stream source area 中文意思是什麼
stream source area
解釋
河源地區-
Besides, the sedimentary facies of upper ganchaigou and lower ganchaigou formation were also mapped in supersequences which are the main target strata for exploration. the high resolution sequence stratigraphic framework showed the genetic relationship between the distributions of sedimentary facies and their tectonic settings. the near - source sedimentary systems such as subaqueous alluvial fan and lake - floor fan are often deposed in rise - hemicycles in the steep slope background in the north, the coarse lithology of fan - delta prograded from north to south in fall - hemicycles, and the braided stream facies are formed in the rise - hemicycles in gentle slope background in the south, braided stream facies prograded from sorth to north in the fall - hemicycles, but the lacustrine facies and salt lake facies developed in the middle part of the area
詳細的沉積相研究發現，紅獅地區第三系發育有沖積扇、水下沖積扇、河流、三角洲、扇三角洲、湖泊和湖底扇7種主要沉積相類型，並對作為區內主要勘探目的層系的下乾柴溝組和上乾柴溝組進行了以超層序為單位的沉積相平面編圖，以較高的時間解析度揭示了區內沉積相帶的平面展布及其在不同構造背景中的分佈規律，比如在北部的凹陷陡坡背景下，上升半旋迴低水位期通常發育有水下扇、湖底扇等陡岸近源特徵的沉積體系，下降半旋迴高水位期，扇三角洲相粗碎屑巖由北向南進積;在南部的凹陷緩坡背景下，上升半旋迴主要發育辮狀河流相，下降半旋迴辮狀河三角洲相由南向北進積;而中部紅柳泉一獅子溝一帶則為湖泊相沉積和鹽類沉積。 -
The study outcomes show that the soil conservation benefit gained through typical conservation measures for the upper stream of miyun reservoir is 62. 7 % and benefit of pollutant loss reduction between 25 % 40 % and ; the typical measures exert remarkable function on the aspects of area - source pollution control and water source protection
研究結果表明：水庫上游典型水保措施的保土效益達62 . 7 % ，減少污染物流失效益在25 % ~ 40 %之間；典型水保措施在減少入庫泥沙、減少進入水體的污染物等控制面源污染和保護水源方面發揮了顯著的作用。 -
Analysis on benefits of area - source pollution reduction through typical soil and water conservation measures conducted in upper stream of miyun reservoir
密雲水庫上游典型水保措施減少面源污染效益分析
分享友人