Enzimatska aktivnost šumskog tla u oštećenom šumskom ekosustavu obične jele s rebračom

Scientific paper - Original scientific paper

• Title (english): Enzymatic activity of forest soil in damaged forest ecosystem of silver fir with hard fern
• Author: Damir Ugarković
• Author: Ivica Tikvić
• Author: Ivana Grgurić
• Author: Ivan Perković
• Author: Nataša Hulak
• Author: Vibor Roje
• Author: Petar Šutalo
• Author: Krešimir Popić
• Author's institution: University of Zagreb; Faculty of Agriculture
• Author's institution: University of Zagreb; Faculty of Forestry and Wood Technology
• Author's institution: University of Zagreb; Faculty of Science
• Scientific / art field, discipline and subdiscipline: BIOTECHNICAL SCIENCES; Forestry

Abstract (croatian)

Odumiranjem stabala mijenjaju se stanišne prilike u šumskom ekosustavu, uslijed čega dolazi do promjene mikroklime i mikrobiološke aktivnosti tla. Cilj ovoga istraživanja je utvrditi razlike u mikroklimi staništa te u enzimatskoj aktivnosti šumskog tla u trima šumskim progalama i trima šumskim sastojinama obične jele s rebračom (Blechno-Abietetum Ht. 1950). Od mikroklimatskih elemenata mjerene su temperatura zraka, temperatura tla, relativna vlažnost zraka i volumetrijska vlažnost tla. Za određivanje kemijskih svojstava tla te dehidrogenazne i proteolitičke aktivnosti tala prikupljeni su kompozitni uzorci tla s dubine od 0 do 10 cm. U šumskim progalama utvrđene su značajno više vrijednosti temperatura zraka i tla te značajno niže vrijednosti relativne vlažnosti zraka i volumetrijske vlažnosti tla nego u šumskoj sastojini. Provedenim istraživanjem nisu utvrđene značajne razlike u kemijskim svojstvima tala između šumskih progala i sastojina. Zbog nesignifikantnih promjena kemijskih karakteristika tla, nisu utvrđene značajne promjene u enzimatskoj aktivnosti tala u progalama u odnosu na šumske sastojine. Temperatura zraka i temperatura tla povezane su s dehidrogenaznom aktivnosti tala, dok su temperatura tla i volumetrijska vlažnost tla povezane s proteolitičkom aktivnosti tala u šumskim progalama. Kemijska su svoj­stva tla također imale značajan utjecaj na enzimatsku aktivnost, jer se povećanjem udjela organske tvari, dušika, humusa i ugljika u tlu povećava i enzimatska aktivnost šumskih tala. Najveće korelacije enzimatske aktivnosti i kemijskih svojstava tla utvrđene su za proteolitičku aktivnost šumskih tala. Enzimatska aktivnost šumskih tala bila je najveća na početku vegetacijskog razdoblja u uvjetima optimalne temperature i vlažnosti tla.

Abstract (english)

With the decline of trees, habitat conditions change, resulting in changes in the microclimate and microbiological activity of the soil. The aim of the research is to determine the differences in the microclimate of habitats and in the enzymatic activity of forest soil in three forest gaps and three forest stands of silver fir with hard fern (Blechno-Abietetum Ht. 1950). Of the microclimatic elements, air temperature, soil temperature, relative air humidity and volumetric soil moisture were measured. Composite soil samples from a depth of 0 to 10 cm were collected to determine the chemical properties of the soil and the dehydrogenase and proteolytic activity of the soil. Significantly higher values of air and soil temperatures and significantly lower values of relative air humidity and volumetric soil moisture were found in forest gaps. The research did not reveal any differences in the chemical properties of the soil between forest gaps and stands. Due to insignificant changes in soil chemical characteristics, no significant changes in soil enzymatic activity were found in the gaps in relation to forest stands. Air temperature and soil temperature are related to soil dehydrogenase activity, while volumetric soil moisture is associated with proteolytic soil activity in forest gaps. Soil chemical characteristics also had a significant effect on enzymatic activity. By increasing the share of organic matter, nitrogen, humus and carbon in the soil, the enzymatic activity of forest soils also increases. The highest correlations between enzymatic activity and soil chemical characteristics were found for proteolytic activity of forest soils. The enzymatic activity of forest soils was highest at the beginning of the vegetation period under conditions of optimal soil temperature and soil moisture.

• Keywords (croatian): šumska progala; enzimi tla; kemijska svojstva tla; obična jela
• Keywords (english): forest gap; soil enzymes; soil chemical properties; silver fir
• Language: croatian
• Publication type: Scientific paper - Original scientific paper
• Publication status: Published
• Peer review: Peer review - domestic
• Publication version: Published version
• Journal title: Šumarski list
• Numbering: vol. 146, no. 7-8, pp. 283-291
• p-ISSN: 0373-1332
• e-ISSN: 1846-9140
• DOI: https://doi.org/10.31298/sl.146.7-8.1
• URN:NBN: urn:nbn:hr:204:598858
• Publication: 2022
• Document URL: https://hrcak.srce.hr/281738
• Type of resource: Text
• Access conditions: Open access
• Created on: 2024-02-07 12:02:56