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Title:Analiza uspešnosti vzpostavitve nadomestnega habitata Črni log - Hotiška gmajna s poudarkom na rastni uspešnosti sadik
Authors:Al Sayegh-Petkovšek, Samar (Author)
Language:Slovenian
Tipology:1.01 - Original Scientific Article
Organisation:LogoZGDS - Zveza gozdarskih društev Slovenije
Abstract:Analizirali smo vzpostavitev nadomestnega habitata Črni log - Hotiška gmajna, ki je bil osnovan jeseni 2010 s sajenjem predvsem dveletnih sadik drevesnih in grmovnih vrst kot omilitveni ukrep zaradi izgube gozdnih površin v Črnem logu ob izgradnji avtocestnega odseka Beltinci-Lendava. V obdobju od 2011 do 2017 smo določili deleže preživetja, izdelali ocene vitalnosti in določili višinski ter debelinski prirastek za 566 sadik sedmih drevesnih vrst (črna jelša, dob, gorski javor, divja češnja, maklen, čremsa in poljski brest), rastočih na 26 raziskovalnih ploskvah. Sajenje je bilo praviloma uspešno pri vseh analiziranih vrstah, z izjemo divje češnje, kljub nekoliko večjem izpadu v drugem rastnem obdobju (dob, črna jelša, čremsa) oziroma še tri leta po sajenju (dob). Domnevamo, da je na zmanjšano preživetje sadik v letu 2012 vplivala suša v obdobju od oktobra 2011 do februarja 2012. Hkrati so v aprilu 2012 poročali o spomladanski pozebi, za katero je zlasti občutljiv dob, katerega povprečni delež preživetja se je povečal na okoli 70 % šele v letu 2015 in se nato ni več bistveno spremenil. Na podlagi opaženih poškodb divje češnje, čremse in maklena že v letu 2011 ter gorskega javorja in poljskega bresta v letu 2012 sklepamo, da je tudi objedanje divjadi vplivalo na manjši delež preživetja, vendar manj kot neugodne vremenske razmere. V tretjem letu (2013) po vzpostavitvi nadomestnega habitata sta bila povprečni višinski in povprečni debelinski prirastek na koreninskem vratu za vse drevesne vrste, z izjemo divje češnje, pozitivna in bistveno večja od prejšnjega rastnega obdobja (april 2011 - april 2012). Upoštevaje deleže preživetja, višinsko in debelinsko priraščanje ter delež vitalnih sadik je najuspešnejša drevesna vrsta črna jelša, kar je pogoj za oblikovanje načrtovanega jelševega sestoja. Med vsemi opazovanimi vrstami pa je najmanj uspešna divja češnja. Delež preživetja sadik je bil namreč vseskozi manjši od zahtevanih 70 %, zato smo ocenili, da sajenje divje češnje na izbranih raziskovalnih ploskvah ni bilo uspešno. Na podlagi ugotovitev so jo že v jeseni 2013 ponovno sadili, vendar zunaj raziskovalnih ploskev in zato slednje ne vpliva na predstavljene rezultate. Lahko zaključimo, da se med Hotiško gmajno in Črnim logom uspešno vzpostavlja gozdni habitat, ki nadomešča prejšnje njivske površine in da bo lahko nadomestil oziroma omilil škodo zaradi izgube gozdnih površin v Črnem logu ob izgradnji avtoceste A5 na odseku Beltinci-Lendava. Pričakujemo, da bo nastali gozdni sestoj v naslednjih letih omogočil gnezdenje srednjega detla in belovratnega muharja, ki sta zaradi gradnje avtoceste izgubila del svojega habitata.
Keywords:nadomestni habitat, Črni log - Hotiška gmajna, Alnus glutinosa (L.) Gartn., Quercus robur L., Acer pseudoplatanus L., Acer campestre L., Prunus avium L., Prunus padus L., Ulmus minor Mill., sadike
Year of publishing:2019
COBISS_ID:5446310 Link is opened in a new window
UDC:630*56+630*23(045)=163.6
ISSN on article:0017-2723
OceCobissID:3736834 Link is opened in a new window
Views:215
Downloads:14
Files:.pdf GV_2019_st_5-6_final_AlSayeghPetkovsekS.pdf (633,15 KB)
 
Journal:Gozd. vestn.
Zveza gozdarskih društev Slovenije
 
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Secondary language

Language:English
Title:Analysis of the success of introduction of replacement habitat Črni log % Hotiška gmajna with emphasis on growth efficiency of planted seedlings
Abstract:We analyzed the introduction of the replacement habitat Črni log - Hotiška gmajna, which was founded in fall 2010 by planting mainly two-year seedlings of tree and shrub species as a mitigation action because of the forest area loss in Črni log due to the construction of the Beltinci-Lendava highway section. In the period 2011 - 2017 we determined the survival shares, prepared vitality evaluations and determined height and diameter increment for seven tree species (black alder, pedunculate oak, sycamore maple, wild cherry, field maple, bird cherry, and field elm) growing on 26 research plots. As a rule, the planting was successful with all analyzed species except for the wild cherry, despite a bigger loss in the second growth period (pedunculate oak, black alder, bird cherry) or three years after planting (pedunculate oak). We assumed the decreased survival of the seedlings in 2012 was affected by the drought in the period from October 2011 to February 2012. At the same time, there were reports on spring frost, which mainly the pedunculate oak is susceptible to. Its mean survival rate increased to around 70 % only in 2015 and has not changed significantly since. On the basis of the noticed damage with wild cherry, bird cherry and field maple in 2012, we gather that also browsing by the game affected the lesser survival rate but to a lesser extent than the unfavorable weather conditions. In the third year (2013) after the replacement habitat introduction, the mean height and diameter increments at the root collar were positive and significantly larger than in the previous growth period (April 2011 - April 2012) for all tree species except wild cherry. Considering the survival rates, height and diameter increments and the share of vital seedlings, the most successful tree species is the black alder. This is a condition for forming the planned alder stand. The least successful among all monitored species is wild cherry. The survival rate of the seedlings was under the required 70 % all the time, therefore we evaluated the wild cherry planting on the selected research plots as unsuccessful. On the basis of the findings, its repeated planting took place already in fall 2013 but outside of the research plots; therefore, it does not affect the presented results. We can conclude, that a replacement forest habitat is being successfully established between Hotiška gmajna and Črni log. It replaces former field areas and will be able to fill in or, respectively, mitigate the damage because of the loss of the forest areas in Črni log due to the construction of A5 highway in the Beltinci-Lendava section. We expect the emerging forest stand to enable the nesting of the middle spotted woodpecker and collared flycatcher, who lost a part of their habitat due to the highway construction.
Keywords:replacement habitat, Črni log - Hotiška gmajna, Alnus glutinosa (L.) Gartn., Quercus robur L., Acer pseudoplatanus L., Acer campestre L., Prunus avium L., Prunus padus L., Ulmus minor Mill., seedlings


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