摘要
在中国北方74万平方公里的沙区中,共有蒿属植物50余种。其中有重要资源价值和环境功能的至少有5种,即差不嘎蒿、褐沙蒿、黑沙蒿、白沙蒿和沙蒿。它们是本区沙丘——沙地植被的主要建群种和优势种,由它们构成的沙地草场植被占1亿亩以上,可提供650余万绵羊单位的放牧饲料。它们又都是优良的固沙植物,对沙区环境保护具有重要作用。同时,还可以提供大量的中草药,它们的种子含油丰富,在工业利用上有广阔前景。
In the 740,000 square kilometres of sandy areas in north China there are 50-odd species of sagebrush distributed from the subhumid region in the east to the true arid region in the west,among which at least five ma- jor ones, Artemisia halodendron, A. intramongolica, A. ordosica, A. sphaeroc- ephala, and A.arenaria, are recognized. They are all constructive or domin- ant species in the vegetation of the sandy rangelands that occupy more than 7 million hectares of area, and may provide forage sufficient for feedingmore than 6.5 million sheep units of livestock. They are also excellent sand- fixators which efficiently, protect vast sandy lands from sand-drifting. These five species of sagebrush have also great potentials for providing herbal medicines and their seeds contain high percentage of oil and may have good prospect for industrial use.
出处
《干旱区资源与环境》
CSCD
1991年第1期12-21,共10页
Journal of Arid Land Resources and Environment
关键词
沙区
蒿属植物
建群种
优势种
应用
Sandy area
Sagebrush
Constructive species
Dominant species
