Zhalong national nature reserve is located in WuYuErHe downstream,from heilongjiang province northwest JiJiHaErShi 30 kilometers,the area of 210000 hectares.Reserve WuYuErHe downstream river basin by a large permanent seasonal fresh water swamps and countless small shallow lake,the wetland of the grass,and farmland is around and artificial fish ponds,the main protection for the rare red-crowned cranes and object and wetland ecological system,is China northern latitude in the region with the best preserved,the primal,open wetland ecological system.Every year of crane consists of six in the breeding and all,of the world of kinds of 40%,crane reserve and lakes and swamps,river wetland ecological dotted,keep good.