scholarly journals Analysis of aridity indicators in the Deliblato Sands

2014 ◽  
pp. 97-112 ◽  
Author(s):  
Ratko Kadovic ◽  
Petar Spasov ◽  
Yousef Bohajar ◽  
Snezana Belanovic-Simic ◽  
Olivera Kosanin

Deliblato Sands are located in the southern part of Banat region in Vojvodina province. According to the estimated changes of basic climate parameters in this part of the Republic of Serbia during past decades very strong rise in annual air temperatures (T) was registered, an average of 0.52?C per decade. This rise in temperature increased the potential evapotranspiration (PET), which together with precipitation can increase the degree of aridity of climate in the study area. However, in the same period an increase in annual precipitation sum (P) was observed, an average of about 35 mm per decade, which may somewhat slow the aridisation of desert sands. Considering the nature, origin and significance of Deliblato Sands ecosystem, the main goal of this paper is to analyse the drought and aridity index (AI = P / PET), analyse the trend of aridisation process and its possible impact on ecosystems of this special nature reserve. Aridity index analyses were performed in meteorological stations Banatski Karlovac, Vrsac and Bela Crkva for the period 1981 - 2010 at the annual values and for the growing season. Results showed that Deliblato desert sands (Banatski Karlovac) stand at a higher frequency of arid years (AI < 0.65) compared to locations of Vrsac and Bela Crkva. On the other hand, the level of aridity has considerably increased during the vegetation period in desert sands as well in its surroundings. This intensified aridity is the result of considerable increase of potential evapotranspiration (PET) connected to season precipitation.

2020 ◽  
Vol 0 (6) ◽  
pp. 13-19
Author(s):  
Guzel Gumerova ◽  
Georgiy Gulyuk ◽  
Dmitry Kucher ◽  
Anatoly Shuravilin ◽  
Elena Piven

Data of long-term researches (2015–2018) in southern forest-steppe zone of the Republic of Bashkortostan, is justified theoretically and experimentally the mode of irrigation of potatoes on leached chernozems of unsatisfactory, satisfactory and good ameliorative condition of irrigated lands. For the growing periods of potatoes with different heat and moisture supply, the number of watering, the timing of their implementation, irrigation and irrigation norms are established. On lands with unsatisfactory meliorative state the number of irrigation depending on weather conditions of potato vegetation period varied from 0 to 3 (1.5 on average) with average irrigation norm – 990 m3/ha. With satisfactory meliorative state of lands the number of irrigation on average increased from 0 to 4 (2.3 on average) with irrigation norm – 1305 m3/ha. On lands with good meliorative state the number of irrigation was the highest – from 1 to 5 (3 on average) with average irrigation irrigation norm is 1653 m3/ha. It was noted that in the dry periods of potato vegetation the greatest number of watering was carried out (3–5 watering), and in the wet periods (2017) watering was not carried out except for the area with a good reclamation state, where only one irrigation was carried out by the norm of 550 m3/ha. Water consumption of potato was studied in dynamics as a whole during the growing season and the months of the growing season depending on weather conditions of vegetation period and land reclamation condition of irrigated lands, as well as in the control (without irrigation). The lowest total water consumption was in the area without irrigation and averaged 226.8 mm. In irrigated areas, its values increased to 319-353.4 mm. The average daily water consumption varied from 2.12 to 3.3 mm. The highest rates of potato water consumption were observed in June and July, and the lowest – in May and August. In the total water consumption of potatoes on the site without irrigation, the largest share was occupied by atmospheric precipitation and in addition to them the arrival of moisture from the soil. Irrigation water was used in irrigated areas along with precipitation, the share of which was 30.2–46.1 %.


2020 ◽  
Vol 15 (3) ◽  
pp. 49-53
Author(s):  
Aleksandra Fadeeva ◽  
Tamara Abrosimova

The studies were carried out in order to study the effect of the row spacing on the formation of the structure and productivity of plants of the early maturing soybean of Milyausha variety. In a field experiment on gray forest soils with a weakly acidic reaction and a humus content of 3.21 ... 3.83%, two sowing methods were compared: continuous sowing with a distance between rows of 15 cm and a series of rows - 30 cm. In the conditions of Kama region of the Republic of Tatarstan in dry years (2016, 2018), the duration of the growing season of the variety did not depend on the sowing methods and was 89 ... 91 days. With a moderate temperature regime and abundant precipitation (2017), with row sowing with a row spacing of 15 cm, it increased up to 105 days, in the variant with a row spacing of 30 cm - up to 109 days. An increase in the duration of the period from sowing to emergence of seedlings with a lack of heat led to a decrease in field germination according to the variants of the experiment to 70.0 ... 72.5%, plant survival - to 57.5 ... 66.0%. The maximum field germination in the experiment (95.0 and 85.0%), safety (98.2 and 94.1%) and plant survival (93.3 and 80.0%) were noted in 2018 with a high sum of air temperatures above 10 ° C and moderate moisture (total precipitation 102 mm) during the growing season. In the variant with a row spacing of 30 cm, the mass of seeds per plant in arid conditions was higher than with continuous sowing, by 2.2 ... 2.7, and in conditions of excessive moisture - by 1.7 times. An increase in the mass of seeds provided an increase in branching, the number of beans and seeds per plant. In terms of productivity and yield per unit area, there were no significant differences between the options for sowing methods. The maximum realization of the potential of productivity (289.1 and 314.7 g / m2) and yield (2.78 and 2.81 t / ha) in the experiment was achieved with the duration of the growing season 105 and 109 days (2017)


