Trend Analysis Of Time And Space Change Of Soil Erosion In Hubei Province In From 2005 To 2015

Hubei Province is located in the middle of China,in the middle reaches of the Yangtze River,with various types of landforms,including mountains,hills,hills and plains;the terrain is surrounded by mountains on three sides and the middle is low;the province has developed inner diameter and dense lakes.Due to the subtropical monsoon climate,the precipitation in Hubei Province has obvious seasonal distribution,and the precipitation is large and concentrated,which easily leads to soil erosion.The existing soil erosion area of 35517.50 square kilometers in Hubei Province is awaiting treatment,and the soil erosion area accounts for 19.10%of the national land area.The governance task is heavy.This paper makes a systematic analysis of the soil erosion dynamics of Hubei Province and the 17 urban districts under the jurisdiction of the province from 2005 to 2015.The results show that:(1)In the past 10 years,the area of soil erosion in Hubei Province has continued to decline,with a sharp decline in 2005-2011 and a slowdown in 2011-2015.The area of soil erosion in 2005-2011 decreased from 55,873.93 square kilometers to 36,903.02 square kilometers,with a reduction of 33.59%.The average annual reduction of soil erosion area reached 23,161.82 square kilometers,indicating that soil erosion control has achieved remarkable results during this period.(2)Judging from the change of soil erosion grade area,the soil erosion in Hubei Province is mainly caused by mild loss.The focus of soil erosion control in the past 10 years is also the lightly lost area,and the lightly lost area shows a continuous downward trend.After a significant decline in the 2005-2011 period,the moderate grade area increased between 2011 and 2015,mainly due to the intensification of strong,extremely intense and severe grades,and the high and low grades of soil erosion.It also indicates that the soil erosion situation has been treated and the ecological environment has been improved in the region;while the rate of decline of the soil erosion area of the strong and above grades is slow,the area of soil erosion has been decreasing during the 10 years from 2005 to 2015.It also shows that the soil erosion situation has not spread to a more serious direction.(3)In the 10 years from 2005 to 2015,the administrative units of the province have maintained a downward trend overall,indicating that the soil and water conservation work in various urban areas has been steadily advanced,and soil erosion is gradually being improved.In short,through the management of sloping farmland,the comprehensive management of small watersheds,the comprehensive management of ecological clean small watersheds and the control of rocky desertification,the effect of soil erosion control in most areas of our province is remarkable.The treatment of soil erosion not only improves the ecological environment,but also drives The local economic development has improved the lives of residents.