南水北调与水利科技
南水北調與水利科技
남수북조여수리과기
SOUTH-TO-NORTH WATER
2014年
5期
96-99
,共4页
滹沱河%径流量%水环境%用水量
滹沱河%徑流量%水環境%用水量
호타하%경류량%수배경%용수량
H utuo River%runoff%w ater environment%w ater consumption
通过对滹沱河流域代表站河道非汛期实测径流分析可以发现，从20世纪50年代到21世纪初，径流量减少为原来的1/3左右。非汛期上游河道来水量的减少，是造成河流下游水环境恶化的根本原因。大规模人类活动使流域下垫面情况发生了变异，使近年来同量级年降水条件下，天然年径流减少超过四成，而同时用水量占来水量的比例却在逐年增加，导致下游河道常年断流干涸，水环境严重恶化。以南水北调中线建成供水为契机，重新确立水库调度中防洪、供水和下游河流水环境保护的关系，是恢复河流水环境的必要途径。
通過對滹沱河流域代錶站河道非汛期實測徑流分析可以髮現，從20世紀50年代到21世紀初，徑流量減少為原來的1/3左右。非汛期上遊河道來水量的減少，是造成河流下遊水環境噁化的根本原因。大規模人類活動使流域下墊麵情況髮生瞭變異，使近年來同量級年降水條件下，天然年徑流減少超過四成，而同時用水量佔來水量的比例卻在逐年增加，導緻下遊河道常年斷流榦涸，水環境嚴重噁化。以南水北調中線建成供水為契機，重新確立水庫調度中防洪、供水和下遊河流水環境保護的關繫，是恢複河流水環境的必要途徑。
통과대호타하류역대표참하도비신기실측경류분석가이발현，종20세기50년대도21세기초，경류량감소위원래적1/3좌우。비신기상유하도래수량적감소，시조성하류하유수배경악화적근본원인。대규모인류활동사류역하점면정황발생료변이，사근년래동량급년강수조건하，천연년경류감소초과사성，이동시용수량점래수량적비례각재축년증가，도치하유하도상년단류간학，수배경엄중악화。이남수북조중선건성공수위계궤，중신학립수고조도중방홍、공수화하유하류수배경보호적관계，시회복하류수배경적필요도경。
Based on the analysis of the runoff observations from t he representative stations during the non-flood season, runoff in the H utuo River in the early 2000s has decreased to one t hird of that in 1950s. The decreasing of the incoming w ater from the upstream during the non-flood season is the main reason causing the serious environmental deterioration in the low er reaches. Large-scale human activities have changed the underlying surface conditions of the H utuo River Basin. As a result, the natural annual runoff has decreased by more t han 40% under the same level of the annual precipitat ion in recent years. M eanw hile, the percentage of the w at er consumpt ion in the total w ater is increasing yearly, w hich leads to that the river drying-up becomes nor-mal and the w ater environment is det eriorating seriously in the lower reaches of the Hutuo River. The M iddle Route of the Sout h-t o-North Water Diversion Project is an opportunity to re-establish t he relationships betw een flood cont rol, w ater supply, and environment protect ion in the lower reaches, and then to restore the w ater environment of the H utuo River.
