Comparison of stand density measured as predictor of diameter increment
Yazarlar (1)
Prof. Dr. Ferhat KARA Kastamonu Üniversitesi, Türkiye
| Makale Türü |
Özgün Makale
(Diğer hakemli uluslarası dergilerde yayınlanan tam makale)
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| Dergi Adı | Journal of Bartin Faculty of Forestry | ||
| Dergi ISSN | 1302-0943 | ||
| Dergi Tarandığı Indeksler | Zoological Record | ||
| Makale Dili | İngilizce | Basım Tarihi | 12-2016 |
| Cilt / Sayı / Sayfa | 18 / 2 / 39–47 | DOI | – |
| Makale Linki | http://dergipark.gov.tr/download/article-file/272907 | ||
| UAK Araştırma Alanları |
Silvikültür
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| Özet |
| Forest regeneration, diameter growth, tree mortality, stem quality and available growing space can be significantly influenced by stand density. Average tree size is usually determined by the growing space occupied by the tree; the tree will grow faster when the amount of growing space per hectare is greater (Clutter et al., 1983). Thus, reliable measures of stand density have been needed to increase forest productivity and control competition among trees (Krajicek et al., 1961; Zeide, 2005). Consequently, numerous methods of expressing stand density have been developed by silviculturists (Reineke, 1933; Gingrich, 1967; Drew and Flewelling, 1979). Silvicultural decisions are usually made based on such measures of stand density.Stand basal area per hectare (BA), volume per hectare and trees per hectare (TPH) are quantitative measures of stand density. Percent stand stocking (Gingrich, 1967), stand density index (SDI)(Reineke, 1933), relative minimum density of full site occupancy (RMDFO)(Lhotka and Loewenstein, 2007), percent average maximum density (PAMD)(Lhotka and Loewenstein, 2007), and relative density (RD)(Turnblom, 2016) are some of the relative measures of stand density, and they refer to site occupancy as a percentage of a reference level (Ernst and Knapp, 1985). TPH is determined by counting trees in a unit area while BA (m2 ha-1) is the total cross-sectional area of the trees at breast height (dbh) in a stand. Percent stocking is the stocking level in relation to a reference level (ie 100% stocking)(Ernst and Knapp, 1985). SDI expresses stand density based on the relationships between number of trees per hectare and … |
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