uranium and Total Dissolved Solids in Underground Waters of Punjab State, India

2014 ◽  
Vol 4 (2) ◽  
pp. 467-476
Author(s):  
Nisha Sharma ◽  
Jaspal Singh ◽  
Barjinder Kaur
Keyword(s):  
Drinking Water ◽  
Reverse Osmosis ◽  
State Government ◽  
Total Dissolved Solids ◽  
Internal Exposure ◽  
Drinking Water Source ◽  
Performance Study ◽  
Dissolved Solids ◽  
Underground Waters ◽  
High Concentrations

Radionuclides (uranium, thorium, radium, radon gas etc.) are found naturally in air, water, soil and rock. Everyday, we ingest and inhale these radionuclides through the air we breathe and through food and water we take. Out of the internal exposure via ingestion of radionuclides, water contributes the major portion. The natural radioactivity of water is due to the activity transfer from bed rock and soils. In our surveys carried out in the past few years, we have observed high concentrations of uranium and total dissolved solids (TDS) in drinking waters of some southern parts of Punjab State exceeding the safe limits recommended by national and international agencies. The main drinking water source is the underground water procured from different depths. Due to the highly saline taste, disorders in their digestive systems and other ailments, people are installing reverse osmosis (RO) systems in their houses. Some RO systems have been installed on commercial basis. The state government is also in the process of installing community RO systems at the village level. As high values of uranium are also undesired and may pose health hazards due to radioactivity and toxicity of uranium, we have conducted a survey in the field to study the performance of various RO systems for removal of uranium and TDS. Water samples from about forty RO systems from Faridkot, Mansa, Bathinda and Amritsar districts of Punjab State were collected and analyzed. Our results show that some RO systems are able to remove more than 99% of uranium in the underground waters used for drinking purposes. TDS values are also reduced considerably to the desired levels. So RO systems can be used to avoid the risk of unduly health problems posed by high concentrations of uranium and TDS in drinking water.

PTSA (pressure and thermal swing adsorption) method to remove trihalomethanes from drinking water

1997 ◽  
Vol 35 (7) ◽  
pp. 243-250 ◽  
Author(s):  
Shigekazu Nakano ◽  
Tomoko Fukuhara ◽  
Masami Hiasa
Keyword(s):  
Drinking Water ◽  
Residual Chlorine ◽  
Remarkable Difference ◽  
Adsorption Method ◽  
Heating And Cooling ◽  
Point Of Use ◽  
Thermal Swing Adsorption ◽  
Long Time ◽  
Musty Odor ◽  
Vacuum Heating

It has been widely recognized that trihalomethanes (THMs) in drinking water pose a risk to human health. THMs can be removed to a certain extent by the conventional point-of-use (POU) unit which is composed of activated carbon (AC) and microfilter. But it's life on THMs is relatively shorter than on residual chlorine or musty odor. To extent the life of AC adsorber, pressure and thermal swing adsorption (PTSA) was applied by preferential regeneration of chloroform. PTSA was effective to remove THMs, especially chloroform. Adsorption isotherms of chloroform at 25 and 70°C showed a remarkable difference so that thermal swing was considered effective. Chloroform was also desorbed by reducing pressure. By vacuum heating at 70°C, chloroform was almost desorbed from AC and reversible adsorption was considered possible. A prototype of POU unit with PTSA was proposed. Regeneration mode would consist of dewatering, vacuum heating and cooling (backwashing). The unit was maintained in bacteriostatic condition and could be used for a long time without changing an AC cartridge.

scholarly journals Environmentally persistent free radicals are ubiquitous in wildfire charcoals and remain stable for years

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Gabriel Sigmund ◽  
Cristina Santín ◽  
Marc Pignitter ◽  
Nathalie Tepe ◽  
Stefan H. Doerr ◽  
...  
Keyword(s):  
Reactive Oxygen Species ◽  
Free Radicals ◽  
Reactive Oxygen ◽  
Resonance Spectroscopy ◽  
Oxygen Species ◽  
Pyrogenic Carbon ◽  
Spin Resonance ◽  
Long Time ◽  
High Concentrations

AbstractGlobally landscape fires produce about 256 Tg of pyrogenic carbon or charcoal each year. The role of charcoal as a source of environmentally persistent free radicals, which are precursors of potentially harmful reactive oxygen species, is poorly constrained. Here, we analyse 60 charcoal samples collected from 10 wildfires, that include crown as well as surface fires in forest, shrubland and grassland spanning different boreal, temperate, subtropical and tropical climate. Using electron spin resonance spectroscopy, we measure high concentrations of environmentally persistent free radicals in charcoal samples, much higher than those found in soils. Concentrations increased with degree of carbonization and woody fuels favoured higher concentrations. Moreover, environmentally persistent free radicals remained stable for an unexpectedly long time of at least 5 years. We suggest that wildfire charcoal is an important global source of environmentally persistent free radicals, and therefore potentially of harmful reactive oxygen species.

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