Analiza stanja lišajev v popisu stanja gozdov v letu 2007

Franc Batič (Author), Damijana Kastelec (Author), Mitja Skudnik (Author), Marko Kovač (Author)

Abstract

Obrast epifitskih skorjastih, listastih in grmičastih lišajev je bila popisana v okviru standardizirane mreže na izbranem številu primerljivih drevesnih vrst na ploskvah popisa stanja gozdov leta 2007. Prikazana je pokrovnost skorjastih, listastih in grmičastih lišajev kot mediana pokrovnosti za vse skupine drevesnih vrst in pokrovnost skorjastih lišajev za bukev in listastih za smreko po razredih pokrovnosti. Na splošno je obrast slaba; največja je pri skorjastih lišajih in najslabša pri grmičastih. Ploskve z večjo lišajsko obrastjo so predvsem na območjih, oddaljenih od virov onesnaženja zraka. Ploskve s slabo obrastjo so na območjih, kjer je večji vpliv lokalnega onesnaženja ali daljinskega vnosa zračnih onesnažil. Lišajska obrast vseh treh rastnih tipov se veča s starostjo sestoja, preostali sestojni parametri pa tudi rastiščni značilno ne vplivajo na obrast. Dokaj slaba obrast gozdnega drevja z epifitskimi lišaji je še vedno posledica zračnega onesnaženja, kljub sanaciji večjih emitentov žveplovih spojin. Vzrok je verjetno še vedno veliko onesnaženje z dušikovimi spojinami iz prometa, termoenergetskih in industrijskih virov, kmetijstva in drugih virov. V določenem obsegu je slabše stanje epifitske lišajske obrasti tudi posledica uporabljene metode, v kateri je popis lišajev narejen le na spodnjem delu debla dreves, kjer svetlobne razmere pogosto niso ugodne za rast lišajev.

Keywords

gozdovi;popis stanja;gozdna inventura;epifitski lišaji;bioindikatorji;onesnaženje zraka;Slovenija;

Data

Language:	Slovenian
Year of publishing:	2011
Typology:	1.01 - Original Scientific Article
Organization:	UL - University of Ljubljana
Publisher:	Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije
UDC:	63017:63052"2007"(497.4)(045)=163.6
COBISS:	3158694
ISSN:	0017-2723
Parent publication:	Gozdarski vestnik
Views:	692
Downloads:	239
Average score:	0 (0 votes)
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Other data

Secondary language:	English
Secondary title:	Analysis of epiphytic lichen vegetation in forest inventory carried out in 2007
Secondary abstract:	Epiphytic lichen cover of crustose, foliose and fructicose lichens has been assessed within the standardized grid laid on trunks of the chosen, comparable tree species on the plots of forest inventory in 2007. Median cover of crustose, foliose and fructicose epiphytic lichens are presented in grouped analyses for all trees. The cover of crustose lichens is presented additionally for common beech and the cover of foliose lichens for Norway spruce. Generally, the epiphytic lichen cover is poor, the richest is the cover of crustose and the poorest is the cover offructicose lichens. Plots with major lichen cover are situated in remote areas with cleaner air while plots with minor epiphytic lichen cover are situated in areas affected by local sources of air pollution, some also in areas where transboundary input of air pollutants takes place. Epiphytic lichen cover increases slightly with the age of the forests stands, other stand and site parameters have no major influence. In spite of the reduction of air pollution by sulphur compounds in the last two decades in Slovenia the epiphytic lichens cover in forests remains poor. The most probable reason is the persisting air pollution by nitrogen compounds from traffic, thermal power plants, industry, agriculture and other sources. The worsened state of the epiphytic lichen cover is, to a certain extent, also the consequence of themonitoring method in which the epiphytic lichens are assessed only in the lower part of tree trunks where light conditions are not always suitablefor their growth.
URN:	URN:NBN:SI
Type (COBISS):	Scientific work
Pages:	str. 312-321
Volume:	ǂLetn. ǂ69
Issue:	ǂšt. ǂ5/6
Chronology:	2011
ID:	1726850