Quantitative assessment the impacts of climate change and human actives on wind erosion:a case study of Inner Mongolia Autonomous Region
Quantitative assessment the impacts of climate change and human activities on wind erosion is a pre-requisite for scientific prevention and mitigation of wind erosion.By using the National Wind Erosion Survey Model of China(NWESMC),the controlling variables method and the residual trend analysis method,this pa-per improved the assessment method for the driving force of wind erosion,and quantitatively evaluated the im-pact of climate change and human activities on wind erosion in Inner Mongolia Autonomous Region.The results showed that the annual average wind erosion in Inner Mongolia Autonomous Region was 2.59×1011 t,the wind erosion modulus was 2 260.94 t.km-2·a-1,mild and light eroded areas accounted for about 78.30％of the total area.The wind erosion modulus showed a significant decreasing trend,and the decreasing rate of wind erosion modu-lus was 55.95 t·km2·a-2.Climate change is the main driving factor for wind erosion variation,occupy 63.98％of the total area.Human activities is an important factor for wind erosion variation,contributing 36.02％to the total area.Further analysis showed that land use type is an important factor for the spatial distribution of wind erosion.Wind speed and vegetation coverage are the main factor for the temporal variation of wind erosion.The variation of vegetation coverage affects by climate change and human activities.Splitting the roles of climate change and human activities in vegetation factor is helpful for accurately assessing the driving forces of wind erosion.
NETL
NSTL
万方数据
