干旱区生态环境知识资源中心(Arid): 机械沙障在退化人工梭梭林恢复中的应用

Arid

	机械沙障在退化人工梭梭林恢复中的应用
其他题名	Application of Sand Barriers in Regenerating the Degenerated Artificial Forests of Haloxylon ammodendron Bge
	马全林; 王继和; 刘虎俊; 詹科杰
来源期刊	干旱区研究
ISSN	1001-4675
出版年	2005
卷号	22 期号:4 页码:526-531
中文摘要	在民勤治沙综合试验站进行的退化人工梭梭林恢复试验表明，机械沙障可以提高退化梭梭林下垫面的粗糙度，降低近地面层风速，固定流沙，减少风蚀，同时对退化植被及其土壤含水率也有一定的恢复作用，可在绿洲边缘退化植被恢复中推广应用。三种机械措施相比，布设前两年的麦草方格沙障的防风固沙效果最好，但作用年限最短，年成本最高，价值系数低；粘土沙障的防风固沙效果最差，年成本最低，价值系数最高；塑料方格沙障防风固沙效果、年成本和价值系数均介于麦草方格沙障和粘土沙障之间。
英文摘要	The study area is at Minqin Desert Control Experiment Station located in the Shajingzi region in the southern marginal zone of the Badain Juran Desert, where it belongs to the typical arid desert climate, the annual, maximum and minimum temperatures are 7.68℃, 40.0℃ and -28.8℃ respectively; the annual precipitation and evaporation are 116.2 mm and 2 643.9 mm respectively, the average relative humidity is 51%, the aridity index is 5.3, and the frost-free period is 175 days; the average annual wind speed and sand-rising wind speed are 2.5 m/s and 5.0 m/s respectively; and the days of occurring strong winds, dust storms, blowing dusts and floating dusts are 26.3, 25, 37.5 and 29.7 days respectively. In this paper, an experimental study on regenerating the degenerated artificial forests of Haloxylon arnrnodendron Bge with the mechanical sand barriers is carried out at Minqin Desert Control Experiment Station. The results show that the roughness of underlaying surface under the degenerated forests of Haloxylon arnrnodendron Bge is increased as soon as the mechanical sand barriers are built in the forests, the wind speed and sand flux intensity at height of 0～20 cm is decreased, the mobile dunes can be fixed, and the wind erosion can be reduced. Moreover, the mechanical sand barriers can play a certain role in regenerating the degenerated artificial forests of Haloxylon arnrnodendron Bge and increasing soil moisture content, and they can be extensively applied in regenerating the degenerated vegetations in the marginal zone of oases. After comparing, it is considered that the sand-fixing effect of wheat straw breaks is the best in the first 2 years, but their service time is short, their annual cost is high, and their value coefficient is low; the sand-fixing effect of clay sand barriers is the poorest, their annual cost is the lowest, and their value coefficient is the highest; the sand-fixing effect, annual cost and value coefficient of plastic breaks are moderate among the 3 kinds of sand barriers.
中文关键词	机械沙障 ; 退化 ; 人工梭梭林 ; 恢复重建 ; 防风固沙 ; 价值分析 ; 民勤
英文关键词	mechanical sand barrier degeneration artificial forests of Haloxylon ammodendron Bge vegetation regeneration sand-fixing effect value analysis.
语种	中文
国家	中国
收录类别	CSCD
WOS类目	PLANT SCIENCES
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:2187360
来源机构	甘肃省治沙研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/206262
作者单位	甘肃省治沙研究所, 武威, 甘肃 733000, 中国
推荐引用方式 GB/T 7714	马全林,王继和,刘虎俊,等. 机械沙障在退化人工梭梭林恢复中的应用[J]. 甘肃省治沙研究所,2005,22(4):526-531.
APA	马全林,王继和,刘虎俊,&詹科杰.(2005).机械沙障在退化人工梭梭林恢复中的应用.干旱区研究,22(4),526-531.
MLA	马全林,et al."机械沙障在退化人工梭梭林恢复中的应用".干旱区研究 22.4(2005):526-531.