Combining Mesoscale Model (MM5) and Shaos wind erosion scheme, numerical simulation on sand fixed effect of shrub belts and straw checkerboard barriers were conducted on the top of the Mogao Grottoes.
结合中尺度大气模式MM5和Shao的风蚀起沙方案,对敦煌莫高窟顶灌木林带和草方格沙障的固沙效应进行数值模拟研究。
Field data shows that reasonable distribution of contour shrub belt is of significant soil and water conservation effect with runoff decrease of over 30%, sediment reduction of more than 50%, and it can also increase plant coverage of 15% to 20% on slope farmland and forms shrub network on hill slope,and change the situation of ecological e.
资料表明 ,配置合理的等高灌木带具有较强的保持水土效益 ,其径流削减率在 3 0 %以上 ,泥沙削减率在 5 0 %以上 ,可增加坡耕地植被覆盖度 15 %～2 0 %,在峁坡上能很快形成林网 ,大大改观坡耕地长期植被稀疏、生态环境恶化状况。
So the moss mainly distribute in arbor belt and it is very sparse in shrub belt.
苔藓主要分布乔木带,灌木带则分布极少。
chiefly tropical trees and shrubs.
主要是热带乔木和灌木。
chiefly tropical trees or shrubs.
主要是热带乔木或灌木。
a family of tropical trees and shrubs of the order Myrtales.
热带乔木和灌木科包括。
pantropical genus of somewhat poisonous shrubs and small trees.
带些毒的灌木和小乔木的热带的属。
genus of tropical or subtropical branching shrubs or trees: mesquite.
热带或亚热带的一个属，为分枝的灌木或乔木；豆科灌木。
evergreen tropical American shrubs or small trees.
热带美洲一个常绿灌木或小乔木属。
small spiny tropical trees or shrubs; includes the small genus or subgenus Poinciana.
少部分多刺的热带乔木或灌木。
coniferous shrub or small tree with berrylike cones.
针叶灌木或带有浆果的小型树木。
genus of Old World tropical shrubs and woody vines.
旧大陆热带的灌木和木质藤属。
evergreen tropical trees and shrubs with milky sap.
产出奶汁的热带的长青的乔木和灌木。
tropical or subtropical evergreen shrubs or small trees.
热带或亚热带一个常绿灌木或小乔木属。
thorny shrubs and trees of tropical and subtropical America and Asia.
热带和亚热带美国和亚洲的多刺灌木和乔木。
type genus of Ochnaceae; evergreen trees and shrubs of Old World tropics.
金莲木科的模式属；旧大陆热带常绿灌木或乔木。
genus of tropical herbs or subshrubs having flowers in close heads; tropical America and Australia.
一个热带灌木或亚灌木属，头状花序密生；产于热带美洲和澳大利亚。
There is a Border of shruBs along each side of the path.
沿着小路两边各有一条灌木林带。
2 species of tropical American shrubs or trees.
热带美国树林和灌木的两个种类。
small tropical shrubby tree bearing small yellowish fruit.
灌木状热带小型树种，黄色小果实。
