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对原始林云杉枯死与森林病害关系的研究表明：云杉成片枯死的直接诱因是生态条件恶化、林地大量积水形成沼泽，致使根部缺氧，根呼吸受阻。
The research on the relationship between the dead and the forest diseases of the original forest spruce showed that: the direct cause of the dead spruce is the deterioration of ecological conditions, a large number of forest water swamp formation, resulting in root hypoxia, root respiration blocked.