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thalweg
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最深谷底线,剖面线
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详细解释：
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以下为句子列表：
英文: 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 Shiho
中文: 结果表明，来沙量减少使宜都水道冲刷，沙泓上浅区冲刷下切，而下浅区以冲滩为主，石泓深泓冲刷下降，南阳碛冲刷缩小，分流格局有发生变化的趋势。
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英文: 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
中文: 摘要在分析黄土高原地区的沟沿线、沟沿线上下沟间地和沟谷地土壤侵蚀特征、小流域泥沙来源、坡沟侵蚀产沙关系的基础上，结合廊道的生态功能和以往的研究结果，认为在沟沿线的上部建立草灌与整地工程措施相结合的植物廊道，来拦蓄阻截沟间地的来水来沙，可使流域的土壤侵蚀量减少54.5%~77.0%。
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