The Erosion Control Effectiveness of Different Tree Species Shelterbelts on Sloping Farmland Soil in the Black Soil Region
The soil of sloping cultivated land with three tree species,Pinus sylvestris var.mongolica,Larix gmelinii and Populus ×xiaohei,as shelterbelts was taken as the research object,with slope-cultivated soils without shelterbelts serving as the control.Soil physicochemical properties,aggregate characteristics,and soil erodibility factors were measured and analyzed to investigate the differences in erosion resistance among different shelterbelt tree species and slope positions,as well as to explore the effects and potential regulatory mechanisms of tree species and slope positions on soil erosion resistance.The results showed that slope-cultivated soils protected by shelterbelts exhibit significantly higher erosion resistance compared to slope-cultivated soils without shelterbelt,with the most notable improvement in erosion resistance occurring in the mid-low-er and lower slope positions.Among the three tree species,L.gmelinii shelterbelts showed the most effective enhancement in soil erosion resistance of slope-cultivated soil.Soil density and dry sieve aggregate with particle sizes of 2.00 mm≤d<5.00 mm,0.25 mm≤d<0.50 mm,and d<0.25 mm significantly influenced soil erosion resistance,with the smallest parti-cle size (d<0.25 mm) exerting the greatest impact.The enhancement in erosion resistance by L.gmelinii shelterbelts is particularly notable,making it a preferred tree species for farmland shelterbelts in the Northeast Black Soil region.
Soil aggregateSoil erodibilitySoil erosionPinus sylvestris var. mongolicaLarix gmeliniiPopulus×xiaohei
NETL
NSTL
万方数据
