Estimation of ecological water demand in Sanmenxia reservoir wetland
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Abstract:
Based on the hy drolog ical and meteoro lo gical data in 2005 and remot e sensing image interpretation o f fo ur t ime periods ( Febr uar y, June, Aug ust , and Nov ember ) in 2005 in Sanmenxia r eservo ir, var iation o f ecolog ical w ater demand in the w etland in 2005 w as est imated accor ding to the classificat ion of w etlands, and var iation law s o f ecolo gica l w ater demand in differ ent types of w et lands w ere analy zed. The results show ed that the minimum eco lo gical water demand is 81 364 billio n m3 , the suitable eco2 log ical water demand is 141 407 billion m3 , and the ideal ecolog ical w ater demand is 301 45 billion m3 .Water demand for sediment transpo rt is the most impo rtant one of ecolog ical w ater demand, and w ater demand for sediment tr anspor t w as concentr ated in the floo d seaso n fr om June to October w ith the max imum in August o f 21 527 billion m3 . Calculatio n o f ecolog ical w ater demand in the w etland can pro vide basic database fo r ecolog ical water allocatio n and ecological restoration in Sanmenx ia reservo ir wetland
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