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海南岛尖峰岭次生热带山地雨林的边缘效应

, PP. 693-699

Keywords: 热带山地雨林,次生林,边缘效应,模型,海南岛

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Abstract:

对海南岛尖峰岭热带山地雨林采伐迹地次生林及周围的保留林进行了群落调查,组建了一个基于分割线段模型的边缘效应测度公式:Y=a+e0[1-(D.Dmax)](式中:Y为与边缘垂直距离D处的测定指标值,e0为边缘效应强度的最大值,Dmax为边缘效应作用的最大距离,a为常数),研究了热带山地雨林群落的边缘效应,结果表明:(1)用组建的测度公式来分析热带山地雨林采伐迹地边缘的次生林及保留林的边缘效应强度及其作用距离,结果是有效和可靠的;(2)热带山地雨林采伐后形成的边缘,其效应的作用距离一般都不超过15m;(3)边缘对保留林和次生林的效应没有显著差异。

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