Effects of organic mineral fertiliser on heavy metal migration and potential carbon sink in soils in a karst region

2017 ◽  
Vol 36 (3) ◽  
pp. 539-543 ◽  
Author(s):  
Ping Chen ◽  
Yulong Ruan ◽  
Shijie Wang ◽  
Xiuming Liu ◽  
Bin Lian
Keyword(s):  
Heavy Metal ◽  
Carbon Sink ◽  
Karst Region ◽  
Mineral Fertiliser ◽  
Organic Mineral ◽  
Metal Migration ◽  
Potential Carbon

scholarly journals INFLUENCE OF AGROCHEMICAL REHABILITATION ON THE HEAVY METAL MIGRATION TO THE WATER

AGROFOR ◽  
2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Yuri MAZHAYSKIY ◽  
Olga CHERNIKOVA ◽  
Alexey KARPOV ◽  
Otilija MISECKAITE
Keyword(s):  
Heavy Metal ◽  
Chemical Composition ◽  
Organic Amendments ◽  
Black Soil ◽  
Absorption Capacity ◽  
Pig Manure ◽  
Main Role ◽  
Organic Mineral ◽  
High Doses ◽  
Metal Migration

Soil plays the main role in the sustaining life of Earth ecosystems –it is thefundamental foundation of agriculture resources, food security, economy andenvironmental quality. The heavy metal pollution has been increasing inagricultural soils worldwide. For example, Cu is widely used as a pesticide againstfungal and bacterial diseases in crops or as a contaminant in organic amendments,or for irrigation as pig manure or sewage sludge. Soil and water pollution have thegreat impact on food safety and to human health: polluted soils have direct healthrisks, and secondary risk is connected to contamination of water supplies. Thearticlepresents the lysimetric experiment with the chemical composition results.This exploratory study aims to evaluate the influence of agrochemical rehabilitationon the heavy metal migration to the water. The chemical composition of intrasoil water has shown that contaminated black soil has a high absorption capacity ofheavy metals. The bulk of heavy metal brought about in a form of water-solublesalts wasabsorbedand converted by soil colloids of podzolized chernozemintorelatively stable compositions. Results of the analytical research showed thatorganic and organic-mineral systems, where phosphates were used in the averagevolume of 60 kg of Р2О5per hectare a year, reduced intake of cadmium in thesubsurface water. Mineral systems also impeded migration of zinc and copper tothe ground water. On the contrary, high doses of superphosphate in the fertilizersystem increased the leaching of Cd, Pb and Cu to the infiltration waters.

scholarly journals The nature of carbon flux in various ecosystem types in the Biduk-Biduk Karst Region, Berau District, East Kalimantan

2019 ◽  
Vol 76 ◽  
pp. 04005
Author(s):  
Danardono Danardono ◽  
Eko Haryono ◽  
Margareta Widyastuti
Keyword(s):  
Carbon Sequestration ◽  
Soil Respiration ◽  
Tropical Forest ◽  
Economic Value ◽  
Carbon Stocks ◽  
Karst Region ◽  
Litter Fall ◽  
Closed Chamber ◽  
East Kalimantan ◽  
Potential Carbon

Biduk-Biduk Karst Region has great potential to absorb and store organic carbon in vegetation and soil as well as to absorb inorganic carbon through the process of dissolution. The area has important economic value in supporting the REDD Program in Berau District. The purpose of this study is (1) to identify the amount of carbon stocks in various ecosystems; and (2) to identify the amount of carbon uptake in various ecosystems in the study area. Carbon stocks are computed based on four carbon sinks, i.e., above ground biomass, underground biomass, litter, and soil organic matter using the standard measurement method of SNI 7724: 2011. Carbon sequestration is calculated based on the input of carbon from the atmosphere to ecosystems through litter fall and karstification process and the output of carbon from the ecosystem to the atmosphere through soil respiration. Litter fall is measured using the litter trap method. Karstification is measured with standard limestone tablet method. Soil respiration is calculated with the closed chamber method. The results show that the ecosystems in the Biduk-Biduk Karst Region have a potential carbon stock of 4,800.92 tons/ha with the largest value in the secondary tropical forest of 732.6 tons/ha and the lowest value in the teak forest plantation of 358.2 tons/ha. Ecosystems in the Biduk-Biduk Karst Region have a potential carbon sequestration of 37.33 tons/ha/year with the largest contribution in the primary tropical forest of 7,63 tons/ha/year.

scholarly journals The Migration of Chemical Contaminants from Polyethylene Bags into Food During Cooking

2015 ◽  
Vol 9 (1) ◽  
pp. 14-18 ◽  
Author(s):  
L. Musoke ◽  
N. Banadda ◽  
C. Sempala ◽  
J. Kigozi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
The Body ◽  
Metal Concentrations ◽  
Chemical Contaminants ◽  
Heavy Metal Concentrations ◽  
Polyethylene Bags ◽  
Metal Migration ◽  
Health Complications ◽  
Banana Leaves

Cooking food in polyethylene bags has of late substituted banana leaves in Uganda. However, such a practice is risky as chemical contaminants may migrate from polyethylene bags into food during cooking causing health complications. Therefore, this study was done to identify and quantify the levels of chemical contaminants (heavy metals) in black and green polyethylene bags. Polyethylene bags were ashed and digested with acid and heavy metal concentrations determined using an AAS. Samples analyzed contained heavy metals with concentrations ranging between; 1125 - 1725, 76 - 112, 35 - 52, 18 - 31 ppm for Pb, Cd, Cr and Co respectively. Heavy metal migration studies into posho cooked in the black polyethylene bags was done at 65°C (T), 80°C (T) and 95°C (T). The highest migrated heavy metal concentrations 120.60, 12.25, 9.45 and 15.42 ppm for Pb, Cd, Cr and Co respectively were obtained at T3 at the surface of the posho cube (0.5cm) after 5 hours of heating. While the lowest values for Pb (10.60 ppm), Cd (1.26 ppm), Cr (0.20 ppm) and Co (1.55 ppm) were obtained at T1 towards the centroid of the posho cube (1.5 cm) after 2 hours of heating. Pb migrated highest followed by Co, Cr and Cd. Though small quantities migrated, over a long period of time they may accumulate in the body and cause health complications to the victims. To make this research of substantial importance to the polyethylene bag user, the findings were disseminated through media to the general public.

On the Basis of Forest Volume Expansion Method to Predict the Carbon Sink Potentiality in Daxing'anling

2012 ◽  
Vol 424-425 ◽  
pp. 128-131
Author(s):  
Ying Li Huang ◽  
Li Hong Cheng ◽  
Xiao Qiang Li
Keyword(s):  
Carbon Sequestration ◽  
Volume Expansion ◽  
Carbon Sink ◽  
Expansion Method ◽  
Forest Protection ◽  
Ecological Protection ◽  
Natural Forest Protection ◽  
Resource Environment ◽  
Potential Carbon ◽  
Area Data

The carbon sink function of nurturing forest and artificial forest have special important status in ecological protection and economic construction.This article calculates carbon sink potentiality of nurturing forest and artificial forest in Daxing'anling combining afforestation area data since "Natural Forest Protection II",applying forest volume expansion method and combining carbon sequestration function of forest. The result shows that the carbon sink potentiality in Daxing'anling is considerable.If we can explore its potential carbon value ,it will be a new source of revenue which will be a new solution to resource, environment and economy crisis.

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