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Presoja možnosti inventure pomladka na stalnih vzorčnih ploskvah
ID Simončič, Tina (Author), ID Bončina, Andrej (Author)

URLURL - Presentation file, Visit http://www.dlib.si/details/URN:NBN:SI:doc-K0OYXWRY This link opens in a new window

Abstract
V raziskavi smo presojali možnosti za dopolnitev gozdne inventure na stalnih vzorčnih ploskvah (SVP) s popisom pomladka. Na vsaki izmed 36 SVP smo na štirih ploskvicah (1,5 * 1,5 m) analizirali pomladek glede na drevesne vrste, višinske razrede in poškodovanost. Ocenili smo relativno natančnost skupne gostote pomladka, gostote pomladka jelke in javorja, poškodovanosti pomladka, gostote pomladka v drugi debelinski stopnji, če v vzorec vključimo eno ploskvico (2,25 m2), dve (4,50 m2), tri (6,75 m2) ali vse štiri ploskvice (9,00 m2). Variabilnost ocenjevanja gostote pomladka je največja v drogovnjakih; največja je v primeru, ko popišemo samo eno ploskev (2,25 m2). Relativni odklon zaupanja se na splošno manjša s povečevanjem velikosti popisne ploskve, izrazito se zmanjša, če popisno ploskev povečamo do 6,25 m2. Relativna natančnost ocen različnih znakov o pomladku je opazno različna. Velikost vzorca (število SVP) vpliva na natančnost ocen, ki se izrazito izboljšuje do 30 oziroma 40 analiziranih SVP.

Language:Slovenian
Keywords:gozdnogospodarsko načrtovanje, vzorčne ploskve, gozdovi, inventura pomladka, informacije o pomlajevanju
Work type:Scientific work
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publisher:Zveza društev inženirjev in tehnikov gozdarstva in lesarstva Slovenije
Year:2010
Number of pages:Str. 459-470
Numbering:Letn. 68, št. 10
PID:20.500.12556/RUL-56426 This link opens in a new window
UDC:630*52(045)=163.6
ISSN on article:0017-2723
COBISS.SI-ID:3089830 This link opens in a new window
Publication date in RUL:10.07.2015
Views:1241
Downloads:235
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Record is a part of a journal

Title:Gozdarski vestnik. slovenska strokovna revija za gozdarstvo
Shortened title:Gozd. vestn.
Publisher:Zveza gozdarskih društev Slovenije
ISSN:0017-2723
COBISS.SI-ID:3736834 This link opens in a new window

Secondary language

Language:English
Title:Estimation of possibility for regeneration inventory on permanent sampling plots
Abstract:
A possibility of supplementation of forest inventory on permanent sampling plots (PSPs) with inventory of regeneration (dbh < 10 cm) was examined. On each of the 36 analyzed PSPs four small plots (1.5 * 1.5 m) were established for registering tree species composition, height structure and damage of regeneration. Relative accuracy of estimations for regeneration density, damage of regeneration, density of fir and sycamore regeneration, and density of regeneration in the second diameter class were evaluated, when one (2.25 m2), two (4.50 m2), three (6.75 m2) or all four plots (9.00 m2) were included in the sample. The highest variability of the regeneration estimations was in the pole stands and in the case when only one plot (2.25 m2) was included in the sample. The relative confidence interval decreased with increasing size of the analyzed plot, particularly if we increased the size of the sample plot to 6.25 m2. The relative accuracy of regeneration estimations differed significantly. The size of the sample (number of analyzed PSPs) influenced the relative accuracy of the estimations which was significantly improving up to 30-40 analyzed PSPs.


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