catchments hydrology 中文意思是什麼
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Dynamic control of the limit water level belongs to non - structural measures of reservoir operation. with the analysis of the cause and rule of flood in the catchments and taking advantage of hydrology and metrology information, the operable method can be obtained which not only satisfies the flood prevention but also takes full advantage of flood resources, and the upper and lower limits of the limit water level are determined with serial hydrology calculation. then, the rule of using the upper and lower limits is put forward to reach a beneficial flood operation with small risk
汛限水位動態控制方法屬於水庫風險調度的非工程措施范疇，通過分析流域洪水的成因和庫區降雨及致洪規律，結合水庫的蓄泄能力，積極慎重的利用水文氣象預報信息，研究既能滿足防洪要求，又可充分利用洪水資源的可操作性的調度方法，利用水文系列的連續演算方式推求汛限水位的變化范圍，提出使用汛限水位上下限的原則，達到風險較小、效益較大的目的。 -
The impacts of soil and water conservation on river flow and soil - hydrology of jia - lu - he, tu - wei - he, pian - guan - he and qiu - shui - he catchments have been analyzed by the simulation and on - spot measuring methods according to data of during 1950 ' s to 1990 ' s. the selected catchments of the above four all are in the key area of soil and water conservation on the loess pleatu. the main results are as follows. the trend, reasons and critical year of annual river flow " change have been researched by rank correlation and maximum deviation division
本文以黃土高原水土保持重點區的佳蘆河、禿尾河、偏關河和湫水河等四條流域為代表，採用定量與定性、模型模擬與實測對比相結合的方法，系統分析了上世紀50 90年代時段內水土保持對河川徑流及土壤水文的影響，取得主要結果如下：採用秩相關和極差分割等定量評價方法，分析了四條支流徑流量變化趨勢、變化原因及發生明顯變化的臨界年份。
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