土壤形成受生物气候条件的影响,因此土壤具有地带性分布规律。过去认为一个生物气候带只有一个地带性土类。例如,暖温带落叶阔叶林地带只有棕壤,中亚热带常绿阔叶林地带只有红壤。土壤是一个复杂的自然体,单纯根据生物气候带来确定地带性土类的方法,不可能正确反映客观实际。它不符合以形成条件、形成过程和土壤属性三结合的方法来研究土 Soil formation is affected by the bioclimatic conditions, so the soil has zonal distribution. In the past, there was only one zonal soil in a bioclimatic zone. For example, only brown earth in warm temperate deciduous broadleaf forest and only red soil in mid-subtropical evergreen broad-leaved forest. Soil is a complex natural body. It is impossible to correctly reflect the objective reality by simply determining the zonal soil according to the biological climate. It does not conform to the method of forming conditions, forming processes and soil properties to study the soil