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松花湖是我国较大的人工湖泊,为丰满电站的库区,建成于1943年,担负着发电、灌溉和防洪任务。自开始运行至今40年来,由于湖区人类生产活动的影响,已使自然生态发生了变化,水土资源遭到了一定的破坏,水土流失危害也逐渐加剧起来。为了了解和探讨这里的侵蚀程度、泥沙来源和防治途径,我们于1981年进行了松花湖区水土流失综合考察。考察采取深入重点,访问座谈,实地踏查,选点测验,解剖典型和分析资料等方法进行。现将考察结果分述如下。
Songhua Lake is a large artificial lake in China. It is a reservoir area of Fengman Hydropower Station. Built in 1943, Songhua Lake is responsible for power generation, irrigation and flood control tasks. Since its inception 40 years ago, due to the influence of human activities in the lake area, the natural ecology has undergone a change, soil and water resources have been destroyed to some extent, and the harm of soil and water loss has also been gradually aggravated. In order to understand and explore the erosion level here, the sources of sediment and the ways of prevention and control, we conducted a comprehensive investigation of soil and water loss in Songhua Lake in 1981. Investigation to take in-depth focus, interview, on-the-spot investigation, the election point test, anatomy and analysis of typical data methods. Now the findings are described below.