Using Geographic Information System (GIS), based on wind speed, precipitation, topographic, soil, vegetation coverage and land use data of Inner Mongolia between 2001 and 2010, we applied the revised wind erosion equation (RWEQ) model to simulate wind erosion intensity. The results showed that an area of approximately 47.8 x 10(4) km(2) experienced wind erosion in 2010, 23.2% of this erosion could be rated as severe, and 46.0% as moderate. Both the area and the intensity of wind erosion had decreased from 2001 to 2010, the wind erosion area reduced 10.1%, and wind erosion intensity decreased by 29.4%. Precipitation, wind speed, population size and urbanization in rural areas, and gross domestic product of primary industry (GDP1) were the main factors influencing wind erosion. Overall, these factors accounted for 88.8% of the wind erosion. These results indicated that the decrease in wind erosion over the past decade related to the increase in precipitation and the decrease in the number of windy days, while modest urban development and optimization of the economic structure might partially reduced the level of ecological pressure, highlighting the importance of human activities in controlling wind erosion.
展开▼
机译:利用地理信息系统(GIS),基于2001年至2010年内蒙古的风速,降水,地形,土壤,植被覆盖率和土地利用数据,我们应用修正后的风蚀方程(RWEQ)模型来模拟风蚀强度。结果表明,在2010年,大约47.8 x 10(4)km(2)的面积遭受了风蚀,其中23.2%的坡度为严重,46.0%的坡度为中度。 2001年至2010年,风蚀面积和强度均有所下降,风蚀面积减少了10.1%,风蚀强度减少了29.4%。降雨,风速,农村地区的人口规模和城市化以及第一产业的国内生产总值(GDP1)是影响风蚀的主要因素。总体而言,这些因素占风蚀的88.8%。这些结果表明,过去十年来风蚀的减少与降水量的增加和大风天数的减少有关,而适度的城市发展和经济结构的优化可能会部分减轻生态压力,这突出表明了人类活动在控制风蚀中的重要性。
展开▼