The Impact of Environmental Factors on the Growth of Juglans mandshurica in Natural Forest of Changbai Mountains
In order to reveal the effect of environmental factors on the growth of Juglans mandshurica Maxim,14 representative sample area of it was selected and the correlation with 14 environmental factors and the growth index of J.mandshurica were analyzed.Result showed that: (1) different stand composition had significant effect on the growth of J.mandshurica,and diameter growth of J.mandshurica in larch forest was superior to non-larch forest,furthermore,canopy density also had significant effect on tree height of it (R=0.5049).(2) Slope degree and slope aspect had significant effect on DBH,volume (P＜0.05) and height,DBH,volume (P＜0.01),respectively,and slope position had significant negative effect on volume (R=-0.5016).(3) Altitude had positive significant correlation between DBH and volume (R=0.4918,R=0.5203),while latitude had negative correlation with volume (R=-0.5458).(4) Soil thickness and alkaline hydrolysis nitrogen content had significant effect on height of it,and the order was as follows: alkaline hydrolysis nitrogen content＞soil thickness; soil organic and pH had significant effect on DBH of it,and the order was as follows: soil organic＞pH; and alkaline hydrolysis nitrogen content had positive significant correction with volume (R=0.8314).
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万方数据
维普
