AGRICULTURAL LAND REMEDIATION DURING LARGE SCALE RADIOACTIVE CONTAMINATION (TO THE 35TH ANNIVERSARY OF THE CHERNOBYL NPP ACCIDENT)

Author(s):  
A.V. PANOV ◽  
◽  
A.N. RATNIKOV ◽  
D.G. SVIRIDENKO ◽  
N.N. ISAMOV ◽  
...  
2021 ◽  
Vol 47 (4) ◽  
pp. 399-403
Author(s):  
A. V. Panov ◽  
A. N. Ratnikov ◽  
D. G. Sviridenko ◽  
N. N. Isamov ◽  
P. N. Tsygvintsev

Author(s):  
A. V. Panov ◽  
N. N. Isamov ◽  
O. S. Gubareva ◽  
P. N. Tsygvintsev ◽  
А. N. Ratnikov ◽  
...  

On the example of the Chernobyl NPP accident, the problems of animal husbandry in case of radioactive contamination of hayfields and pastures are shown. The factors determining the accumulation of radionuclides in milk and meat are presented. It is noted that the excess of radiological standards for the content of 137Cs in livestock products in the southwestern districts of the Bryansk region is long-term and requires continuation of rehabilitation work. A classification of countermeasures and technologies in animal husbandry carried out after the Chernobyl accident is given. It was shown that the most effective was the use of Cs-binding sorbents - hexacyanoferrates for lactating cows and fattening cattle. Farms in the southwestern districts of the Bryansk region have been identified, where until now there is a risk of exceeding the standards for the content of radionuclides in livestock products. For these farms, a scheme for the use of hexacyanoferrates was proposed depending on the levels of 137Cs contamination of grassland.


2020 ◽  
Vol 4 (1) ◽  
Author(s):  
Catherine M. Febria ◽  
Maggie Bayfield ◽  
Kathryn E. Collins ◽  
Hayley S. Devlin ◽  
Brandon C. Goeller ◽  
...  

In Aotearoa New Zealand, agricultural land-use intensification and decline in freshwater ecosystem integrity pose complex challenges for science and society. Despite riparian management programmes across the country, there is frustration over a lack in widespread uptake, upfront financial costs, possible loss in income, obstructive legislation and delays in ecological recovery. Thus, social, economic and institutional barriers exist when implementing and assessing agricultural freshwater restoration. Partnerships are essential to overcome such barriers by identifying and promoting co-benefits that result in amplifying individual efforts among stakeholder groups into coordinated, large-scale change. Here, we describe how initial progress by a sole farming family at the Silverstream in the Canterbury region, South Island, New Zealand, was used as a catalyst for change by the Canterbury Waterway Rehabilitation Experiment, a university-led restoration research project. Partners included farmers, researchers, government, industry, treaty partners (Indigenous rights-holders) and practitioners. Local capacity and capability was strengthened with practitioner groups, schools and the wider community. With partnerships in place, co-benefits included lowered costs involved with large-scale actions (e.g., earth moving), reduced pressure on individual farmers to undertake large-scale change (e.g., increased participation and engagement), while also legitimising the social contracts for farmers, scientists, government and industry to engage in farming and freshwater management. We describe contributions and benefits generated from the project and describe iterative actions that together built trust, leveraged and aligned opportunities. These actions were scaled from a single farm to multiple catchments nationally.


1999 ◽  
Vol 39 (12) ◽  
pp. 63-67 ◽  
Author(s):  
B. L. Turner ◽  
P. M. Haygarth

Phosphorus (P) transfer from agricultural land to surface waters can contribute to eutrophication, excess algal growth and associated water quality problems. Grasslands have a high potential for P transfer, as they receive P inputs as mineral fertiliser and concentrates cycled through livestock manures. The transfer of P can occur through surface and subsurface pathways, although the capacity of most soils to fix inorganic P has meant that subsurface P transfer by leaching mechanisms has often been perceived as negligible. We investigated this using large-scale monolith lysimeters (135 cm deep, 80 cm diameter) to monitor leachate P under four grassland soil types. Leachate was collected during the 1997–98 drainage year and analysed for a range of P fractions. Mean concentrations of total P routinely exceeded 100 μg l−1 from all soil types and, therefore, exceeded P concentrations above which eutrophication and algal growth can occur. The majority of the leachate P was in algal-available Mo-reactive (inorganic) forms, although a large proportion occurred in unreactive (organic) forms. We suggest that subsurface transfer by leaching can represent a significant mechanism for agricultural P transfer from some soils and must be given greater consideration as a potential source of diffuse P pollution to surface waters.


