Zhao Hongyan,Wu Qinxiao.Study on Sediment and Yield Runoff of Nature Mountain Populus Woodland in Loess Plateau[J].Research of Soil and Water Conservation,1996,3(04):120-123.
黄土高原天然山杨林地产流产沙研究
- Title:
- Study on Sediment and Yield Runoff of Nature Mountain Populus Woodland in Loess Plateau
- 摘要:
- 研究了天然山杨林地的产流产沙，结果表明：与采伐林木辟为农地比较，天然山杨林和采伐林木保护草灌层林地径流高度各降低62.5% 和51.1%；产流总时间各滞后90和10min；混水量各降低92.8% 和92.9%，含沙量降低99.1% 和99.2%；侵蚀模数降低99.9% 和99.9%；前者径流曲线陡峭、起伏程度大，后者平缓、起伏程度小。
- Abstract:
- This paper studies sediment and yield runoff in different treatment mountain populus woodland.The result show nature mountain populus and herb and grass and litter layer after cut mountain populus woodland runoff height reduce 62.5% and 51.1%,runoff flow time retard is 90 min and 10 min, runoff amount reduce 92.8% and 92.9%,sediment reduce 99.1 % and 99.2%,erosive amount reduce 99.9% and 99.9%, runoff curved line change is very much compared with cut mountain populus woodland.
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备注/Memo
收稿日期:1996-3-10
基金项目:中国科学院水利部水土保持研究所土壤侵蚀与旱地农业国家重点实验室资助