贵州省喀斯特地区典型小流域不同种植模式坡面径流产沙研究
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贵州省自然科学基金项目“贵州喀斯特地区典型小流域降雨与径流泥沙关系研究”(黔科合J字[2008]2076);
贵州省水利重大科研课题“贵州喀斯特地区土壤侵蚀机理及水土流失预测”(KT200703)


Runoff and Sediment Yield on Slope with Different Planting Patterns for a Typical Small Watershed in Karst Region of Guizhou Province
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    摘要:

    对位于贵州省喀斯特地区的龙里水土保持科技示范区10个不同种植模式的径流小区进行了试验观测。研究表明, 在相同的降雨条件下, 灌木(如树莓)、天然草地和撂荒地等坡面径流产沙量较小, 径流量分别为0.71, 0.74和0.71m3, 产沙量分别为20.3, 20.3和20.16g, 上述3种种植模式坡面水土保持功能较好。乔木种植模式则因未能形成灌木层、草本层及枯枝落叶层等, 其坡面水土保持功能较差, 3个乔木径流小区的径流量分别为1.18, 0.98和0.95m3;产沙量分别为119.56, 126.56和125.89g, 均远大于其他几种种植模式。坡耕地因免耕、地表结皮等原因, 其水土保持功能也好于乔木种植小区。

    Abstract:

    Ten runoff plots with different planting patterns were established for experimental observation in the Longli soil and water conservation demonstration area of science and technology in karst region of Guizhou Province.Results show that under the same rainfall condition, shrub land(such as Rubus idaeus), natural grassland and abandoned land presented the best function of soil and water conservation. Runoff yields on the three kinds of land were 0.71, 0.74 and 0.71m3 and sediment yields, 20.3, 20.3 and 20.16g. The function of soil and water conservation was poor for arbor planting pattern, because the shrub layer, herb layer and forest floor were not formed. Runoff yields for the three plots with arbor planting pattern were 1.18, 0.98 and 0.95m3 and sediment yields, 119.56, 126.56 and 125.89g. Because of no-tillage, sur-face crust and other effects, the function of soil and water conservation in slope farmland was better than that in runoff plots with arbor planting pattern.

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李瑞,刘瑞禄,吕涛,李勇,刘云芳,杜迪.贵州省喀斯特地区典型小流域不同种植模式坡面径流产沙研究[J].水土保持通报,2012,(5):132-135

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  • 收稿日期:2011-10-09
  • 最后修改日期:2011-12-28
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  • 在线发布日期: 2014-11-25
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