沙漠-河岸过渡带不同天然植被群落类型防风效应评价-水土保持研究.PDF

13 1 . 13 . 1 Vol No 2006 2 Research of Soil and Water Conservation Feb. , 2006 - 于春堂, 杨晓辉, 李朝生 ( , , 1000 1) : , ( Carag ana inter med ia) (N itr ar ia tang utor um) ( Calamag r ostis ep ig ej os ) (L ey m us secalin us ) (A chnather um sp lendens ) 5 , , ( 10 cm) : ; ; , : ; ; : Q 48. 156; 157:A : 1005-340 (2006) 01-0118-02 Ef f ect Evaluati ng of Reducing Wind Vel ocity of Diff erent Natural Vegetati on in Desert- Ri versi de Ecotone YU Chun-tang, YANG Xiao-hui, LI Chao-sheng (R esear ch I ns tit ute of Forest , Ch inese A cademy of Forestry ,S ilv icultur al Center of S tate For es tr y A dm inistr at ion ,B eij ing 1000 1, Ch ina) Abstract: In order to evaluat e the effect of reducing w ind velocit y of different natural vegetat ion, 5 natural shrub and grass vegetations, Carag ana intermed ia, N itr ar ia tang utorum , Calamag rost is ep ig ej os ,L ey m us secalinus and A ch nather um sp lendens in t he ecot one betw een the Kubuqi desert and the riverbank of the Yellow River w ere chosen and the uncovered sand w as selected as the comparison. The result s show ed that the order of the effect (near the ground, 010 cm ) of reducing wind velocity from strong to w eak w as L ey m us secalin us A ch nather um sp lendens Calamag rost is ep ig ej os uncovered sand N itr ar ia tang utor um Carag ana inter med ia . And there was a big difference of t he ratio of reducing w ind velocity among different height of t he same natural vegetation.As the height changing, t he ratio of reducing w ind velocity of different