【摘 要】
:
人类活动干扰下河流自然水势改变,导致鱼类栖息地环境变化。为准确分析影响鱼类分布的生态水文环境,该文以美国阿肯色河流域的国家级濒危小型鱼类:产漂流性卵鲤鱼(Arkansas R
【机 构】
:
中国农业大学现代精细农业系统集成研究教育部重点实验室,中国农业大学农业部农业信息获取技术重点实验室,U.S.GeologicalSurvey,DepartmentofBiosystemsandAgri
【基金项目】
:
Biotic and Abiotic Factors Related to Persistence of a Federally Threatened Cyprinid.(9488144384E10)
论文部分内容阅读
人类活动干扰下河流自然水势改变,导致鱼类栖息地环境变化。为准确分析影响鱼类分布的生态水文环境,该文以美国阿肯色河流域的国家级濒危小型鱼类:产漂流性卵鲤鱼(Arkansas River Shiner,Notropis girardi,ARS)为例,根据其繁殖期特有的水文条件需求,选取流域40个水文站点的日径流数据,分别计算历史时期(1950-1962年)和当前时期(1990-2010年)的3个繁殖期生态水文因子:高流量,较高流量历时及断流历时。每个生态水文因子分别结合其他25个环境因子,基于最大熵理论(Ma
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