黄麻纤维沙袋沙障对流动沙丘植被恢复的影响

Influence of Jute Fiber Sandbag Sand Barrier on Vegetation Recovery in Mobile Dunes

黄麻纤维沙袋沙障能够有效控制地表风蚀,促进流动沙丘植被恢复,且其顶部可人工建植,易建成植物活沙障防护体系。为了解黄麻纤维沙袋沙障对流动沙丘植被恢复的影响,本研究对不同埋设深度、规格、设置位置的黄麻纤维沙袋沙障顶部及沙障带间植被生长情况进行了调查研究。结果表明:(1)黄麻纤维沙袋沙障设置1年后,沙障防护区内植物种类显著增加,植被盖度可达25.50%,是对照的5.89倍。(2)埋设处理有助于沙障顶部建植,全埋方式沙障顶部植物长势最好。(3)2 m带间距黄麻纤维沙袋沙障顶部植被盖度达到了25.55%,但是植物种类较少,而随着带间距的增加,植物的种类呈现增加的趋势。(4)建议将黄麻纤维沙袋沙障设置于流动沙丘迎风坡中部以下区域,并通过向沙障内部添加保水保肥材料,增加其他沙生植物种及全埋处理等方式,提高沙障顶部建植效率。

Jute fiber sandbags sand barrier can control surface wind erosion effectively and promote the vegetation recovery of mobile dunes,and easy to build plant-sand barrier protecting system by planting on their top.In order to understand the effect of vegetation restoration of jute fiber sandbag sand barrier on mobile dunes,the vegetation growth of top and their between space of jute fiber sandbags which were burial depths,specifications and setting positions were investigated.The results show that:(1)Plant species increased significantly in the sand barrier protection zone after 1 more years later,vegetation coverage was up to 25.50%,and was 5.89 times that of the control.(2)Buried treatment helps to build vegetation on the top of the sand barrier,and fully buried was the best way.(3)Vegetation coverage reached 25.55%of 2m belt spacing type,but plant species were less.With the increase of belt spacing,plant species showed an increasing trend.(4)It is suggested that the jute fiber sandbag sand barrier be set in the area below the middle part of the flowing dune windward slope,improving the top of sand barrier planting efficiency could by adding water and fertility materials to the interior of the sand barrier,adding other species of sandy plants and fully buried treatments.