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为减轻重力侵蚀危害和提高埂坎利用率,以定西市安家沟小流域为试验区,开展梯田埂坎林绿化效益试验。试验结果表明,栽植梯田埂坎林能够有效地拦蓄地表径流和泥沙,能显著降低风速,提高空气湿度,降低地表温度,缩小土壤表层地温的日较差和近地层气温的日较差,并且可以获得稳定的经济效益,是增加经济收入和解决山区“三料”问题的有效措施。
In order to mitigate the damage caused by gravity erosion and improve the utilization ratio of ridges and canopies, Anjiagou catchment watershed in Dingxi City was used as the experimental area to carry out the greening benefit test of ridges and valleys in terraced fields. The results showed that the transplanted terraces can effectively save the surface runoff and sediment, reduce the wind speed significantly, increase the air humidity, lower the surface temperature, reduce the daily diurnal variation of the soil surface temperature and the near diurnal temperature, and Can obtain stable economic benefits and is an effective measure to increase economic income and solve the problem of “three materials” in mountainous areas.