Samuli Joensuu

Säätekijoiden vaikutus ojitettujen turvemaiden mäntyjen sädekasvuun

Joensuu S. Säätekijoiden vaikutus ojitettujen turvemaiden mäntyjen sädekasvuun.

Tiivistelmä

The aim of this study is to examine the effect of various climatic factors on the variation in the radial growth of Scots pine growing on drained peatlands. The computed radial growth indices of peatland stands were compared to the corresponding radial growth indices of pines on mineral soils and the results show that the variation in radial growth is rather similar in both mineral soil and drained peatland stands. The most important climate factors affecting the radial growth of Scots pines on the ditch-side segments of the strip between ditches are the effective accumulative temperature of the previous growing season and the humidity (precipitation/mean temperature) in the beginning of the growing season in question. On the centre segment of the strip the most important climatic factor is precipitation sum of the previous growing season. Site quality index, condition of drainage and diameter of the trees seem to affect the correlation between various climatic factors and the radial growth of Scots pines in drained peatlands.

Vastaanotettu 31.10.2017 Julkaistu 1.1.1984

Katselukerrat 1131

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