摘要
Holdridge的生命地带分类系统由于其指标的计算十分简便与对植被的对应性强而受到国际植被生态学界与环境科学研究者的重视。特别是近年来在环境的评价、生态区划与预测全球变化对生态系统的影响等方面得到较多采用。该系统对中国各植被地带的气候台站资料进行计算分析的结果表明有较好的适应性。但由于该系统发展于中美洲的热带地区,因而在中国的亚热带地区须进行局部的调整。但采用该系统将有利于与世界各地的气候一植被分类系统的统一与对比研究。通过回归计算表明,该系统的可能蒸散率(PER)指标与CHIKUGO模型的辐射干燥度(RDI)显著相关。因而可以采用便于取得资料与易于计算的PER来进行潜在第一性生产力(NPP)的估算。对中国各植被地带的计算结果令人满意,可进一步用于在全球变化条件下,中国各植被地带或生态系统主要类型及其NPP变化的预测。
Holdridge's Life zone classification system is highly evaluated by international circles of ecolgy and environmental sciences owing to its simple and convenient for calculation and better correspondence with vegetation types. Recently it has been especially applied to assess environment, engage in ecological regionalization, predict the impact of global change upon ecosystems, etc. The result of analysis of climatological date for vegetation zones in China by means of Holdridge's system also shows a significant correspondence.But, because it was developed in the tropical zone of Central America, an adjustment in China's subtropical zone is needed. Nevertheless, the application of that system should be beneficiate for unification and comparative study of the climate-vegetation interaction in the world. The regression analysis shows a significant correlation between Holdridge's potential evapotranspiration rate (PER) and radiative dryness index (RDI) of Chikugo Model. Therefore, PER could be used to estimate Net Primary Productivity (NPP).Its result of calculation for vegetation zones in China is satisfied and could be used to predict the change in vegetation zones, main types of ecosystems, and NPP in China.
基金
中国科学院植物研究所植被数量生态学开放实验室支持的课题
