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在进行群落结构调查之前,通常是先做一个最小面积的调查,把能够反映群落基本特征,包含群落绝大多数物种的最小样方面积称作最小面积。最小面积的调查方法是采取逐渐增减面积了解物种变化规律的方法,即作巢法。温带森林群落最小面积一般为20 m×20 m。通过作巢法所得的数据再运用群落系统—面积曲线的方法,可更多地获取种类组成及群落结构随面积而变化的信息,其所确定的最小面积也能够真实地反映整个群落种类组成及结构的特征。
Before conducting a community structure survey, a minimum area survey is usually conducted. The area of the smallest sample that reflects the basic features of the community and contains the vast majority of species in the community is referred to as the minimum area. The smallest area of the survey method is to gradually increase and decrease the area to understand the law of species changes, that is, as the nest method. The minimum area of temperate forest community is generally 20 m × 20 m. By using the data obtained from the nested method and then using the community-area curve method, more information about the species composition and community structure with area can be obtained. The minimum area determined by the method can also truly reflect the species composition of the whole community and Structural features.