Author(s):  
Olga V. Davydenko ◽  
Piotr S. Lopukh

The analysis of the dynamics of thermal conditions during 1961–1988 and 1989–2015, as well as the adjacent decade of the study period. Changes were estimated for the average temperatures of individual months of the year, high average and maximum daily temperatures, as well as for the duration of the active vegetation period and the sums of active temperatures. The established increase in average annual temperatures was 0.4 °С per decade. At the same time, in the first half of potato vegetation (May – June) the thermal trends are ambiguous, while in the second half (July – August) the increase of average air temperatures prevails. The increase in temperatures in the summer months is accompanied by an increase in the prevalence of negative thermal effects on potato yields, which is confirmed by negative correlation coefficients of potato yield deviations from trend lines and indicators such as the air temperature in July and the number of hot days (with an average temperature above 20 °С and a maximum temperature above 30 °С). Statistical reliability of correlation between potato yield deviations from trend lines and July temperatures is confirmed only in 1989 –2015 and covers 60 administrative districts. In these and most of the remaining areas, the correlation coefficients are negative. It is established that the proposed and justified critical value of the number of days with a maximum temperature above 30 °С (10 and more) determines more than a third of the negative deviations of potato yield in most of the country, and the probability of its negative impact in the modern period is 70 %. The decrease in average yield is 12.7 c/ha (8 %). It was found that the most unfavorable hot period occurs during the tuber formation and growth of potato tubers, in connection with which possible measures of adaptation of potatoes to temperature increase are proposed: the use of heat-resistant potato varieties, the shift of potato planting dates to earlier dates, irrigation (in the case of a combination of high temperatures with insufficient moisture).


2019 ◽  
Vol 67 (4) ◽  
pp. 561-571 ◽  
Author(s):  
Milan Miljević ◽  
Olivera Bjelić Čabrilo ◽  
Verica Simin ◽  
Borislav Čabrilo ◽  
Jelena Boganč Miljević ◽  
...  

In the present study, 223 foxes were collected from various localities in the northern part of the Republic of Serbia (Vojvodina province) and examined for intestinal helminths. Among the examined foxes 178 (79.8%) were infected. The most frequently identified parasites were Mesocestoides spp. (49.3%) and Toxascaris leonina (36.3%). The parasite with the lowest prevalence was Pterygodermatites affinis (0.9%), and this is the first confirmed finding in Serbia. The other recovered species were Alaria alata (25.6%), Taenia spp. (6.3%), Echinococcus multilocularis (13%), Toxocara canis (16.6%) and Uncinaria stenocephala (14.8%). The highest number of foxes infected with E. multilocularis were in the Srem area. The results of this study indicate the presence of helminth species in red foxes in Vojvodina which may also infect humans.


2016 ◽  
Vol 107 (1) ◽  
pp. 229 ◽  
Author(s):  
Tjaša POGAČAR ◽  
Ajda VALHER ◽  
Mateja ZALAR ◽  
Zalika ČREPINŠEK ◽  
Lučka KAJFEŽ-BOGATAJ

Climate factors that are proposed to determine agriculturally less favoured areas (LFA) in Slovenia were analyzed for the period 1981–2010. Following the instructions of European Commission prepared by Joint Research Centre (JRC) 30-years averages of low air temperatures criteria (the vegetation period duration and sums of effective air temperatures) and aridity criteria (aridity index <em>AI</em>) have to be calculated. Calculations were additionally done using Slovenian Environment Agency (ARSO) method, which is slightly different when determining temperature thresholds. Only hilly areas are below the LFA low air temperatures threshold with the lowest located meteorological station in Rateče. According to aridity criteria no area in Slovenia is below the threshold, so meteorological water balance was also examined. Average water balance in the period 1981–2010 was in most of locations lower than in the period 1971–2000. Climate change impacts are already expressed as trend presence in time series of studied variables, so it is recommended to calculate trends and take them into account or to perform regular iterations of calculations.


