中国地理科学 ›› 2017, Vol. 27 ›› Issue (2): 248-258.doi: 10.1007/s11769-016-0840-z

• 论文 • 上一篇    下一篇

Effect of Water Level Fluctuations on Wintering Goose Abundance in Poyang Lake Wetlands of China

XIA Shaoxia1,2, LIU Yu1, CHEN Bin3, JIA Yifei1, ZHANG Huan1,2, LIU Guanhua4, YU Xiubo1,2   

  1. 1. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. The Second Surveying and Mapping Institute of Zhejiang Province, Hangzhou 310012, China;
    4. Jiangxi Poyang Lake National Nature Reserve Authority, Nanchang 330038, China
  • 收稿日期:2016-03-17 修回日期:2016-05-15 出版日期:2017-04-27 发布日期:2017-03-07
  • 通讯作者: YU Xiubo.E-mail:yuxb@igsnrr.ac.cn E-mail:yuxb@igsnrr.ac.cn
  • 基金资助:

    Under the auspices of National Natural Science Foundation of China (No.41171030, 41471088)

Effect of Water Level Fluctuations on Wintering Goose Abundance in Poyang Lake Wetlands of China

XIA Shaoxia1,2, LIU Yu1, CHEN Bin3, JIA Yifei1, ZHANG Huan1,2, LIU Guanhua4, YU Xiubo1,2   

  1. 1. Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. The Second Surveying and Mapping Institute of Zhejiang Province, Hangzhou 310012, China;
    4. Jiangxi Poyang Lake National Nature Reserve Authority, Nanchang 330038, China
  • Received:2016-03-17 Revised:2016-05-15 Online:2017-04-27 Published:2017-03-07
  • Contact: 10.1007/s11769-016-0840-z E-mail:yuxb@igsnrr.ac.cn
  • Supported by:

    Under the auspices of National Natural Science Foundation of China (No.41171030, 41471088)

摘要:

The Poyang Lake is a Ramsar site and is the important over-wintering site for migratory waterbirds along the East Asian-Australasian Fly way. Examining the effects of water level fluctuations on waterbird abundance and analyzing the influencing mechanism is critical to waterbird protection in the context of hydrological alteration. In this study, the effect of water level regime on wintering goose abundance was examined and the influencing mechanism was interpreted. Synchronous waterbirds survey data, hydrological data, Moderate Resolution Imaging Spectroradiometer-Normalized Difference Vegetation Index (MODIS-NDVI) data and habitat data derived from Landsat TM/ETM data and HJ/CCD data were combined. The satellite-derived Green Wave Index (GWI) based on MODIS-NDVI dataset was applied to detect changes in goose food resources. It was found that habitat size and vegetation conditions are key factors determining goose abundance. Geese numbers were positively correlated with habitat area, while intermediate range of vegetation productivity might benefit the goose abundance. Water level affects goose abundance by changing available habitat areas and vegetation conditions. We suggested that matching hydrological regime and exposed meadows time to wintering geese dynamics was crucial in the Poyang Lake wetlands. Our study could provide sound scientific information for hydrological management in the context of waterbird conservation.

关键词: water level fluctuation, wintering geese, Normalized Difference Vegetation Index (NDVI), Green Wave Index (GWI), wa-terbird habitat

Abstract:

The Poyang Lake is a Ramsar site and is the important over-wintering site for migratory waterbirds along the East Asian-Australasian Fly way. Examining the effects of water level fluctuations on waterbird abundance and analyzing the influencing mechanism is critical to waterbird protection in the context of hydrological alteration. In this study, the effect of water level regime on wintering goose abundance was examined and the influencing mechanism was interpreted. Synchronous waterbirds survey data, hydrological data, Moderate Resolution Imaging Spectroradiometer-Normalized Difference Vegetation Index (MODIS-NDVI) data and habitat data derived from Landsat TM/ETM data and HJ/CCD data were combined. The satellite-derived Green Wave Index (GWI) based on MODIS-NDVI dataset was applied to detect changes in goose food resources. It was found that habitat size and vegetation conditions are key factors determining goose abundance. Geese numbers were positively correlated with habitat area, while intermediate range of vegetation productivity might benefit the goose abundance. Water level affects goose abundance by changing available habitat areas and vegetation conditions. We suggested that matching hydrological regime and exposed meadows time to wintering geese dynamics was crucial in the Poyang Lake wetlands. Our study could provide sound scientific information for hydrological management in the context of waterbird conservation.

Key words: water level fluctuation, wintering geese, Normalized Difference Vegetation Index (NDVI), Green Wave Index (GWI), wa-terbird habitat