Effects of patch characteristics on net increment of stand volume in hardwood plantations in northern Japan
2007
Kunisaki, T.(Iwate Univ., Morioka (Japan). Faculty of Agriculture) | Shibata, M. | Kohda, T. | Watanabe, N.
We examined the correlations between patch characteristics and the net increment in stand volume in thirty hardwood plantations located in the Takizawa Experimental Forest of Iwate University, northern Japan. The periodic net increment in the stand volume between 1994 and 2004 was positively correlated with the mean annual increment in the stand volume in 1994. In contrast, the mean annual increment in the stand volume in 1994 was negatively correlated with the between-stand competition index (BCI). The variation in the BCI decreased with the stand area, but some stands with areas of - 0.2 ha had high BCI values, indicating strong competition among neighboring stands. In conclusion, the periodic net increment in the stand volume is low in stands with areas of - 0.2 ha and heights lower than those of neighboring stands.
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