Comparison of spatial structures among different stand types in Saihanba Mechanized Forest Farm
1 College of Forestry, Agricultural University of Hebei, Baoding, 071001, P.R.China; 2 Mulan Forestry Administration Bureau of Hebei, Weichang, 068450, P.R.China; 3 Forest Survcy and Design Institute of Jilin Province, Changchun, 130022, P. R. China.
More Information
Received Date:
December 31, 1899
Revised Date:
December 31, 1899
Published Date:
May 29, 2010
Abstract
This study compared the spatial structures among different stand types in Saihanba Mechanized Forest Farm by using three indices, i.e. the neighborhood comparison, uniform angle index and mingling degree. The results show that there exists competition within the stands, which did not affect the growth of trees. In the sample plots, No.2, 3, 5, 7, the differentiation within stands was quite obvious, indicating that we should take some forest management and tending measures. The mean values of uniform angle index in nine sample plots ranged from 0.50 to 0.60, which showed an aggregation distribution pattern. In the mixed forests, the average mingling degree were low, suggesting a less-mixed degree. According to spatial structures and different management purposes of the stands, we can take reasonable measures for forest management.
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