水生植物清理工程对越冬鸟类种群的影响

Influence of Cleaning Aquatic Plants on Wintering Birds

为了给越冬鸟类营造适宜的栖息环境,泗洪洪泽湖湿地国家级自然保护区对核心区水生植物进行了清理,并对清理前后区域内水质、水生植物数量、种类以及鸟类数量、种类进行了调查。结果显示:水生植物清理前,研究区仅观察到约30只越冬鸟类,且均为绿头鸭;水生植物清理后,调查到7种鸟类,隶属2个目2个科,约有9 000只,其中数量最多的为绿头鸭Anser platyrhynchos,隶属雁形目鸭科,其次为白骨顶Fulia atra,隶属于鹤形目秧鸡科。在调查过程中还发现了国家稀有物种震旦鸦雀Paradoxornis heudei。

In order to create a suitable habitat for wintering birds, the District Administration Offi ce of Hongze Lake Wetland National Nature Reserve in Sihong removed aquatic plants from the core area of Hongze Lake wetland from November 1st to November 5th, 2013. The basic water parameters, amount of aquatic plants and watering birds were investigated before and after removing aquatic plants. The results showed that removal of aquatic plants played an important role in enlarging population of wintering birds. Before the removal of aquatic plants, there were only about 30 wintering birds in the study area, and all of them were Anser platyrhynchos. However, about 9000 wintering birds, belonging to two orders two families were found after the removal. Anser platyrhynchos was the species with the largest number, and followed by Fulia atra. Paradoxornis heudei a rare species in China was also found in this survey.