栖息地
湿地
漫滩
归一化差异植被指数
航程(航空)
食草动物
分水岭
环境科学
生态学
植被(病理学)
水文学(农业)
地理
自然地理学
气候变化
生物
地质学
机器学习
病理
复合材料
岩土工程
材料科学
医学
计算机科学
作者
Jiakun Teng,Shaoxia Xia,Haibao Duan,Li Yu,Xiubo Yu,Wenjuan Yang
摘要
The hydrological rhythm of floodplain wetlands affected by natural climate variability and human activities is the driving factor affecting the distribution of herbivorous geese habitats. It has always been challenging to determine its long-term variation, due to the lack of data on species distribution and broad wetland observation. In this study, the key normalized difference vegetation index (NDVI) threshold range suitable for herbivorous geese, greater white-fronted geese (Anser albifrons, GWG) and bean geese (Anser fabalis, BG), was discovered by combining GPS tracking data with Landsat satellite data. The suitable habitat area and distribution variation characteristics of GWG and BG from 1982 to 2020 were extracted based on the threshold range. The results showed that the suitable habitat area had a declining trend after 2003, that the distribution had moved toward the lake's center, and that its average elevation had decreased by around 1 m, particularly during the arrival period. The change of herbivorous geese habitat is caused by the continuous drying of Poyang Lake. The study can offer a rational scientific foundation for wetland waterbird protection and watershed hydrological management. This article is protected by copyright. All rights reserved.
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