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中文摘要：
为了研究扎龙自然保护区水资源状况的变化对湿地重要水禽的影响，2003年春季，对保护区范围内的水禽进行了调查，重点对丹顶鹤和白枕鹤的营巢状况进行了研究，结合以往的调查数据，分析了重要水禽的变化情况及原因．结果表明：扎龙湿地实施补水后，重要水禽的数量逐年增多；丹顶鹤的迁徙期主要集中在4月中上旬，最大迁徙种群个体数为152只；白枕鹤迁徙期集中在4月中下旬，最大种群个体数为48只．补水后，重要水禽的数量明显高于补水前（1996年）的种群数量．说明湿地水资源的恢复有效改善了水禽的生境质量．
英文摘要：
A censes had been conducted on the waterfowl in Zhalong National Nature Reserve for the purpose of studying the effect of water condition on rare water fowl in 2003. This study mainly concentrates on the survey of Red - crowned crane and White Napped crane nesting. The results show that the number of rare waterfowl increases greatly year by year after the program of water supply was put in practice in 2001. In breeding period 78 nests were located with GPS. In migratory period, the largest group of Red - crowned crane in one day is 152, and most migrate in the first and middle ten days of April; the largest group of White- napped cranes in 48 ,most migrate in the middle and last ten days of April. After the water supply from Nenjiang River, the number of rare waterfowl is larger than that in 1996 （before the program）,which means that the restoration of water resource improved the wetland environment and habitat quality greatly.
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