By using soil-drilling method,this research investigated the root distribution characters of Robinia pseudoacacia in Weibei loess plateau.The results indicated that there were remarkable differences in both the vertical and horizontal root distribution patterns of Robinia pseudoacacia on slopes with different directions.And the root distritution patterns of main root indexes,such as root length and surface areas of unit volume of different diameter,changed both in vertical and horizontal directions.Fine roo...
修改评论