植被是生态系统的一个重要组成部分,而温带次生落叶阔叶林又是一个广泛分布的植被类型,对它们进行研究可以获得生态系统的有用信息。近年来,植物生态学在理论和方法上,都出现了新的动态。随着科学技术的高速发展,对植物群落的定性描述已远远不能满足研究的需要,当前人们已转向种群的定量分析和实验群落学的研究。为要研究群落的数量动态,必须在调查区域内抽样,于是,野外工作方法问题就显得十分重要。 Vegetation is an important part of the ecosystem. However, temperate secondary deciduous broad-leaved forests are a widely distributed type of vegetation. Studying them can obtain useful information about ecosystems. In recent years, plant ecology has emerged new trends in both theory and methodology. With the rapid development of science and technology, the qualitative description of plant communities can not meet the needs of the research. At present, people have turned to the quantitative analysis of population and the study of experimental community. In order to study the dynamics of the number of communities, sampling must be done within the survey area, so the issue of field work methods becomes very important.