【摘要】：為了分析丹江口水庫建成投入運行以后對下游河道水文情勢的影響,利用黃家港站、襄陽站和皇莊站1961~2000年日平均流量資料,采用水文變化指標法(IHA)和變化范圍法(RVA),定量分析了丹江口水庫運用前后漢江中下游河道水文情勢變化及改變程度。結果表明,在5組IHA水文指標中,除年極端流量發(fā)生時間變化不大以外,其他各組水文指標值均發(fā)生了較顯著變化;黃家港站、襄陽站和皇莊站的整體水文改變度分別為中度、低度和中度改變,這對漢江中下游河道生態(tài)系統(tǒng)穩(wěn)定性和生物多樣性帶來不利影響。研究成果為丹江口水庫生態(tài)調度和漢江中下游河道生態(tài)修復提供了科學依據。
[Abstract]:In order to analyze the influence of Danjiangkou Reservoir on the hydrological situation of the lower reaches of the river after the completion and operation of Danjiangkou Reservoir, using the daily average flow data of Huangjiagang Station, Xiangyang Station and Huangzhuang Station from 1961 to 2000, the hydrological change index method (IHA) and the variation range method (RVA), were used to quantitatively analyze the hydrological situation and the degree of change in the middle and lower reaches of Hanjiang River before and after the operation of Danjiangkou Reservoir. The results showed that among the five groups of IHA hydrological indexes, except for the occurrence time of annual extreme flow, the hydrological index values of other groups changed significantly, and the overall hydrological changes of Huangjiagang station, Xiangyang station and Huangzhuang station were moderate, low and moderate, respectively, which had adverse effects on the stability and biodiversity of river ecosystem in the middle and lower reaches of Hanjiang River. The research results provide scientific basis for ecological operation of Danjiangkou Reservoir and ecological restoration of middle and lower reaches of Hanjiang River.
【作者單位】： 三峽大學水利與環(huán)境學院;水資源安全保障湖北省協(xié)同創(chuàng)新中心;南京水利科學研究院;長江水利委員會漢江水文水資源勘測局;
【基金】：國家自然科學基金項目(51479222,51509141) 湖北省自然科學基金項目(2012FFB03802)
【分類號】：TV697.21

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