几种沙障在沙荒风口造林中的应用与分析

Application of Several Sand-barriers on Afforestation in Wind Gap on Coastal Sand & Desert Belt

长乐市在多年沿海防护林建设过程中,在沙障在基干林带沙荒风口造林中的应用方面积累了大量的经验。通过采取筑沙袋土墙、插枝沙障、种植甜根子草、设防沙栅栏等形成的4种不同类型的沙障在长乐市沙荒风口的应用试验,观察其实际成效、分析其作用原理及其对沙荒风口新造林地的影响,结果表明:不同类型的沙障技术措施对基干林带沙荒风口的造林具有不同程度的保护作用;沙袋土墙和防沙栅栏比种植甜根子草和插枝沙障更能提高苗木保存率。

In the process of coastal protection forest construction for many years, Changle city has accumulated lots of expe- riences on applying sand-barriers on afforestation of trunk shelterbelt in wind gap on coastal sand ＆ desert belt. Through ap- plication of four kinds of sand-barriers which were formed by building sandbag walls, sand-barriers with cuttings, planting Saccharum spontaneum Linn. , setting sand-barriers in Changle city, its actual effect was observed ; its action principle and its effect on new plantations in the wind gap on coastal sand ＆ desert belt were analyzed. Result shows that ：different sand- barriers control techniques have different degrees of protection on afforestaion in wind gap on coastal sand ＆ desert belt; sandbag walls ＆ sand fence can increase much more preservation rate than planting Saccharum spontaneum Linn. ＆ setting sand barrier with cuttings.