| 长江上游径流演变对中下游地区水生生物影响研究 | |
| 赵铜铁钢 ; 严登华 ; 蒋云钟 ; 王浩 ; ZHAO Steel ; YAN Deng-hua ; JIANG Yun-zhong ; WANG Hao | |
| 2010-06-10 ; 2010-06-10 | |
| 关键词 | 天然径流演变 主成分分析 回归分析 the natural flow regime principal component analysis regression analysis. P333.1 |
| 其他题名 | Ecological Impact of Natural Flow Regime in Upper Yangtze River to Midstream Aquatic Ecosystem |
| 中文摘要 | 通过天然径流演变对河流生态系统和生态条件进行定量分析是目前河流生态学领域的重要研究手段之一。本研究采用长江宜昌站1978年-1991年实测日径流资料,从中提取径流演变统计特征量,利用主成分分析方法对统计特征量进行降维,通过对流量机制特征量主成分与长江中下游各省水产业总产量及其增长率的回归分析,发现:径流演变特征值与水产业总产量之间显著相关,径流演变特征值与水产业增长率存在显著的滞后性相关关系。研究结果表明:长江上游径流演变对于中下游河流生态系统的维持和发展有重要意义。; The natural flow regime is frequently used in river ecology studies as to quantitatively analyze and access the ecological conditions of rivers. Based on flow records of Yichang gauge station between 1978-1991 and the yearly yielding data of aquatic product industries in Jiangxi,Hubei,Hunan between 1978-1995,this research has studied the relationship between the natural flow regime in Upper Yangtze River and the midstream ecosystem of Yangtze River by Principal Component Analysis (PCA) and Regression Analysis (RA). The results show,in the Yangtze River,the upstream natural flow regime gets a statistically significant correlation with the total yields and increasing-rates of the midstream aquatic product industries. As to increasing-rates,the relationship shows time-lag properties. This research denotes the importance of upper Yangtze River flow regime to midstream and lower stream aquatic ecosystems.; “十一五”国家科技支撑计划资助项目(2008BAB29B08); 国家自然科学基金创新研究群体基金项目(50721006) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/60458]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 赵铜铁钢,严登华,蒋云钟,等. 长江上游径流演变对中下游地区水生生物影响研究[J],2010, 2010. |
| APA | 赵铜铁钢.,严登华.,蒋云钟.,王浩.,ZHAO Steel.,...&WANG Hao.(2010).长江上游径流演变对中下游地区水生生物影响研究.. |
| MLA | 赵铜铁钢,et al."长江上游径流演变对中下游地区水生生物影响研究".(2010). |
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