AGROCHEMICAL PROPERTIES MONITORING OF THE VARIOUS LANDS WITHIN THE AGROLANDSCAPE

Vestnik of the Russian agricultural science ◽

10.30850/vrsn/2020/1/27-30 ◽

1970 ◽

pp. 27-30

Author(s):

D. A. Ivanov ◽

O. V. Karaseva ◽

M. V. Rublyuk

Keyword(s):

Soil Loss ◽

Granulometric Composition ◽

Land Allocation ◽

Initial State ◽

Agrochemical Properties ◽

Significant Difference ◽

Long Term Monitoring ◽

Output Field ◽

Term Monitoring

The paper presents the results of a statistical analysis of data on long-term monitoring of the agrochemical properties of soils of various lands within the reclaimed agrolandscape. Research was conducted in 1997-2012. on the agroecological transect of the VNIIMZ polygon - a narrow field 1300 m long that intersects all the main landscape positions of the end moraine hill. During the monitoring, two rounds of agrochemical surveys of the transect territory were carried out: 1. In 1997, the initial state of the soils was investigated; 2. In 2012, the state of the soils of the output field and crop rotation array. Agrochemical parameters of soils (various types of acidity, content of plant nutrients and humus) were determined at the sampling points regularly located along the transect. The research results were statistically processed based on the STATGRAPHICS plus package. It was revealed that during the research, the same type of evolution of the agrochemical parameters of soils of different lands occurred - acidification of soils, loss of the basic elements of plant nutrition during the accumulation of humus are observed everywhere. By 2012, the spatial variability of most agrochemical parameters of soils of different lands mainly began to depend on the granulometric composition of soils. A significant difference was found in the mechanism of soil loss of potassium and phosphorus - potassium migration mainly depends on the intensity of eluvial processes in the agrolandscape, and phosphorus moves laterally along the plow sole. Based on the results obtained, it is possible to develop a system of adaptive land allocation in an agrolandscape, which allows controlling degradation processes in soils.

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Abstract 13716: Racial Differences in Patients With Cryptogenic Stroke With Insertable Cardiac Monitors

Circulation ◽

10.1161/circ.142.suppl_3.13716 ◽

2020 ◽

Vol 142 (Suppl_3) ◽

Author(s):

mark heckle ◽

Eva Ingram ◽

Issa Pour-Ghaz ◽

Andrei V Alexandrov ◽

Sunil K Jha ◽

...

Keyword(s):

Racial Differences ◽

Demographic Data ◽

Cryptogenic Stroke ◽

Health Science ◽

University Hospital ◽

Science Center ◽

Significant Difference ◽

Long Term Monitoring ◽

Term Monitoring

Introduction: African American (AA) patients have a higher incidence of stroke but lower prevalence of atrial fibrillation (AF). Studies involving long term monitoring with implantable cardiac monitors (ICM) for AF after cryptogenic stroke are limited by the under-representation of the AA population. Objective: We sought to assess racial differences in the diagnosis of AF by implantable cardiac monitors in patients with cryptogenic stroke. Methods: We performed a retrospective chart review study at Methodist University Hospital, University of Tennessee Health Science Center, Memphis TN. We included patients with cryptogenic stroke who received an ICM from September 2014 to June 2019 to assess for AF. Race and additional demographic characteristics were obtained from the electronic medical records. Interrogation reports from the ICMs were obtained by remote monitoring as well as clinic visits. Fisher exact and student t test were used to compare demographic data as well as the incidence of AF in these patients. Results: A total of 219 patients with cryptogenic stroke who underwent ICM implantation were included, of which 129 (58.9%) were AA. In the AA cohort, the patients were significantly younger than (62.3 versus 65.8 years; p =0.04) and had a significantly higher prevalence of hypertension (92.2% versus 68.5%; p <0.01) and diabetes mellitus (40.3% versus 27.3%; p =0.04). Upon a mean follow up of 10.6 months, a total of 39 patients (17.8%) were diagnosed with AF on ICM monitoring. The mean time to the incidence of AF was 7.4 months. There was no significant difference in the incidence of AF in the AA population (17.8%) as compared to the rest of the population (17.8%) ( p =1.00). Conclusion: In this single center study of patients with cryptogenic stroke who underwent long term monitoring with ICM, there was no significant difference in the incidence of AF between AA and the rest of the population. We conclude that ICM’s have an equally important role in AF detection in AA patients as in the general population with cryptogenic stroke.

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Influence of the decontamination work on suspended sediment dynamics and 137Cs migration after the Fukushima nuclear accident

10.5194/egusphere-egu21-14891 ◽

2021 ◽

Author(s):

Bin Feng ◽

Yuichi Onda ◽

Yuki Yamanaka ◽

Keisuke Taniguchi

Keyword(s):

Estimation Method ◽

Sediment Supply ◽

Potential Health ◽

Study Region ◽

Local Soil ◽

Significant Difference ◽

Long Term Monitoring ◽

The Impact ◽

Term Monitoring

The FDNPP-derived 137Cs triggers significant concern due to its potential health risk and on-going environmental pollution. Approximately 27% of 137Cs are deposited in the terrestrial environment, and most of them remain in catchment until now. This severe radioactive contamination situation has driven government-led decontamination efforts to be implemented since 2012. Earlier studies reveal the influence of decontamination on local soil erosion, thereby changing the fluvial sediment supply and 137Cs concentration. However, the dynamic transport process of suspended sediments (SS) and particulate 137Cs remains unknown and the resulting variation of particulate 137Cs fluxes into the ocean hasn&#8217;t been totally evaluated because of the unavailable decontamination relevant materials and long-term monitoring data. Moreover, the shortcomings in the present SS load estimation method limited the possibility for further qualifying the impact of anthropogenic perturbation on SS load and their relative contribution by anthropogenic perturbations.Here, combining the GIS and aerial photography, we report government-scheduled decontamination dataset for the Nidda river basin and exhibit the significant difference in their land covers in spatiotemporal scales, revealing the existence of different soil erosivity therein. Through a long-term monitoring campaign spanning decontamination and post-decontamination stages, we systematically explore the dynamic influence of decontamination on SS and particulate 137Cs transport. Our results show SS load (normalized by precipitation factor) gradually increased but particulate 137Cs concentration dropped sharply with the processing of decontamination, which probably is attributable to the increasing supply of 137Cs-depleted eroded soil particulate from decontaminated land. We estimate the range of 137Cs fluxes within 122 to 588 GBq&#183;a-1 in 2013-2018 and find a continuous declination tendency in 137Cs load after 2015, suggesting that decontamination restraining fluvial 137Cs into the ocean. Based on the normalized difference vegetation index (NDVI), we evaluate the land cover changes in the decontaminated regions and applied them in the universal soil loss equation (ULSE) for estimating the fluvial load of SS during the study period. In comparison with the total SS flux in the study region, about 32%~71% of fluvial SS were thought from decontaminated land, highlighting the important role of decontamination in SS supply.&#160;&#160;Scientifically, our findings not only fill the knowledge gap in the influence of decontamination but also respond to the global concern about yearly variations of 137Cs fluxes into the ocean under the influence of decontamination. More importantly, we propose and validate an approach for evaluating the input of SS and particulate 137Cs to the ocean, which is extendable to apply in other interested catchment and forest.

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