’98松嫩洪灾成因与减灾对策

CAUSE AND ITS CONTROL COUNTERMEASURE FOR THE FLOOD IN 1998 IN NENJIANG SONGHUAJIANG VALLEY

本文科学地分析了松嫩洪灾成因、特征，认为主要原因是：（１）多年未遇的强降雨；（２）上游森林破坏，水土流失；（３）中游湿地围垦、退化，洪水调蓄能力降低；（４）下游河床顶托；（５）水利工程太少。并由此提出一整套减灾防灾对策。

The stormwater and flood disaster stroke the Nenjiang Songhuajiang valley from June to August in 1998 and caused 3000 billion RMB Yuan loss,many towns and villages were deconstructed,bridges broken up,Thousands of kilometers of farmland were submerged.This paper analysed the causes and put up some countermeasure for that flood in Nenjiang Songhuajiang valley.The results show that the key factor the high rainfall and the ecological environmental destruction and the lack of determined water conservancy engineering are the most important cause.In the last the contributor provided some suggestion on the control for the flood in Nenjiang Songhuajiang valley correspondingly and get to the way of sustainable development.