Simulation Study On Effects Of Sheep Trampling On Grazing Land Erosion

The grassland resources in Inner Mongolia are fairly rich. For a long time, however, natural factors and mankind unreasonable activities such as overgrazing have led to degradation of grassland and deterioration of ecological environment. The stable and sustainable development of pastoral livestock industry is faced with stern challenges. It is an essential problem to study the protection of grassland resources from being devastated and achieve sustainable development of pastoral livestock industry For the present, there are more research of environment's influence to browse and trample at home and abroad, but, research of land's traffic machine is very less. This thesis will select several vegetation coverage lands and measure them by means of the movable wind erosion tunnel produced by Inner Mongolia Agricultural University and a traffic machine developed by myself in Zhaohe's grassland of Inner Mongolia. On basis of the studies on the related conferences at home and abroad. The relationship between wind velocity and amount of wind erosion is completed as the traffic stress is deferent. The relationship between vegetation coverage and amount of wind erosion is completed as the traffic stress is deferent. The relationship between traffic stress and amount of wind erosion is completed as the vegetation coverage is deferent. Conclusions from the research were summarized as follows: Amount of wind erosion was declined when the vegetation coverage was rose, the relation of them accorded with exponential;The extent of the amount of wind erosion was enlarge gradually when vegetation coverage was rose, especially when the vegetation coverage rose from 60 percents to 80 percents the extent of the amount of wind erosion was more heavier; The velocity of the amount of wind erosion rose faster as soon as the traffic stress rose. If the traffic stress was 60 times the amount of wind erosion begin to rise quickly;The total amount of wind erosion trended up when the vegetation coverage of was the traffic stress rose. The equation was Q= ax~2+bx+c。...