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阐述了松嫩沙地的自然概况，土地沙漠化的成因、危害及其基本特征，提出了治理、开发应遵循的基本原则和途径。
The natural profile of Songnen Sandy Land, the causes, harms and basic characteristics of land desertification are expounded. The basic principles and approaches that should be followed in harnessing and developing are put forward.