大兴安岭地区自80年代开始,受气候反常的影响,7条主要江河洪涝灾害频繁,汛期来得早,结束得晚,成灾洪水出现的次数多。分析其主要原因为受气候变暖和温室效应;太阳活动行星起潮力和人类经济活动等的影响。预测90年代将有4次大洪水,初期2次,后期2次,1991年已出现一次,因此对未来可能出现的3次洪水,要特别重视。 Since the 1980s, the Daxinganling area has been affected by the climate anomalies. The floods and floods in the seven major rivers have been frequent. The flood season came earlier and ended later. There were many flood and flood disasters. Analysis of the main reasons for the impact of climate warming and the greenhouse effect; solar activity of tide and human economic activities. It is predicted that there will be four floods in the 1990s, the initial two and the late two, which occurred once in 1991, so special attention should be paid to the three floods that may occur in the future.