Study on the Sustainable Development of the Grassland Production in Loess Plateau──Ⅱ.Influence of the Declined Grassland Evolution by Reseeding Astragalus adsurgens
The varieties of Astragalus adsurgens are introduced into the declined grassland of Thymus mongoricus communities,which can not only impror the declined grassland,but also make the Thymus mongoricus communities evolute into a top community that is Stipa bungeana in 9-10 years.The results can form a good basis for sustainable development of natural grassland.The mechanism of the process is that Astragalus adsurgens can quickly exclude Thymus mongoricus from the communities,and supply enongh space for Stipa b...
修改评论