Author(s):  
Jochen von Bernstorff

The chapter explores the notion of “community interests” with regard to the global “land-grab” phenomenon. Over the last decade, a dramatic increase of foreign investment in agricultural land could be observed. Bilateral investment treaties protect around 75 per cent of these large-scale land acquisitions, many of which came with associated social problems, such as displaced local populations and negative consequences for food security in Third World countries receiving these large-scale foreign investments. Hence, two potentially conflicting areas of international law are relevant in this context: Economic, social, and cultural rights and the principles of permanent sovereignty over natural resources and “food sovereignty” challenging large-scale investments on the one hand, and specific norms of international economic law stabilizing them on the other. The contribution discusses the usefulness of the concept of “community interests” in cases where the two colliding sets of norms are both considered to protect such interests.


Land ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 312
Author(s):  
Ruxandra Malina Petrescu-Mag ◽  
Hamid Rastegari Kopaei ◽  
Dacinia Crina Petrescu

Foreign land grabbing is acknowledged as a phenomenon that generates disempowerment and dispossession of local farmers, human rights violations. Previous studies have revealed the lack of ethical benchmarks in foreign large-scale land transactions that raise moral concerns. It is evident that when resources are scarce and people depend on them, the balance between values and interests transforms itself into a dilemma. Within this context, the aims of the paper were to bring to the fore critical reflection on a more ethical perspective of large-scale land acquisitions and to extend the scant information on what factors determine landowners not to sell their land to foreigners to limit land grabbing. This context justifies the need for a critical reflection on a more ethical perspective of large-scale land acquisitions. Therefore, two objectives were set. The first one is to document the role of ethics in large-scale land transactions. Based on the land grabbing literature, authors selected a set of eight land grabbing narratives, most often interrelated and overlapping, that pose ethical considerations. The second objective is to reveal how well a set of variables can predict the “Resistance to sell” the land to foreigners even when an attractive price is offered. As ethics is a social construct, the analysis captured the stakeholders’ perspective on land grabbing. Therefore, a questionnaire was applied to a sample of 332 Romanian landowners from twelve randomly selected counties to reveal their perceptions. Partial least squares structural equation modeling (PLS-SEM) was used to observe how well a set of seven variables could predict landowners’ “Resistance to sell” their land to foreign buyers. The use of PLS-SEM was justified by the existence of single items and the need to examine many structural model relations. Results showed that the variables with the strongest contribution to the prediction of the dependent variable are the “Probability to join an association for farmers rights defense”, the “Importance of the land price offered by the potential foreign buyer”, and the “Perceived effect of agricultural land conversion to urban land”. Raising awareness on the importance of buyer attributes, increasing people’s perception of the negative effect of agricultural land conversion to urban land, or strengthening the state’s image as a necessary actor to limit land grabbing will increase landowners’ resistance to sell their land to foreigners. Finally, it can be inferred that, within this frame of discussion, ethics should be valued as a means to create economically viable and morally justifiable solutions for foreign large-scale land transactions.


Insects ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 91
Author(s):  
Eric G. Middleton ◽  
Ian V. MacRae ◽  
Christopher R. Philips

Beneficial insect populations and the services that they provide are in decline, largely due to agricultural land use and practices. Establishing perennial floral plantings in the unused margins of crop fields can help conserve beneficial pollinators and predators in commercial agroecosystems. We assessed the impacts of floral plantings on both pollinators and arthropod predators when established adjacent to conventionally managed commercial potato fields. Floral plantings significantly increased the abundance of pollinators within floral margins compared with unmanaged margins. Increased floral cover within margins led to significantly greater pollinator abundance as well. The overall abundance of arthropod predators was also significantly increased in floral plantings, although it was unrelated to the amount of floral cover. Within adjacent potato crops, the presence of floral plantings in field margins had no effect on the abundance of pollinators or predators, although higher floral cover in margins did marginally increase in-crop pollinator abundance. Establishing floral plantings of this kind on a large scale in commercial agroecosystems can help conserve both pollinators and predators, but may not increase ecosystem services in nearby crops.


