ŠIRENJE PAJASENA (AILANTHUS ALTISSIMA (MILL.) SWINGLE) U URBANOM PODRUČJU: PRIMJER GRADA OSIJEKA (REPUBLIKA HRVATSKA)

Autor: Štefanić, Edita, Zima, Dinko, Domačinović, Martin, Lucić, Pavo, Rašić, Sanda
Jazyk: angličtina
Rok vydání: 2023
Předmět:
Zdroj: Zbornik Veleučilišta u Rijeci
Volume 11
Issue 1
ISSN: 1849-1723
1848-1299
Popis: Three-of-heaven (Ailanthus altissima (Mill.) Swingle) is considered as one of the most invasive plant species worldwide in rural and urban environment. Although tree-of-heaven is commonly observed throughout the city of Osijek (Croatia), its prevalence and frequency has not been documented. This study has been conducted from May to September 2022 in the streets of Osijek to determine the distribution, abundance and competitive advantage of this species. A survey was performed by sampling randomly selected 20 quadrats in each city district, having together 140 phytocoenological records, and presence-absence of tree-of heaven was recorded in each plot. Where present at urban habitats, the number of threes were recorded and categorized approximately by the diameter at breast height (dbh). Habitats were distinguished as follows: alleys, abandoned private areas, public areas, ruderal sites, cracked walls and road edges. Risk assessment analysis were prepared by combining quantitative (number of trees per plots) and qualitative (four categories: biological characteristics and dispersal abilities, ecological amplitude and distribution, ecological impact, and difficulty to control) data. There was e recorded a total of 189 tree-of-heaven, occurring both as solitary plants or in developed stands. The habitat types with the highest rate of tree-of-heaven are abandoned private areas (34%) followed by public areas (31%). Out of the total, 55% of the recorded tree-of heaven are young individuals belonging to the very small and small diameter classes, and are mainly present on abandoned private and public areas. Ecological impact and biological characteristics are primary course of its landscape spread.
Pajasen (Ailanthus altissima (Mill.) Swingle) je jedna od najinvazivnijih biljnih vrsta širom svijeta kako u ruralnim, tako i u urbanim područjima. Premda je pajasen široko rasprostranjen na području grada Osijeka (Hrvatska), njegova prevalencija i frekvencija još do sada nije zabilježena. Istraživanje je sprovedeno od svibnja do rujna 2022. na osječkim ulicama kako bi se utvrdila njegova distribucija, abundacija i kompetitivna sposobnost. Istraživanje je obavljeno metodom slučajno odabranih kvadrata unutar svakog gradskog kvarta, što je ukupno iznosilo 140 fitocenoloških snimaka. Na plohama gdje je utvrđen pajasen, pobrojane su sve individue i kategorizirane su prema obujmu prsnog promjera stabla. Plohe su razvrstane kao: ulice, napušteni privatni posjedi, javne površine, ruderalna staništa, napuknuti zidovi i rubovi puteva. Procjena rizika pripremljena je kombinacijom kvantitativnih (broj individua po plohi) i kvalitativnih kategorija (biološka obilježja i sposobnost širenja, ekološke amplitude i rasprostranjenost, ekološki utjecaj i poteškoće u suzbijanju). Utvrdili smo ukupno 189 stabala pajesena, koji su bili prisutni i kao solitarna drva a također i oblikujući nakupine. Od urbanih staništa, s najvećim postotkom (34 %) pajasen je utvrđen na napuštenim privatnim posjedima a zatim slijede javne površine (31 %). Od ukupno zabilježenih vrsta, 55 % pajasena su mladice koje pripadaju kategoriji stabala s vrlo malim ili malim promjerom debla i uglavnom su rašireni na napuštenim privatnim posjedima i javnim površinama. Ekološka i biološka obilježja pajasena primarno su zaslužna za njegovo širenje urbanim prostorima grada Osijeka.
Databáze: OpenAIRE
Externí odkaz: