期刊文献+

长江流域鱼类多样性与流域特性关系分析 被引量:8

Analysis on the relationship between fish diversity and watershed features in the Yangtze River Basin
原文传递
导出
摘要 鱼类多样性是反映流域水生态系统的关键指标。该文基于鱼类多样性分析了影响长江流域水生态系统的主要因素。采用相关分析和灰色关联分析识别了影响鱼类多样性的主要因素。进一步通过多元线性回归建立了鱼类多样性与流域特性之间的定量关系。结果表明:影响长江上游干支流鱼类多样性的主要因素是海拔和流域面积等自然因素,除了通天河、金沙江上段、雅砻江等海拔3 500m以上的流域之外,其他上游干支流的主要影响因素是径流量。中下游鱼类多样性的主要影响因素从自然因素转变为土地利用类型,反映出人类活动对水生态系统的影响逐渐增强。 Fish diversity is a key indicator of the quality of a river water ecosystem.This study used the fish diversity to analyze the main factors influencing the Yangtze River water ecosystem.A correlation analysis and a gray correlation analysis were used to identify the main factors influencing the fish diversity. A quantitative relationship between the fish diversity and the watershed features was developed using a multiple variable regression.The results show that the main factors influencing the fish diversity in the mainstream and its tributaries in the upper reaches of the Yangtze River are natural factors such as elevation and basin area.Runoff is the main factor influencing the mainstream and its tributaries in the upper reaches except Tongtian,the upper part of Jinsha River and the Yalong River with altitude exceeding 3 500 m.The main factor influencing the fish diversity in the middle and lower reaches is land use types.The transition of the key factors from natural factors to land use types reflects the increasing influence of human activities on the river water ecosystem.
作者 石睿杰 唐莉华 高广东 杨大文 徐翔宇 SHI Ruijie;TANG Lihua;GAO Guangdong;YANG Dawen;XU Xiangyu(Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,China;Hydrology Bureau of Liaocheng,Shandong,Liaocheng 252000,China;China Renewable Energy Engineering Institute of the Ministry of Water Resources,Beijing 100120,China)
出处 《清华大学学报(自然科学版)》 EI CAS CSCD 北大核心 2018年第7期650-657,共8页 Journal of Tsinghua University(Science and Technology)
基金 国家自然科学基金委国际(地区)合作与交流项目(41661144031) 国家重点研发计划(2016YFC04303)
关键词 水生态 鱼类多样性 流域特性 多元逐步回归 灰色关联分析 river water ecosystem fish diversity watershed features multiple stepwise regression gray correlation analysis
  • 相关文献

参考文献15

二级参考文献150

共引文献493

同被引文献138

引证文献8

二级引证文献78

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部