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洞庭湖是一吞吐长江、接纳四水的过水性湖泊,平均每年有1亿多 m~3的泥沙沉积湖底,湖容量逐年减少,洲土面积逐年增加。洞庭湖现有冬陆夏水型滩地面积300多万亩,已开发利用的芦苇面积110多万亩,滩地土壤为江河冲积物沉积而成的潮土,土层深厚,结构良好,肥力高。洞庭湖地处中亚热带北缘,光、热、水资源丰富,为喜温暖湿润、需水量大的南方型黑杨的速生丰产,提供了十分良好的自然条件。
Dongting Lake is a transoceanic lake that takes in the Yangtze River and receives four streams of water. On average, there are over 100 million m ~ 3 sediment-laden lake bottoms each year. The lake capacity is decreasing year by year, and the area of terra cotta is increasing year by year. Dongting Lake now has more than 3 million mu of winter-land and summer-water beach area, and more than 1.1 million mu of reed has been exploited and utilized. The beach soil is alluvial sediment formed by rivers and alluvial deposits, with deep soil layers, good structure and high fertility. Dongting Lake is located in the northern margin of the Central Asia tropical, light, heat, rich in water resources for the hi warm and humid, large water demand of southern poplar fast-growing, provides a very good natural conditions.