洞庭湖区是以湖盆为中心的河湖平原,总面积约15200平方公里,其中自然水面近2800平方公里,堤烷区10220余平方公里。烷内耕地870万亩,其中水稻土666万亩,占耕地的76.6%,是我国的重要商品粮基地之一。为了进一步弄清这一地区的土壤资源,我们对该区土壤的形成条件、主要土壤类型及? Dongting Lake area is a lake-centered plains of rivers and lakes, with a total area of ​​about 15200 square kilometers, of which nearly 2800 square kilometers of natural water, embankment area of ​​10220 square kilometers. Almost 8,700,000 hectares of arable land are harvested, of which 666 million are paddy soils, accounting for 76.6% of the arable land. It is one of the important commodity grain bases in China. In order to further understand the soil resources in this area, we have discussed the formation conditions of the soil, the main types of soils and the soil types in this area.