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以河北省平山县卸甲河流域作为个例研究，划分了８个土地系统。在研究了各土地系统土地利用类型结构的基础之上，进一步比较了它们之间植物群系（林）的分布：植物种数量，乔木、灌木及草本植物状况，以及植物群系的组成结构。各土地系统之间差别很大。研究说明，封山育林、植树造林恢复植被，以及保护天然林，是保护生物多样性唯一有效的办法。另一方面，也说明生态土地分类注意人类影响程度和土地利用，更加易于和土地分类规划相结合
Taking Dumping River Basin in Pingshan County, Hebei Province as a case study, 8 land systems were divided. Based on the study of the land use type structure of each land system, the distribution of the flora (forest) between them was further compared: the number of plant species, the status of trees, shrubs and herbs, and the compositional structure of the flora. The land system varies greatly. The research shows that closing off hillsides for afforestation, afforestation and afforestation and the protection of natural forests are the only effective ways to protect biodiversity. On the other hand, it also shows that the classification of ecological land pay attention to the degree of human impact and land use more easily combined with the land classification plan