Study On The Effect Of Different Sandy Plant Shelterbelts With Typical Configuration In Wind Prevention

With the development of economy and human use natural resources disorderly, wind erosion became the world's most serious environmental and socio-economic problems, which made serious influence to hunman life and work. Research found that artificially protection, restoration, construction vegetation is the most effective and fundamental measures to prevent wind erosion, In arid and semi-arid regions, the vegetation coverage can must low because of lack of water. We can achieve the purpose of erosion control in low consumption water with scientific plant configration. The paper takes observation and artificial simulation experiment,compares and analysis the different configuration of Artemisia sphaerocephala. Caragana korshinskii& Salix psammophila, discuss the configuration of plants to support the control wind erosion with plant configuration. The following is the results:(1)When air pass natural plant, the energy of air decreased at the beginning and then increased, and reduce to the minimum in 1H. The air energy of the side was more than the windward side. The energy of the side decreased to the natural in the Leeward side 2H. Artemisia sphaerocephala effective distance was 7H and Caragana korshinskii& Salix psammophila effective distance was 5H.(2)In the vertical direction, the wind energy loss of Artemisia sphaerocephala zonal distributionwas eqal to evenly distribution, and both of them was more than the random distribution. In the horizontal diection, the wind the order of the energy loss of Artemisia sphaerocephala was zonal distribution evenly distribution random distribution.(3)The wind energy loss of Artemisia sphaerocephala,Caragana korshinskii& Salix psammophila with different row distributions, the order was three rows,two rows&one row, Artemisia sphaerocephala,Caragana Korshinskii&Salix psammophila. The effective distance of one row Artemisia sphaerocephala was 10H and Caragana korshinskii& Salix psammophila effective distance was 5H. two rows of Caragana korshinskii&Artemisia sphaerocephala effective distance was 10H and Salix psammophila effective distance was 7H. three rows of Artemisia sphaerocephala,Caragana korshinskii& Salix psammophila was 10H.(4)The wind energy loss of the shrub belt with different configurations firstly increased and then decreased.6H&8H>4H>10H&12H. the wind energy loss of Artemisia sphaerocephala,Caragana korshinskii& Salix psammophila wsa the same in 4H. the wind energy loss of Artemisia sphaerocephala&Caragana korshinskii was more than Salix psammophila in 8H. the wind energy loss of Artemisia sphaerocephala,Caragana korshinskii& Salix psammophila was not good in 12H (5)When we construction vegetation in the sandy land Considering the configuration, zonal distribution>evenly distribution>random distribution. Considering the rows and the belt distance, each belt two lines which belt distance was 6H-8H should be choosen. Considering the species, Artemisia sphaerocephala&Caragana should be choosen.