河堤林带防治河坡水土流失及其效益研究
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Prevention and Control of Soil and Water Loss on River Slope and Benefits of River Embankment Forestbelt
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    摘要:

    在沿海沙土区,利用林木防治河?沟?渠系的堤面?坡面?青坎的水土流失,具有明显的水土保持效益,河沟坡面年土壤平均流失厚度可减少13.5~16.6mm.在生态环境方面,可减弱风速74.2K~83.5K,减少蒸发30.3%~33.1%,土壤有机质增加0.4g/kg~12.8g/kg,盐分下降30.4%~40.8%.河堤林带的益本比经济效益(E)为5.5,即E>1.

    Abstract:

    In the area of coastal sand soil,It has a obvious benefits of using forest to prevent and control the soil and water loss on embankment surface of river,gully,and irrigation canal.The average annual thickness of soil loss may be reduced by 13.5~16.6mm.In the respect of ecoenvironment,the wind velocity may be weakened by 74.2%~83.5%,the evaporation decreased by 30.3%~33.1%,the organic substance of slope soil increased by 0.4~2.8g/kg,and the salt content decreased by 30.4%~40.8%.The ratio between benefit and cost, namely,the economical benefit(E)is 5.5,that is to say that E1

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王剑,蒋瓒曾,黄存白.河堤林带防治河坡水土流失及其效益研究[J].水土保持通报,1995,(5):10-13,46

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  • 收稿日期:1995-07-18
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  • 在线发布日期: 2014-11-28
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