Study on root system of plant community in different kinds of sandy land in Hobq

An experiment was conducted in Hobq to study the root system biomass in different kinds of sandy land.Root length density,root weight density,specific root length and root length density in different diameters and their vertical distribution patterns of root system was also analyzed.Result shows that the total root weight an specific root length have significant difference but the total root length has no significant difference,and the root system are all concentrated in the 0 to 30 cm soil depth.The vertical distribution of root system is greatly affected by soil water content and soil bulk density,but the effect has different in different sandy lands.The fine root(d≤2 mm) takes great proportion in total root system and with significantly vertical distribution characteristics.