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刺槐是黄土地区主要的水土保持树种之一,山西、河南、陕西、甘肃和辽宁等省都有大面积分布,发挥着重要的保持水土作用。水土流失可分为流失和冲刷两个过程,土壤抵抗侵蚀的性能也相应地表现为抗蚀性和抗冲性。而且,在疏松的黄土上冲刷强度常常是大大超过了流失的强度。因此,研究刺槐林地土壤抗冲性,对于了解刺槐的水土保持机理具有重要意义。我们采用试验与调查相结合的方法,对刺槐林地土壤抗冲性能作了初步探讨。一、试验方法土壤抗冲性用冲刷槽进行测定。冲刷槽长
Robinia pseudoacacia is one of the main soil and water conservation tree species in the loess area. Shanxi, Henan, Shaanxi, Gansu and Liaoning provinces have large-scale distribution and play an important role in soil and water conservation. Soil erosion can be divided into erosion and erosion of the two processes, the soil erosion resistance performance correspondingly showed corrosion resistance and impact resistance. Moreover, the scouring intensity on loose loess often exceeds drastically the intensity of the loss. Therefore, studying the soil anti-scourge of Robinia pseudoacacia forest land is very important for understanding the soil and water conservation mechanism of Robinia pseudoacacia. We used a combination of experimental and survey methods to evaluate the impact resistance of Robinia pseudoacacia forest soils. First, the test method Soil impact resistance with the erosion tank measured. Scour slot length