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山西芦芽山14种常见灌木生物量模型及生物量分配
Authors
方精云
罗永开
胡会峰
Publication date
1 January 2017
Publisher
Abstract
灌木生物量模型是估算灌木生物量的重要方法,而灌木生物量在各器官间的分配是其适应周围环境的重要体现。基于对山西芦芽山地区14种常见灌木的各器官(根、茎和叶)、地上和总生物量,以及基径、树高、冠幅的测定,建立了各器官、地上及总生物量的最优估算模型,探究了各器官生物量与总生物量(如叶质比、茎质比及根质比)及地上-地下生物量(根冠比)的关系。结果表明:(1)总体而言,幂函数和线性函数对这些灌木生物量的估测效果较好。(2)生长低矮、分枝数多的灌木种采用冠幅面积估测生物量效果较好;生长直立或分枝数少的灌木种采用总基径的平方与茎干高度乘积估测生物量效果较好;其他介于两者之间的灌木种采用冠幅体积估测生物量效果较好。(3)14种灌木的平均根冠比是0.61,叶质比0.17,茎质比0.48,根质比0.35;此外,带刺灌木种除叶质比显著大于不带刺灌木种外,茎质比、根质比和根冠比都显著小于不带刺灌木种
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of Botany,Chinese Academy Of Sciences
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Last time updated on 09/06/2022