Author(s):  
Rüstem Cangi ◽  
Halil Erdem ◽  
İsmet Acar ◽  
Neval Altıncı ◽  
Duran Kılıç

The main object of this study was to determine the effects of increasing levels of ammonium nitrate, ammonium sulphate and urea on resh the vine leaves yield in Narince grape cultivar (Vitis Vinifera L). Vines trained with bilateral cordon system was pruned to yield 5000 buds/da (24 buds/vine) above one or two buds in 2012 vegetation period. Three levels of nitrogen (0-control, 5, 10, 15 kg N /da) were applied to vines, in a split parcels with four replications. Young vine brined leaves were collected five times during growing season, and fresh brined leaves yield ( kg/da) were determined. Fertilizer form applications had significant effect on fresh leaf yield. Fresh leaf yield varied from 312.4 (Control) to 437.1 kg/da (ammonium nitrate 10 kg N/da). Vine fresh leaves yield increeased with increasing of N doses. Nitrogen applications were increased fresh leaves yield by about 30%. According to experimental results, 10 kg/da N provided the highest vine leaves yield. Ammonium nitrate treatments had given more yield vine leaves yield than the other fertilizing treatments.


2013 ◽  
Vol 93 (1) ◽  
pp. 1-14 ◽  
Author(s):  
Dragan Milosevic ◽  
Stevan Savic ◽  
Igor Ziberna

This paper represents an analysis of the time series of selected meteorological parameters: mean, maximum and minimum air temperatures, sums of effective air temperature values with the temperature thresholds 5?C and 10?C, average precipitation quantities, number of days with frost, potential evapotranspiration and water balance. Study included data from 10 meteorological stations located on the territory of the Republic of Slovenia for the period 1961-2011. Analyzes were performed on a seasonal and annual basis. The obtained results showed a statistically significant positive trends of temperature parameters and potential evapotranspiration, while average precipitation quantities and water balance had a negative trend on the seasonal and annual basis. Positive trend of number of days with frost is present on most stations. In the second part of this paper, the obtained results were associated with the phenological data (data about the development of plants) in order to determine the intensity of correlation between them.


Liquidity ◽  
2016 ◽  
Vol 5 (1) ◽  
pp. 53-64
Author(s):  
Yumniati Agustina

Investigation in various regions in Indonesia found indications of the alleged fraud that result from unccountable use and management of BOS funds. Among the findings, including payments that do not fit the technical guidelines, no accountability report, and the use of funds with unaccountable receipt. In the Regulation of the Minister of Education and Culture of the Republic of No. 161/2014, stated that: BOS is a government program that is basically forfunding the nonpersonnel operating costs of the primary education as the implementer of compulsory education program. The purpose of this study were (1) to analyze the accounting cycle and financial accountability for the use of BOS funds in the 2015, (2) to analyze the compliance of the accounting cycle and financial accountability of the BOS funds, (3) to analyze the transparency and accountability of BOS fund’s reports. The observed elementary school is SDIT X in Depok, West Java. Result shows that they do not fully compliance to the appropriate regulatory technical guidelines. On the other hand, the transparency and accountability issues show that: (1) BOS Management Team, Teachers Council and School’s Committee’s involvement in the BOS fund management, and (2) evaluation and comparison of the final report of prior periods, so that transparency and accountability of the use and management of BOS funds can be improved.


2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Gusti Muhammad Ihsan Perdana

 Legislative election in distric Tapin was spotted with a vote, conducted by members of the Commission, M. Zainnoor Wal Aidi Rahmad win a legislative candidate from the Golkar Party, namely Bambang Herry Purnama the 2014-2019. Elections Honorary Council for General Election Organizer of the Republic of Indonesia as No. 15 / DKPP-PKE-III / 2014 has imposed sanctions on Zainnoor Wal Aidi M. Rahmad form of dismissal remain as a member of the Tapin district Elections Commission since the verdict was read. Rantau’s District Court in its decision No. 135 / Pid-Sus /2014/PN.Rta, Bringing the sanctions in the form of imprisonment for 10 months with the criminal provisions do not need to be run in the future unless is another command in the verdict that convicted before time trial during the 12 (twelve months) ends have been guilty of a criminal offense and a fine of Rp. 10,000,000.00 (ten million). Dismissal sanctions remain to perpetrators as member of the district KPU Tapin have sense of fairness, but the connection with the criminal charge of criminal trials less reflectjustice for his actions that allow offenders not sentenced to imprisonment and the other party can not do the same.Keywords: Elections Tapin distric, Inflation Voice, Sanctions


1984 ◽  
Vol 16 (3-4) ◽  
pp. 485-495 ◽  
Author(s):  
D Vreugdenhil

It was not until the late Middle Ages that the sea penetrated far into the interior of The Netherlands, thus flooding three quarters of a million hectares of land. Since then half a million hectares have been reclaimed from the sea. The Dutch Government chose to preserve the remaining quarter of a million hectares of shallow sea with mudflats of the Waddensea as a nature reserve. The management objectives are at one hand to preserve all characteristic habitats and species with a minimal interference by human activities in geomorphological and hydrological processes, and at the other hand to guarantee the safety against the sea of the inhabitants of the adjacent mainland and islands and to facilitate certain economic and recreational uses of the Waddensea without jeopardizing the natural qualities. These objectives are being elaborated in managementplans.


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