文献类型：期刊文献

中文题名：雷州半岛白骨壤种群直径分布规律

英文题名：The Preliminary Study on Avicennia Marina Diameter Distribution in Leizhou Peninsula

作者：曾群英[1];刘素青[1];黄剑坚[2];韩维栋[1];周圆满[1]

机构：[1]广东海洋大学农学院,广东湛江524088;[2]广东海洋大学寸金学院,广东湛江524094

年份：2014

期号：2

起止页码：93

中文期刊名：林业资源管理

外文期刊名：Forest Resources Management

收录：北大核心2011、北大核心

基金：广东省自然科学基金(S2012010008703;S2013020012779);广东省海洋渔业科技推广专项基金(A201008J02;2011011I02;A201201I02;A201308E01)

语种：中文

中文关键词：白骨壤;直径分布;雷州半岛

外文关键词：Avicennia marina, diameter distribution, Leizhou Peninsula

中文摘要：在林分生长模型研究中,选择描述林分直径分布的函数至关重要。以雷州半岛白骨壤种群为研究对象,对其开展直径调查,所得数据以偏度、峰度为指标,并运用正态分布、Weibull分布和Gamma分布等3种概率密度函数进行参数拟合检验,分析白骨壤种群的直径分布特征。研究结果表明:雷州半岛白骨壤种群以中小径阶居多,其偏度和峰度均大于0,直径分布曲线为左偏态,分布曲线比较陡峭,呈尖峰态;正态分布和Weibull分布的拟合效果较差,而Gamma分布则具有较好的拟合效果;通过建立Gamma分布参数预估方程,可预测林分各个径阶的株数及其动态变化。通过对雷州半岛白骨壤种群直径分布规律的调查研究,以期为雷州半岛白骨壤群落的经营管理以及利用提供一定的参考。

外文摘要：In the stand growth model, selection of the stand diameter distribution functions is crucial. In this paper the diameter of Avicennia Marina in Leizhou Peninsula was used as the research object. The resulting data skewness and kurtosis were used as indicators, and three kinds of probability density function parameters of normal distribution, Weibull distribution and Gamma distribution were used for fit testing and analysis of the Avicennia Marina diameter distribution characteristics. The results showed that the Avicennia marina population is distributed in small and midium diameters in Leizhou Peninsula and the skewness and kurtosis are greater than 0,diameter distribution curve is left skewness, distribution curve is steep, showing peak state. Normal distribution and Weibull distribution fitting effect is poor, and Gamma distribution is fitted with good results. Through the establishment of Gamma distribution parameter estimation equation each diameter class and its dynamics can bepredicted. The result provides reference for the management and utilization of Avicennia marina community in Leizhou Peninsula.