Study On The Effects Of Wind-breaking And Sand-fixation Of Different Sizes Of Living Salix Gordejevii Barrier

In this paper, Duolun County in Hunshandake sandland, for example, Through research analysis of four different sizes of Living Salix gordejevii barrier wind speed change,vegetation restoration and soil physical and chemical properties, conclusions on the effects of wind-breaking and sand-fixation of different sizes of Living Salix gordejevii barrier The results showed that:①Setting sand barriers can significantly reduce the wind force, increased surface roughness length, obvious reduces the amount of sand, has played a very good effects of Wind-breaking and Sand-fixation the sequence was: 4m×4m>6m×6m>6m>moving sand②The vegetation is improved, an annual plant,biennial herb and perennial herb species,amount of families and genera of vegetation and ground biomass increased obviously From different plots of vegetation community diversity index results showed that, With the sand barrier Effects of Wind-breaking and Sand-fixation increased vegetation community diversity index increased, The ecology dominance changes is small, Pielou evenness index becomes the irregularity, similarity universal high between different plots, Because of the small number of plant species and various places within the repeated vegetation sequence is: 4m×4m>4m>6m×6m>6m> moving sand③Improve soil physical properties, soil water content and bulk density significantly improved From the chemical nature of the variance analysis showed that, chemical indicators of soil layers to a significant increase compared with the control, the sequence was: 4m×4m﹥4m﹥6m×6m﹥6m﹥moving sand...