摘要
[目的]评价不同材料、不同模式沙障的固沙效益,为青土湖的治理提供建议。[方法]通过在风沙口设置不同材料、不同模式的沙障,监测分析不同类型的沙障在不同风力条件下的固沙效果、保存年限等。[结果]麦草网格沙障利用价值最高,表现在积沙能力强、成本低廉、使用寿命长。其成本类同于粘土沙障,棉花秆、芨芨草低立式沙障、土工编织袋沙障、高分子固沙剂沙障、沥青沙障、生态垫沙障、尼龙网沙障积沙能力明显,实用价值较高,但由于造价昂贵,限制了其推广应用。[结论]青土湖地形复杂,流动沙丘一般以沙垅、新月形沙丘出现,高度在3～15m,在沙丘的不同部位应设置不同的沙障组合,以实现沙障整体功能最大化。同时,根据各沙障的优缺点安排所处的位置,以充分调动其固沙潜力。
[ 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 preserva- tion. [ 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 a- gent 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 bar- riers 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 arraneement.
出处
《安徽农业科学》
CAS
北大核心
2011年第17期10415-10416,10541,共3页
Journal of Anhui Agricultural Sciences
关键词
青土湖
不同沙障
治沙
作用
影响
Qintuhu
Different sand barriers
Government
Use
Effects
