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东北国营林业的过量采伐,资源面临枯竭的危机,已引起各方面的关注。1985年东北三省又遭受严重水灾,据统计,直接经济损失达100亿元。水灾的原因,主要是大气环流造成的雨量集中和台风的袭击,以及水利工程的防御能力不足;另一个原因是森林植被的破坏,程度不同的失去了涵养水源、调节径流和防洪防涝的功能,加剧了洪水下泄和山洪暴发,造成了严重自然灾害。一、对东北森林作用的再认识自古以来,东北森林茂密,布满各主要山区和丘陵岗地,特别是长白山、老爷岭、张广才岭、完达山以及大小兴安岭,还有西部的松岭和努鲁尔虎山脉,对东北地区形成一个环形的森林
Over-harvesting of state-owned forestry in northeast China and the crisis of depleting resources have drawn all kinds of concerns. In 1985, the three northeastern provinces suffered another severe flood disaster. According to statistics, the direct economic loss has reached 10 billion yuan. The causes of the floods are mainly the concentration of rainfall and the typhoon attack caused by the atmospheric circulation, and the lack of defensive capacity of water conservancy projects. Another reason is the destruction of forest vegetation and the loss of functions of water conservation, flood regulation and waterlogging control to varying degrees , Exacerbated the floods and flash floods, causing serious natural disasters. First, the re-understanding of the role of the Northeast forests Since ancient times, the Northeast lush forests, covered with all major mountainous and hilly sites, especially Changbai Mountain, Laoyeling, Zhang Guangcai, Wandashan and Hinggan Mountains, and western Songling and Nu Ruhr Tiger Mountains, the northeast region to form a ring of forest