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四川省垫江县地处川东平行岭谷地区,气候属中亚热带湿润气候类型,植被为亚热带常绿阔叶林类型,主要岩层在丘陵宽谷中为紫色砂泥岩,在山岭中为灰色砂岩及灰岩,格状河流水系发育很好。该县土被结构的形成与这些自然因素紧密相关。垫江县土被结构分类系统按发生—几何特性原则,由土被结构类、土被结构型、单元土被结构组合、单元土被结构和单元土区组成。该县土被结构属黄壤类,包括三种土被结构型、十种单元土被结构组合、三十多种单元土被结构和单元土区。
Dianjiang County, Sichuan Province is located in the area parallel to the Ridge in eastern Sichuan Basin. The climate is subtropical humid climate. The vegetation is subtropical evergreen broadleaf forest. The main rock formations are purple sandstone and mudstone in the hilly valley and gray sandstone in the mountainous area. Limestone, latticed river system developed well. The formation of soil structure in this county is closely related to these natural factors. Dianjiang County soil structure classification system according to the occurrence - the principle of geometric characteristics, from the soil structure type, soil structure type, unit soil structure combination, unit soil structure and unit soil area. The soil structure of the county is yellow earth type, including three kinds of soil structure type, ten kinds of soil structure combination, thirty kinds of soil structure and unit soil area.