【摘要】 在采用大样本抽样，对树木生活叶和凋落叶的单位面积干重和养分含量测定的基础上，就21个树种的养分内循环问题进行了初步研究，同时讨论了树木养分内循环的生物学意义及其影响因素，为研究树木及森林生态系统养分运移规律提供依据．更多还原

【Abstract】 On the basis of determination the dry masses per unit area and nutrient content of living and fallen leaves in great samples, the nutrients inter-cycling of 21 tree species have been studied initially. At same time, the biological significance and influencing factors have also been discussed. This will be a foundation for the study of nutrients transportation in trees or forest ecosystem.更多还原