The Use of Different Sand Barriers and Effects to Surrounding Government
MA Shu-hong et al (Minqin Liangucheng National Nature Reserve of Gansu province,Minqin ,Gansu 733300)
[objective]The aim was to evaluate the fixation efficiency of sand barrier of different materials, different modes , and offer some suggestions about the government of Qingtuhu. [method] By setting up sand barrier of different materials, different modes in the sand outlet, the fixing effect of the sand barrier of different types in different wind conditions were monitored and analyzed ,such as the length of preservation. [result] Straw checkerboard barriers were the most valuable ,because of the good ability to gather sand, low cost ,long life. Its cost was similar to the cost of clay sand barrier, cotton stalk , strings the grass low vertical sand barrier, non-woven bag sand barrier, polymer fixing agent sand barriers, asphalt sand barrier, ecological mat sand barrier. Nylon mesh sand barrier had the ability to gather sand and had high practical value, but expensive. So the application was limited. [conclusion] The position of Qingtuhu was complex, sand dunes appeared in crescent-shaped dunes at the altitude between 3-15 m. To achieve the maximum function of sand barrier, different parts of the dune sand barriers should be set in different positions. Meanwhile, according to advantages and disadvantages of the sand barrier, positions to fully mobilize the potential of land was made arrangement .
【CateGory Index】： X171.1