207国道内蒙古段路域植被恢复技术及其效果  

Vegetation rehabilitating techniques and its effects in 207 national highway section of Inner Mongolia

作　　者：罗俊宝[1] 孙保平[1] 

机构地区：[1]北京林业大学

出　　处：《中国水土保持科学》2006年第B12期22-26,共5页Science of Soil and Water Conservation

基　　金：交通部西部交通建设科技项目"沙漠地区公路边坡防护及防风固沙技术研究"(200131877206)

摘　　要：通过对207国道的蒙古段路域流沙植被恢复前工程措施的作用机制的初步理论分析。表明流沙上设置黄柳活沙障后，地表粗糙度提高了465-643倍，减弱近地层风沙活动的强度，为植物的定居创造一个良好的生存环境，障中生长的白柠条、杨柴、榆树和沙棘的成活率分别比对照提高12％、9％、2％和5％。同时，黄柳活沙障也为其他植物种的入侵创造了条件，障内的植物增加了11种，盖度增加了50％-60％，生物量增加了20—26倍。This paper initially analyzed the mechanism of engineering methods before the vegetation rehabilitation work on the shiftting sand dune in 207 national highway section of Inner Mongolia, and it pointed out that engineering methods such as sand barrier make the underlying surface rougher, which is the principal factor affectingthe settlement of plnat seeds by breaking wind. The experiment shows that after setting the alive Salix gordejevii sand barrier, the roughness of surface increase four hundreds sixty-five to six hundreds forty-three times than original one, greatly weakening the kinetics intensity of wind near surface. As a result, a better living environment has been created for local vegetation, and the survival ratios of Caragana korshinskii, Hedysarum mongolicum, Ulmus Pumila, Hippophae rhamnoides growing within the alive Salix gordejevii sand harrier are twelve percent, nine percent, two percent and five percent respectively more than the comparative samples. Meanwhile, the alive Salix gordejevii sand barrier has also supplied chances for invasion of other plants, and the number of vegetation species within the barrier have increased eleven more than other places. The coverages in it have increased fifty percent to sixty percent, and the biomasses have also increased twenty to twenty-six times than CK.

关 键 词：黄柳活沙障 固沙 植被恢复 公路 

分 类 号：S731.6[农业科学—林学]