Author(s):  
Hildegarde Vandenhove

The accident at the Fukushima Daiichi Nuclear Power Plant has raised questions about the accumulation of radionuclides in soils, the transfer in the foodchain and the possibility of continued restricted future land use. This paper summarizes what is generally understood about the application of agricultural countermeasures as a land management option to reduce the radionuclides transfer in the food chain and to facilitate the return of potentially affected soils to agricultural practices in areas impacted by a nuclear accident.


2021 ◽  
Author(s):  
Russell Adams ◽  
Donnacha Doody

<p>Northern Ireland has been somewhat overlooked in terms of water quality modelling in the past. Many of its catchments have consistently failed to meet Water Framework Directive targets especially due to high levels of dissolved nutrients and poor ecological status. A catchment based modelling study to address this issue has not been undertaken here previously and the approach described here uses two water quality models to achieve this aim. The objectives of the modelling were firstly to identify the total load reductions (in terms of Phosphorus (P)) required to reduce in-stream loadings sufficiently for concentrations of soluble reactive P (SRP) to be reduced to achieve the WFD “Good” status levels, and secondly to split these loadings into diffuse and point components. The third objective was to identify the most likely flow pathways for the transport of the diffuse component of P to the watercourses particularly for the agricultural (mostly intensive grassland farming) land use which dominates in almost all NI catchments.</p><p>The first model applied is the Source Load Apportionment Model (SLAM) developed by the Irish EPA. This model provides a large-scale assessment of the point and diffuse load components across catchments where multiple pressures are occurring. The second model us the Catchment Runoff Flux Assessment Tool (CRAFT) which is able to back-calculate nutrient loads associated with three major flow pathways. SLAM is a static model which uses averaged loadings from diffuse agriculture and non-agricultural land uses, and point sources (where information can be obtained from various sources) to calculate N and P exports. For P, the agricultural diffuse load component uses an enhanced version of the export coefficient approach based on combining the sources of P from applied nutrients (slurry and fertiliser) and soil P. A modelling tool allows the user to evaluate load reduction scenarios where one or several components of P (both point and diffuse) are adjusted downwards to achieve the catchment’s required load reduction. The CRAFT model works on a dynamic (daily) modelling scale and has simulated sub-catchments where the SLAM model has identified the need for significant load reductions. It identifies the different reductions (P export) that are required for each flow pathway, which will then inform on the type of additional measures (e.g. sediment traps, riparian buffer strips and wetlands) that may also be required.</p><p>The initial aim of this study is to complete a pilot application to the trans-border (UK and ROI) Blackwater catchment (1360 km<sup>2</sup>). Through a review of alternative modelling options for the whole area of NI, an assessment of whether this approach is suitable for application to the entire territory can be made.</p>


2007 ◽  
Vol 67 (3) ◽  
pp. 403-411 ◽  
Author(s):  
WG. Silva ◽  
JP. Metzger ◽  
S. Simões ◽  
C Simonetti

Several studies suggest that, on a large scale, relief conditions influence the Atlantic Forest cover. The aim of this work was to explore these relationships on a local scale, in Caucaia do Alto, on the Ibiúna Plateau. Within an area of about 78 km², the distribution of forest cover, divided into two successional stages, was associated with relief attribute data (slope, slope orientation and altitude). The mapping of the vegetation was based on the interpretation of stereoscopic pairs of aerial photographs, from April 2000, on a scale of 1:10,000, while the relief attributes were obtained by geoprocessing from digitalized topographic maps on a scale of 1:10,000. Statistical analyses, based on qui-square tests, revealed that there was a more extensive forest cover, irrespective of the successional stage, in steeper areas (>10 degrees) located at higher altitudes (>923 m), but no influence of the slope orientation. There was no sign of direct influence of relief on the forest cover through environmental gradients that might have contributed to the forest regeneration. Likewise, there was no evidence that these results could have been influenced by the distance from roads or urban areas or with respect to permanent preservation areas. Relief seems to influence the forest cover indirectly, since agricultural land use is preferably made in flatter and lower areas. These results suggest a general distribution pattern of the forest remnants, independent of the scale of study, on which relief indirectly has a strong influence, since it determines human occupation.


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