王美华, 谷桂华, 李枫. 元江上游流域综合治理效应分析[J]. 西南林业大学学报, 2008, 28(7): 10-12. DOI: 10.11929/j.issn.2095-1914.2008.07.003
引用本文: 王美华, 谷桂华, 李枫. 元江上游流域综合治理效应分析[J]. 西南林业大学学报, 2008, 28(7): 10-12. DOI: 10.11929/j.issn.2095-1914.2008.07.003
WANG Mei-hua, GU Gui-hua, LI Feng. Analysis on Integrated Management Effects in the Upstream Basin of Yuanjiang River[J]. Journal of Southwest Forestry University, 2008, 28(7): 10-12. DOI: 10.11929/j.issn.2095-1914.2008.07.003
Citation: WANG Mei-hua, GU Gui-hua, LI Feng. Analysis on Integrated Management Effects in the Upstream Basin of Yuanjiang River[J]. Journal of Southwest Forestry University, 2008, 28(7): 10-12. DOI: 10.11929/j.issn.2095-1914.2008.07.003

元江上游流域综合治理效应分析

Analysis on Integrated Management Effects in the Upstream Basin of Yuanjiang River

  • 摘要: 对元江流域上游区域水土流失治理状况和元江水文站降水、径流、泥沙等水文要素变化趋势进行分析,从水文学角度探讨流域治理前后水文特性的变化.结果显示:流域治理后径流系数较治理前减小2.9%,比多年平均值减小6.6%,流域内产生了一定的减水效应;流域治理后的多年平均土壤流失量比治理前减少了28.1%,最大年输沙量比治理前减少了47.3%;特别近几年的流域土壤流失量减小到了历史较低值,流域减沙效应显著.

     

    Abstract: On the analysis of governance situation of the soil erosion in the upstream region of Yuanjiang basin and the trend in the changes of the hydrological elements in the Yuanjiang hydrological station,such as pre-cipitation,runoff,silt and so on. From the point of hydrology,discussiong the changes of hydrological features that before and after the basin governance. The results show that: After govemancing,the run-off factor have reduced by 2.9%,which have reduced by 6.6% than the average for many years,the basin produces a certain amount of the effect of the reduction in water;After govemancing,the average years of soil erosion have reduced by 28.1%, the largest annual sediment discharge have reduced by 47.3%;Particularly,in recent years,the amount of soil erosion have reduced to the lowest in history,The reduction in the sand of the basin have a significant effect.

     

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