thalweg 中文意思是什麼
thalweg
解釋
n. 名詞 1. 【地質學；地理學】河流谷底線。2. 【法律】（國際法）河道分界線。
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First, according to measured data and literature, the river channel evolution rule and its reasons in the southern branch of the yangtze river are discussed from the perspectives of historic evolution, recent evolution and the tendency prediction of river channel evolution. besides, the local reservoir has been studied from the changes in thalweg and section as well as the calculation of local erosion and deposit. consequently, the stability and feasibility of reservoir construction in the river section are approved
首先根據大量實測資料及文獻資料，就歷史變遷、近期演變、河演趨勢預測等方面，初步探討了長江口南支河段河道演變規律及原因，並具體就深泓線的變化、主槽斷面變化、局部沖淤計算等方面對擬建水庫局部區域進行了分析，論證了工程河段建設水庫的穩定性及可行性。 -
The result reveales that the decrease of sediment transportation of the upper reaches results in riverbed scouring and coarsing on yidu reach ; the upper and lower shallow regions in shahong are separately deepened and broadened, while the thalweg in shihong is lowered, and nanyangqi is scoured and draw back … all the above may cause variation of the distribution pattern
結果表明，來沙量減少使宜都水道沖刷，沙泓上淺區沖刷下切，而下淺區以沖灘為主，石泓深泓沖刷下降，南陽磧沖刷縮小，分流格局有發生變化的趨勢。 -
Through the analyses of characteristics of gully thalweg and soil erosion in upland and gully land, sediment sources in small watershed, sediment yield relationship between upland and gully and ecological functions of vegetation corridor, it is considered that vegetation corridor combined with land preparation measures may block runoff and sediment from upland and reduce the amount of soil erosion in a watershed by 54. 5 % ~ 77. 0 %
摘要在分析黃土高原地區的溝沿線、溝沿線上下溝間地和溝谷地土壤侵蝕特徵、小流域泥沙來源、坡溝侵蝕產沙關系的基礎上，結合廊道的生態功能和以往的研究結果，認為在溝沿線的上部建立草灌與整地工程措施相結合的植物廊道，來攔蓄阻截溝間地的來水來沙，可使流域的土壤侵蝕量減少54 . 5 % ~ 77 . 0 % 。
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