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| Effects of wind prevention and sand resistance of high-cold oasis protection system in Qinghai-Tibet Plateau |
| Zhang Kebin,Li Rui,Wang Baitian |
| College of Soil and Water Conservation,Beijing Forestry University,Key Lab. of Soil & Water Conservation and Desertification Combating,Ministry of Education,100083,Beijing,China |
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Abstract Xiangride Oasis as a typical high-cold artificial oasis was selected.By investigating the present status of protection forest,observing strong wind in deferent season in oasis exterior,border and interior,sand-resistance.The results showed that the effects of wind prevention of the oasis protection forest system were marked.In oasis border and interior the wind speed are reduced 1/3 and 1/2 than in oasis exterior and the wind prevention degree was 60.44%.The sand resistance of shrubbery in oasis exterior was also significant.The total width and the amount of sand resistance were linear positively significant(<i>P</i><0.01, <i>r</i>=0.782 3**);the shrub height and the amount of sand resistance were linear significant(<i>P</i><0.01,<i>r</i>=0.608 8*).
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Received: 07 September 2006
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