青藏高原斑头雁迁徙通道的环境特征  

Environment characteristics of bar-headed goose (Anser indicus) migration channel in Qinghai-Tibet Plateau

作　　者：郝美玉[1] 张耀南[2] 阎保平[1] 雷富民[3] 

机构地区：[1]中国科学院计算机网络信息中心,北京100190 [2]中国科学院寒区旱区环境与工程研究所,兰州730000 [3]中国科学院动物研究所,北京100101

出　　处：《干旱区资源与环境》2013年第11期129-134,共6页Journal of Arid Land Resources and Environment

基　　金：发改委项目中示范应用:青海湖国家级自然保护区生态系统与野生动物保护的监测示范应用(CNGI-KY2010-08-02)资助

摘　　要：从斑头雁在青藏高原具有相对固定迁徙规律的事实出发,分析高原环境特征在斑头雁迁徙中的作用。以斑头雁高原迁徙通道为研究区,采用叠加与统计分析,对斑头雁迁徙停留地气温、降雨和植被覆盖变化以及各因子之间的相关性进行了分析。研究表明:青藏高原上斑头雁沿比较固定通道迁徙的主要原因是气温的季节变化和植被的独特分布格局;迁徙通道内植被与气象站点的气温、降水有着明显的相关性,其中NDVI与降水相关性明显高于与气温的相关性;在以高山植被、草原、草甸和灌丛四种植被为主的迁徙通道中,草甸是主要的植被类型,而草原受气温及降水的影响最大,高山植被受其影响最小。Qinhai-Tibet Plateau is the breeding and wintering stopever site for bar-headed geese in their migratory channel.This research investigated what really may be the reasons for bar-headed geese migration in the channel,how about environment characteristics of the migration channel and the relationship among the habitat factors.The characteristics of the response of NDVI to climatic factors（temperature and precipitation） at the meteorological stations were assessed using the methods of overlay analysis and statistical analysis.The results showed that the routes themselves,though,were relatively stable,probably because of the general stability of seasonal temperature variations and the unique vegetation distribution.NDVI was significantly correlated with temperature and precipitation,and the correlation between NDVI and precipitation was more closer than the correlation between NDVI and temperature.There are four vegetation types in the channel which is alpine vegetation,steppe,meadow and shrub,and meadow is the primary vegetation type.The partial correlation analysis and multiple correlation analysis between NDVI of different vegetation types and temperature and precipitation illustrated that steppe was highly influenced by temperature and precipitation,but alpine vegetation was lowly influenced by them.

关 键 词：环境 迁徙通道 叠加与统计分析 迁徙原因 斑头雁 

分 类 号：Q958[生物学—动物学]