Promjena koncentracija hranjivih tvari u vodi kanala hidromelioriranog područja delte Neretve

master's thesis

• Title (english): Changes of nutrient concentration in canal waters of hydroameliorated areas of Neretva river delta
• Author: Iva Bedeković
• Mentor: Marija Romić (mentor)
• Committee member: Marija Romić (predsjednik povjerenstva)
• Committee member: Monika Zovko (član povjerenstva)
• Committee member: Marko Vinceković (član povjerenstva)
• Granter: University of Zagreb; Faculty of Agriculture; (Department of Soil Amelioration); Zagreb
• Defense date and country: 2017-09-19, Croatia
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Agronomy

Abstract

Dolina rijeke Neretve nalazi se na jugu hrvatske obale Jadranskog mora, te njen nastanak seže u dugu geološku prošlost. Nastala je nanosima velike količine suspendiranog materijala i vučenog nanosa donesenog s uzvodnog dijela sliva. U navedenom području prevladava mediteranska klima čija su obilježja vruća i topla ljeta, a blage i vlažne zime. Nekoć močvarno područje danas se koristi za poljoprivredu. Prekomjerno i neadekvatno korištenje gnojiva u svrhu povećanja prinosa predstavlja potencijalnu opasnost od ispiranja, a time i zagađenja površinskih i podzemnih voda. Da bi se spriječilo zagađenje vode putem ispranih elemenata iz gnojiva i poboljšala kvaliteta voda, Republika Hrvatska je dužna provoditi Nitratnu direktivu (91/676/EEC) koja se odnosi na kvantifikaciju utjecaja poljoprivrede na vode. Cilj ovog rada bio je utvrđivanje ionskog sastava površinske vode (pH, ECw, NO3-N, NO2-N, NH4-N i ukupni P) uzorkovane na dvanaest različitih lokacija na području delte Neretve. Uzorci su uzimani jednom mjesečno tijekom 2015. godine u okviru programa „Monitoring zaslanjenja voda i poljoprivrednih tala na području doline Neretve“. Nakon provedenih ispitivanja utvrđeno je da blizina mora utječe na zaslanjenost površinske vode, te se ona smanjuje s udaljenošću od mora. Iz dobivenih rezultata također je vidljivo da koncentracija nitrata u površinskoj vodi pozitivno korelira s prosječnom količinom oborina. U mjesecima u kojima je zabilježena najveća količina oborina, utvrđene su i najviše koncentracije nitrata. Koncentracije nitrata u površinskim vodama ipak ne prelaze graničnu vrijednost propisanu zakonom.

Abstract (english)

The Neretva Valley is located in Croatia's southern coast of the Adriatic Sea, and its emergence dates back to the distant geological past. It was created by large amounts of suspended materials and towed deposits from the upstream part of the basin which were gradually clustered together. The Mediterranean climate, which prevails in the mentioned territory, is characterized by hot, warm summers and mild, humid winters. The area, which was once a wetland, is now being used for agricultural purposes. Excessive and inadequate use of fertilizers, for the purpose of increasing yields, poses a potential risk of soil flushing, and therefore contamination of surface water and groundwater. In order to prevent flushed fertilizer elements from contaminating water and in order to improve water quality, the Republic of Croatia is obliged to produce the Nitrates Directive (91/676 / EEC) which concerns the qualification of the impact of agriculture on water. The aim of this paper was to determine the ionic composition of surface water (pH, ECw, NO3-N, NO2-N, NH4-N and total P) which was sampled on twelve different locations in the Neretva delta region. The samples were taken once every month during the year 2015 under the program "Monitoring of salinization of water and agricultural soils in the Neretva Valley". After the tests were conducted it was found that proximity to the sea indeed influenced the salinity of the surface water, which decreases with greater distance from the sea. The obtained results also made the fact that the concentration of nitrate in the surface water correlates positively with the average precipitation apparent. Records show that the highest concentrations of nitrate were determined in the months with the highest precipitation. Nitrate concentrations in surface waters did not in fact exceed the limit value prescribed by law.

• Keywords: dolina Neretve; nitrati; zaslanjivanje; kvaliteta vode
• Keywords (english): The Neretva Valley; nitrate; salinisation; water quality
• Language: croatian
• URN:NBN: urn:nbn:hr:204:351095
• Study programme: Title: Agroecology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/ magistra inženjer/inženjerka agroekologija (magistar/ magistra inženjer/inženjerka agroekologija)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Access restricted to students and staff of home institution
• Created on: 2017-10-25 12:07:14