人民黄河
人民黃河
인민황하
Yellow River
2014年
8期
10-14
,共5页
驱动因子%演变特征%输沙量%径流量%降水量%洮河流域
驅動因子%縯變特徵%輸沙量%徑流量%降水量%洮河流域
구동인자%연변특정%수사량%경류량%강수량%조하류역
driving factors%characteristics evolution%sediment%runoff%precipitation%Taohe River basin
采用洮河红旗水文站1956-2013年的水沙资料和流域降水资料，应用累计滤波器法、Mann-Kendall法、双累计曲线法等分析了洮河流域水沙量的时间序列变化特征，定量估算了降水变化和人类活动对年径流量和年输沙量的影响。结果表明：洮河流域年降水量、年径流深和年输沙量的变化倾向率分别为-4．6 mm/10 a、-13．8 mm/10 a、-444万t/10 a，年径流量及年输沙量在1986年左右发生了突变；就平均情况而言，降水和人类活动对径流的影响量分别约占径流减少总量的32．9％、67．1％，对输沙的影响量分别约占输沙减少总量的47．4％、52．6％，不同阶段的人类活动特征明显；随着流域内大规模人类活动的继续，水沙量的递减趋势在未来一定时期内将会持续。
採用洮河紅旂水文站1956-2013年的水沙資料和流域降水資料，應用纍計濾波器法、Mann-Kendall法、雙纍計麯線法等分析瞭洮河流域水沙量的時間序列變化特徵，定量估算瞭降水變化和人類活動對年徑流量和年輸沙量的影響。結果錶明：洮河流域年降水量、年徑流深和年輸沙量的變化傾嚮率分彆為-4．6 mm/10 a、-13．8 mm/10 a、-444萬t/10 a，年徑流量及年輸沙量在1986年左右髮生瞭突變；就平均情況而言，降水和人類活動對徑流的影響量分彆約佔徑流減少總量的32．9％、67．1％，對輸沙的影響量分彆約佔輸沙減少總量的47．4％、52．6％，不同階段的人類活動特徵明顯；隨著流域內大規模人類活動的繼續，水沙量的遞減趨勢在未來一定時期內將會持續。
채용조하홍기수문참1956-2013년적수사자료화류역강수자료，응용루계려파기법、Mann-Kendall법、쌍루계곡선법등분석료조하류역수사량적시간서렬변화특정，정량고산료강수변화화인류활동대년경류량화년수사량적영향。결과표명：조하류역년강수량、년경류심화년수사량적변화경향솔분별위-4．6 mm/10 a、-13．8 mm/10 a、-444만t/10 a，년경류량급년수사량재1986년좌우발생료돌변；취평균정황이언，강수화인류활동대경류적영향량분별약점경류감소총량적32．9％、67．1％，대수사적영향량분별약점수사감소총량적47．4％、52．6％，불동계단적인류활동특정명현；수착류역내대규모인류활동적계속，수사량적체감추세재미래일정시기내장회지속。
Using the precipitation statistics and water and sediment data of Hongqi Hydrological Station on the Taohe River from 1956 to 2013 and applying the cumulative filter method,Mann-Kendall method,the double cumulative curve method etc,it aimed at the analysis of the time series variation of water and sediment in Taohe River basin and the quantitative estimation about effects of precipitation and human activities to the annual runoff and annual sediment discharge. The results show that the change trends of annual rainfall,annual runoff depth and annual sediment dis-charge of the river basin are -4. 6 mm/10 a,-13. 8 mm/10 a and -4. 44 million t/10 a respectively. Annual runoff and annual sediment dis-charge change greatly in about 1986. On average,the influence on water flow volume caused by precipitation and human activities accounts for 32. 9% and 67. 1% respectively of the total runoff decrease. Also,their impacts on the sediment transport amount account for 47. 4% and 52. 6%respectively of the total sediment reduction. Then,characteristics of human activities in different phases of the basin are very obvious. With the ac-cumulation of human activities,the decreasing trend of water and sediment will be continued in a definite period of time in the future.
