Research on Phoebe bournei Growth at Different Slope Positions in Phoebe bournei and Cunninghamia lanceolata Mixed Forest
By investigating the growth and development condition of Phoebe bournei in mixed forests of Phoebe bournei and Cunninghamia lanceolata at different slope positions,the number of preserved plants,diameter at breast height,tree height,and crown width were included.The research results showed that the slope position had little effect on the preservation rate and crown growth of Phoebe bournei in mixed forest;However,it had a significant impact on the growth and development of Phoebe bournei's diameter at breast height,tree height,individual plant volume,and unit acre volume.Firstly,the average diameter at breast height of Phoebe bournei on the downhill slope was 0.7 cm larger compared to the middle slope,and 1.4 cm larger than that on the uphill slope;the average diameter at breast height on the middle slope was 0.7 cm larger compared to the uphill slope;Secondly,the average tree height on the downhill slope was 0.6 m higher compared to the middle slope,and 1.0m higher than that on the uphill slope,the average tree height on the middle slope was 0.4 m higher compared to the uphill slope;Thirdly,the average single plant volume on the downhill slope was 0.002 6 m3 higher compared to the middle slope,and 0.004 2 m3 higher than that on the uphill slope,the average single plant volume on the middle slope was 0.001 6 m3 higher compared to the uphill slope;Lastly,the average volume per mu on the downhill was 0.458 1 m3 higher compared to the middle slope,and 0.784 7 m3 higher than that on the uphill,the average volume per mu on the middle slope was 0.326 6 m3 higher compared to the uphill slope.Therefore,considering the goal of cultivating timberland,the mixed forest of Phoebe bournei and Cunninghamia lanceolata with Phoebe bournei as the target tree species is suitable to be planted in the middle and downhill slope.
NETL
NSTL
万方数据
