摘要
鄱阳湖是国际重要的水鸟越冬地,拥有丰富的鸟类资源。近些年鄱阳湖出现了一系列生态环境问题,可能导致鸟类多样性和群落结构发生变化。本研究于2014/2015~2017/2018越冬季调查鄱阳湖9个子湖的越冬水鸟种类和数量,旨在掌握鸟类资源的变化情况,评估鄱阳湖生态系统的健康状况。4个越冬季,鸟类物种数变化不大,个体数在2015/2016最低。食鱼集团的数量呈现增长趋势,其可能原因是集团内主要物种的数量增加,以及保护措施的实施。食草集团的数量也呈现增长的趋势,这可能与洲滩植被面积增加有关。食种子集团和食块茎集团的数量逐渐减少,表明鄱阳湖的水生植被逐步退化,生态环境质量恶化。对此,建议加强研究,找出鄱阳湖水生植被退化的驱动因子,以便采取措施,进行水生植被恢复,为依赖于水生植物生存的生物提供食物和栖息环境。
Poyang Lake is an important international wintering ground for waterbirds.In recent years,a series of problems have occurred at Poyang Lake,potentially threatening the waterbird diversity and community composition.In this study,we investigated waterbird richness and abundance at nine sub-lakes of Poyang Lake in the wintering periods of 2014/2015-2017/2018.We aimed to explore the change of waterbird diversity,and assess the health of Poyang Lake ecosystem.During the four wintering periods,waterbird richness kept stable,while abundance was lowest in the wintering period of 2015/2016.Different waterbird guilds showed different population dynamics.The number of fish eaters increased,possibly due to the increase of the major species within the guild and the implementation of conservation measures.The number of sedge eaters also increased,possibly owing to the expansion of grassland.The number of seed eaters and tuber eaters decreased gradually,indicating the degradation of aquatic vegetation and ecological environment.It is urgent to find out the main driver of the degradation of aquatic vegetation so that measures can be taken to recover it.
作者
王亚芳
侯谨谨
欧阳珊
王文娟
WANG Yafang; HOU Jinjin; OUYANG Shan; WANG Wenjuan;;4(Center for Watershed Ecology,Institute of Life Science and School of Life Science;School of Life Science;Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University, Nanchang 330031 China ; National Ecosystem Research Station of Jiangxi Poyang Lake Wetland,Nanchang 330038,China)
出处
《南昌大学学报（理科版）》
CAS
北大核心
2018年第3期258-262,共5页
Journal of Nanchang University(Natural Science)
基金
国家自然科学基金资助项目(31772480
31401969)
关键词
鄱阳湖
取食集团
水生植物
越冬水鸟
Poyang Lake
foraging guild
aquatic vegetation
wintering waterbirds
