Study on Structure of Casuarina equisetifolia Plantation Stands in the Nandu River Basin

Abstract

Abstract: This paper analyzed the characteristics and rules of the Casuarina equisetifolia plantation stands structure in the Nandu River basin in Hainan Province,used Weibull distribution and normal distribution in diameter and height fitting and was combined with χ² fitting results for examination. The results showed that the average DBH of Casuarina equisetifolia plantation stands was 11.6cm,the span of diameter class ranked 3.4 to 21.3cm,the average of tree height was 13.6 and ranked 5.2～23.5m;fitting results of two distribution functions showed high fitting accuracy,and the fitting precision of the Weibull distribution were slightly better than the Normal distribution; undergrowth vegetation composition in Casuarina equisetifolia plantation stands was simple with low biodiversity,and the growth in herbaceous layer was more vigorous than shrub layer.

Key words: Casuarina equisetifolia, stand structure, Weibull distribution, normal function, species diversity

CLC Number:

S718.5

WU Jiang, LI Xiangyang, SHE Jiyun, LU Yu, MENG Wei, WEI Fu. Study on Structure of Casuarina equisetifolia Plantation Stands in the Nandu River Basin[J]. FOREST RESOURCES WANAGEMENT, 2013, 0(4): 27-32.

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