Effects of cutting cycle and spacing on carbon content of willow [Salix]
2004
Park, G.S. (Kyushu Univ., Fukuoka (Japan)) | Ohga, S.
The influence of cutting cycle and plant spacing on carbon accumulation in willow aboveground biomass and soil were studied at Tully, New York. Willow clone SVI was planted in 6.0 x 6.0m plots at three spacing, 0.3 x 0.3, 0.3 x 0.9 and 0.6 x 1.1m and harvested annually, biennially and triennialy. All plots were fertilized and irrigated. Among all treatment combinations, the greatest average annual aboveground carbon accumulation (13.6t ha sup(-1) yr sup(-1)) occured in plants harvested triennially grown at 0.3 x 0.9m spacing. Aboveground C content in plots harvested triennially was significantly greater than in annually harvested plots (but there was no significant difference between annually and biennially harvested plots). Aboveground C accumulation was not effected by plant spacing probably caused by competition among the plants at these dense spacings. Soil C content was not effected by harvest cycle or plant spacing.
显示更多 [+] 显示较少 [-]