人民黄河
人民黃河
인민황하
Yellow River
2014年
11期
7-8,12
,共3页
天然径流量%连续枯水时段%龙羊峡水库%黄河
天然徑流量%連續枯水時段%龍羊峽水庫%黃河
천연경류량%련속고수시단%룡양협수고%황하
natural runoff%continuous dry period%Longyangxia Reservoir%Yellow River
20世纪90年代以来,黄河来水量总体呈偏枯态势。自1990年至2011年的22 a花园口水文站多为偏枯与枯水年份,间有平水年,多数年份与上游龙羊峡水文站枯与偏枯性质同步,但有个别年份下游偏枯而上游偏丰,这有利于上游大型水库蓄水进行多年调节,以丰补欠,满足全河工农业及生态用水。1994—2002年为连续9 a枯水与偏枯时段,与历史上1922—1932年连续11 a枯水时段相比较,在枯的程度与年数上1922—1932年更为严重,因此应作好遭遇更长连续枯水段的水量调度预案。
20世紀90年代以來,黃河來水量總體呈偏枯態勢。自1990年至2011年的22 a花園口水文站多為偏枯與枯水年份,間有平水年,多數年份與上遊龍羊峽水文站枯與偏枯性質同步,但有箇彆年份下遊偏枯而上遊偏豐,這有利于上遊大型水庫蓄水進行多年調節,以豐補欠,滿足全河工農業及生態用水。1994—2002年為連續9 a枯水與偏枯時段,與歷史上1922—1932年連續11 a枯水時段相比較,在枯的程度與年數上1922—1932年更為嚴重,因此應作好遭遇更長連續枯水段的水量調度預案。
20세기90년대이래,황하래수량총체정편고태세。자1990년지2011년적22 a화완구수문참다위편고여고수년빈,간유평수년,다수년빈여상유룡양협수문참고여편고성질동보,단유개별년빈하유편고이상유편봉,저유리우상유대형수고축수진행다년조절,이봉보흠,만족전하공농업급생태용수。1994—2002년위련속9 a고수여편고시단,여역사상1922—1932년련속11 a고수시단상비교,재고적정도여년수상1922—1932년경위엄중,인차응작호조우경장련속고수단적수량조도예안。
Since 1990s,the Yellow River water amount has shown partial dry trend in general. Dry years and partial dry years mostly occurred at Huayuankou Hydrological Station within the 22 years from 1990 to 2011,sometimes normal years occurred. The characteristics of day years and partial dry years in most years were synchronized with Longyangxia Hydrological Station in upper reaches,but in specific years partial dry years oc-curred in lower reaches,meanwhile wet years occurred in upper reaches,which was propitious to multi-year regulation of large-scale reservoirs in upper reaches to supplement water shortage and satisfy agricultural and ecological water demand. Dry period and partial dry period of continuous 9 years from 1994 to 2002 occurred. Compared with the historical continuous dry period of 11 years from 1922 to 1932,the dry degree and duration of the latter was more severe. Therefore water regulation pre-arranged plan should be prepared to prevent longer continuous dry period.