scholarly journals Program of Debrief Session of the Project Researches on Environmental Rehabilitation in Asia FY2020

2021 ◽  
Vol 10 (Supplement) ◽  
pp. collo1-collo20
Keyword(s):  
Environmental Rehabilitation

scholarly journals Environmental remediation of soils polluted mainly cadmium, zinc, and copper

2014 ◽  
Vol 15 (1-2) ◽  
pp. 42-52
Author(s):  
V. L. Samokhvalova ◽  
Y. A. Pogromskaya ◽  
A. I. Fateev ◽  
S. G. Zuza ◽  
V. A. Zuza
Keyword(s):  
Heavy Metals ◽  
Contaminated Soils ◽  
Natural Soil ◽  
Technical Solution ◽  
Chemical Fixation ◽  
Plant System ◽  
Metals Pollution ◽  
Environmental Rehabilitation ◽  
Heavy Metals Pollution ◽  
Physical And Chemical

The method of remediation of soil technogenic polyelemental contaminated mainly Cd, Zn and Cu, where due to the use as a sorbent - ameliorants compounds of iron (II) and phosphate fertilizers in a certain ratio in accordance with the level of contamination of soils, increase in the efficiency of their environmental rehabilitation and recovery 's natural buffer properties, through influence on the processes of different hazard classes heavy metals migration and trophic regime in the soil, and of the plants productivity with higher rates of ecological safety. The technical result of the elaboration method is to accelerate the processes of heavy metals physical and chemical fixation by making joint structuring improver of inorganic type together with mineral substrates that are effectively reduce toxicity of pollutants, optimization and restoration of the environmental state of the soil-plant system, its resistance to pollution by heavy metals. The elaboration of the method involved the improvement of the known method, accelerated of the of physical-chemical fixation processes of heavy metals different hazard classes by application of soil improver of inorganic type compatible with the type of inorganic mineral substrates, which enables for effective impact on expanding the range of heavy metals different hazard classes unable to migration into adjacent soil environment and on their mobility, to provide optimization and restoration of the soil-plant system ecological state, its resistance to heavy metals pollution. Distinctive features and benefits of the proposed technical solution, compared with known techniques and approaches are the following: ensuring the effective reduction of the heavy metals toxicity of danger various classes with optimal conditions of physical and chemical adsorption mainly Cd, Zn and Cu by simultaneous restoration of natural soil properties (elemental composition, physical and chemical properties for the improvement of organic matter and soil trophic mode) and an allowance of the soil nutrients; resource costs reduce complexity and implementation procedures for environmental rehabilitation of contaminated soils at different levels of heavy metals pollution in areas of impact sustainable sources influence of technogenic emissions due to the accuracy of the determining the ratio of soil improvers inorganic type doses and fertilizers, effective impact of the proposed composition of the first year of application and prolongation of validity up to 5 years.

Knowledge, power and politics: the environmental policy-making process in Ethiopia

2000 ◽  
Vol 38 (1) ◽  
pp. 89-120 ◽  
Author(s):  
James Keeley ◽  
Ian Scoones
Keyword(s):  
Resource Management ◽  
Natural Resource Management ◽  
Natural Resource ◽  
Agricultural Intensification ◽  
Self Sufficiency ◽  
Policy Making Process ◽  
Environmental Rehabilitation ◽  
Key Policy ◽  
Management Policies ◽  
Actor Networks

Policy discourses urging environmental rehabilitation, and rapid agricultural intensification for food self-sufficiency are firmly entrenched in Ethiopia. This paper examines the actor-networks and key policy spaces associated with the establishment of these discourses, taking natural resource management policies, and institutionalisation of the SG-2000 extension programme as case studies. An emergent, and potentially challenging, participatory natural resource management discourse is also identified. Contrasting the regions of Tigray and the Southern Nations, Nationalities and Peoples' Region (SNNPR), the paper concludes by arguing that, with decentralisation, differences between regional administrative and political cultures are key to policy processes, affecting the degree to which central policies reflect local concerns.

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