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    Tytuł:
    Przyrost i wzrost nadziemnej i podziemnej czesci podrostow jodlowych
    Autorzy:
    Skrzyszewski, J.
    Szczygiel, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/813975.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    jodla pospolita
    wzrost roslin
    hodowla lasu
    Abies alba
    podrost
    lesnictwo
    system korzeniowy
    drzewa lesne
    Źródło:
    Sylwan; 2002, 146, 06; 41-49
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Przyrost i wzrost nadziemnej i podziemnej części podrostów jodłowych w Nadleśnictwie Piotrków Trybunalski
    The increment and growth of above- and belowground part of the fir undergrowth in the Piotrkow Trybunalski Forest District
    Autorzy:
    Skrzyszewski, J.
    Taranowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1008941.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    Nadlesnictwo Piotrkow Trybunalski
    hodowla lasu
    drzewa lesne
    jodla pospolita
    Abies alba
    podrost
    czesci nadziemne
    korony drzew
    strzala drzew
    czesci podziemne
    system korzeniowy
    przyrost drzew
    przyrost wysokosci
    wzrost korzeni
    abies alba
    root system
    height
    length
    growth
    increment
    poland
    Opis:
    The objective of the research was to determine the relationship between the dimensions and increment of the aboveground (easy to determine) and the belowground biomass of fir undergrowth in different shelter conditions. In the examined samples, the length of taproots (DKp) up to the age of 30 was dependent on its increment during the first three years of development. Later years saw an intensified growth of taproots. However, the differences from the first years of growth did not compensate for the differences in the first years. Reduced DKp growth was observed in the group of seedlings incrementing to a height of less than 4 cm. The height increment of fir undergrowth at about 20 years of age should not be less than 20 cm. The growth of roots and aboveground parts depends on other factors. The growth of roots was related to the growth of aboveground parts only to a small degree. Under the conditions of suppression, the extremely poor height increment of firs was compensated by the development of the aboveground biomass. With a moderate height increment (sufficient light availability) root growth was more intense. No clear relationship was found between the development of taproots and horizontal roots.
    Źródło:
    Sylwan; 2010, 154, 07; 488-498
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelowanie przyrostu pierśnicowego pola przekroju jodeł w drzewostanach rębnych
    Modelling the basal area increment in mature silver fir stands
    Autorzy:
    Skrzyszewski, J.
    Pach, M.
    Krzysztof, R.
    Szafroń, M.
    Stenka, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/989097.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewostany jodlowe
    drzewostany rebne
    jodla pospolita
    Abies alba
    przyrost drzew
    przyrost piersnicowego pola przekroju
    modelowanie
    abies alba
    diameter increment
    tending
    silviculture
    mixed model
    Opis:
    Because of the very long regeneration period, final cuts in silver fir stands are always accompanied by the growing stock maintenance, which aims to maximize the revenue by increasing the share of harvest, trees with the highest timber value. We remove trees that have reached the maximum value and leave those whose value is still increasing. The remaining trees are the more valuable, the faster their value grows. The increase of a tree diameter is one of the factors that determines the value increment. The mature silver fir stand consists of trees that in youth grew in favourable light conditions and those that survived the long period of shade, achieving small dimensions. In such stands, the adjacent trees may vary greatly in diameter not related to their age. The aim of the study was to create a model describing the relationship between the increment of silver fir basal area (BAI) and the stand morphological features, age, and the dynamics of growth in early age. The research was carried out in the Brzesko Forest District and Forest Research Station in Krynica (S Poland). The sample size equalled 45 and 57 trees respectively. We used the composite form of linear mixed model. The significant positive effect on BAI (model 1) was found for the initial breast height diameter (dbh), the relative crown length as well as the age when trees reaches the 30 cm dbh. The negative impact was observed for Lorimer C18w index. The negative relationship with the relative BAI (model 2) was found for the initial dbh, slenderness, C18w index as well as the age when trees reaches the 30 cm dbh. Conditional and marginal determination coefficients reached 48 and 42% for model 1, and 62 and 38% for model 2 respectively. The results indicate the great possibility and purpose of growing stock maintenance in the pruned silver fir stands. Selecting the trees for the removal should be based on the target dbh. Had it been reached, the firs can still be characterized by a very good current BAI values. One should leave thinner firs with a relative crown length higher than average. Treatments releasing the crowns of the remaining firs, also at the cutting stage, are justified. Smaller growth at a young age (caused e.g. by shading), does not limit the possibility of obtaining trees with significant dimensions.
    Źródło:
    Sylwan; 2017, 161, 06; 467-475
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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