التفاصيل البيبلوغرافية
| العنوان: |
UTICAJ KLIMATSKIH PROMENA NA POTREBE PRIRODNIH TRAVNJAKA ZA VODOM U SRBIJI. (Bosnian) |
| Alternate Title: |
THE IMPACT OF CLIMATE CHANGE ON THE WATER REQUIREMENT OF GRASSLANDS IN SERBIA. (English) |
| المؤلفون: |
Stričević, Ružica J., Simić, Aleksandar S., Mandić, Mirjam P. Vujadinović, Sokolović, Dejan R. |
| المصدر: |
Journal of Agricultural Sciences, Belgrade; 2021, Vol. 66 Issue 3, p291-307, 17p |
| مصطلحات موضوعية: |
WATER shortages, ATMOSPHERIC temperature, ATMOSPHERIC models, CLIMATE change, GREENHOUSE gases, GRASSLANDS |
| مصطلحات جغرافية: |
SERBIA |
| Abstract (English): |
Due to the air temperature increase, longer growing seasons and erratic rainfalls in the last two decades, natural grasslands like meadows or pastures grow in unfavourable climatic conditions that disable the regeneration. The aim of this work is to assess the impact of climate changes on the water requirement of grasslands in Serbia. The results of ensembles of nine regional climate models from the EURO-CORDEX database were used to analyse future climatic conditions. As the most probable value, the median of scores obtained for each ensemble member was considered. The period of 1986-2005 was used as the reference. The time slices in future periods are: 2016-2035 (the near future), 2046-2065 (the mid-century) and 2081-2100 (the end of the century). Analyses were conducted for two scenarios of GHG emissions: RCP4.5 and RCP8.5. Permanent grasslands will be more prone to drought risks in the future. Water shortage could be expected at the end of May when the water stored in the soil will be depleted by the duration of drought until September heavy rains. According to both scenarios, an increment of water requirement of 7% could be expected in the near future. The RCP4.5 scenario projects an increase in the water requirement in the range of 10.7-24.2% from the mid to the end of the century. The less favourable but more realistic RCP8.5 scenario projects a water need increment in the range from 4% to 14 % in the mid-century and 28.4-41.9% toward the end of the century. Recent research indicates that drought resistance will be developed through natural diversity and the spread of species resistant to high temperatures and water scarcity. [ABSTRACT FROM AUTHOR] |
| Abstract (Bosnian): |
Usled povećanja temperature vazduha sve dužeg vegetacionog perioda i promenljivih količina padavina poslednje dve decenije, livade i pašnjaci Srbije sve češće ostaju bez dovoljno vode za regeneraciju. Cilj ovog rada je da preko pet reprezentativnih lokaliteta sagleda uticaj klimatskih promena na raspoloživost vode za prirodne travnjake na području Srbije. Za analizu buduće promene klimatskih uslova na teritoriji Republike Srbije korišćeni su rezultati ansambla od devet regionalnih klimatskih modela iz baze EURO-CORDEX. Za svaki od 9 modela je izračunat deficit/suficit vode, na kraju za najverovatniju vrednost deficita vode uzeta je medijalna vrednost za svaki proučavani vremenski period. Referentni period je 1986-2005, budući periodi su: 2016-2035 (bliska budućnost), 2046-2065, (sredina veka) i 2081-2100 (kraj veka). Analize su urađene za dva izabrana scenarija emisija gasova staklene bašte: RCP4.5 i RCP8.5. Vegetacija prirodnih travnjaka će biti izložena povećanom riziku od suša. Nedostatak vode se očekuje već krajem maja, kada se iscrpe zalihe vode u zemljištu, i trajaće sve do prvih značajnijih kiša u septembru. Po oba scenarija, očekuje se smanjenje raspoloživih voda do 7% u bliskoj budućnosti. Po scenariju RCP4.5 od sredine do kraja veka očekuje se povećanje deficita vode između 10,7% i 24,2%. Nepovoljniji, mada verovatniji scenario RCP8.5, prikazuje da će povećanje nedostatka vode sredinom veka varirati od 4% do 14%, a do kraja veka između 28,4% i 41,9%. Otpornost na sušu će se razvijati prirodnom raznolikošću i širenjem vrsta otpornih na visoke temperature i oskudicu vode na uštrb osetljivih trava, pogotovo u sušnijem delu Srbije na plićim zemljištima. [ABSTRACT FROM AUTHOR] |
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