新型生态植被毯边坡防护技术水土保持效应研究

新型生态植被毯边坡防护效果良好,目前常用的植被毯种类有椰丝型、麦秸型以及椰丝麦秸混合型。为优选出性价比最高的植被毯材料,对这3种植被毯上建植植被的植被覆盖度、有效根密度、地表径流量、土壤侵蚀量和土壤抗蚀性能进行了对比分析。结果表明,与在自然坡面上建植植被相比,植被毯护坡均可以增加土壤的覆盖度,减少降水的径流量与土壤侵蚀量。结合植被毯的产品质量指标,椰丝麦秸混合型植被毯性价比较高,可以作为普遍推广的植被毯品种。研究成果可为植被毯的施工及推广应用提供一定科学依据。

Study on effect of new ecological vegetation blanket in soil and water conservation of slope

New ecological vegetation blanket is satisfactory in slope protection and the popular vegetation blankets include coconut silk type, wheat straw type and mixed type of coconut silk and wheat straw. To select highest performance-price material, the vegetation coverage, runoff, soil erosion and soil anti-erosion capacity of 3 vegetation blankets are compared and analyzed. The results show that compared with natural slope, the slope protected by vegetation blanket can increase the soil coverage, reduce runoff and soil erosion. In the view of quality index, the mixed vegetation blanket of coconut silk and wheat straw is higher in performance-price ratio and can be popularized. The study achievements can provide scientific basis for the construction and popularization of vegetation blanket.