It is one of the most important roles of soil in hilly and gully loess regions to reduce or control soil and water loss.The soil samples were taken from 0~50 cm soil at an interval of 10 cm in permanent grassland,20-year,8-year and 3-year farming-withdrawn grasslands,3-year artificial grassland and farmland(Control).Twelve representative soil parameters were chosen to screen the main factors affecting soil quality by factor analysis,and therewith analyze the soil quality evolvement of grassland.The results ...
修改评论