植物混凝土格栅技术在北京地区生态护坡中的应用

植物混凝土格栅技术是一种新型的生态护坡技术。选择北京地区延庆县水土保持科技示范园内一处陡峭裸露边坡为研究对象,研究了植物混凝土格栅技术在北京地区的适用性以及在岸坡生态修复中的作用。针对该段坡面存在的溅蚀、面蚀以及沟蚀等土壤侵蚀现象,采用植物扦插与混凝土格栅相结合的方法对裸露边坡进行近自然修复。分别对施工后3个月、15个月和47个月时旱柳的成活率、覆盖度以及47个月后旱柳的生长状况、土壤养分和生物多样性进行了调查监测。结果表明,利用该技术使旱柳的生长情况达到了较高的水平。47个月后旱柳的平均基径和平均株高分别为2.02cm和317.2cm,而且岸坡植被迅速恢复,生物多样性明显增加,土壤性质有所改良。

Application of Plant-Concrete Grillage Technology to Ecological Slope Protection in Beijing City

Plant—concrete grillage slope protection is a new technology for ecological slope protection.By taking a steep and bare slope located in Soil and Water Conservation Science and Technology Demonstration Park in Yanqing County of Beijing City as a research object,the applicability of the technology in Beijing City and its effects in ecological restoration on slope were studied.Because of the existence of splash erosion,surface erosion,gully erosion and other types of soil erosion,the method combining plant cuttings and concrete grillage was used to restore bare slope near-naturally.After 3,15 and 47 months of construction,survival rate and coverage degree of Salix metsudana were investigated and monitored,including the growth conditions,soil nutrients and biological diversity of 47-month-old Salix metsudana.It can be concluded that the growth of Salix metsudana using this technology has reached a higher level.The average branch diameter of 47-month-old Salix metsudana was 2.02 cm and the average stem height,317.2 cm.Meanwhile,vegetation on slope recovered rapidly,biological diversity increased obviously,and soil properties were improved somewhat.