Analysis On Present Situation Of Desertification And Desertification In Xing'an League Monitoring Area Based On 3S Technology

Based on the data collected from a large number of Xing'an monitoring areas,this paper has obtained the technical method of combining the ground investigation and verification with high resolution remote sensing image data to obtain the desertified desertified land area of Xing'an monitoring area,and combined with the natural The situation of desertification desertification in the monitoring area of Xing'an League,and the status of desertification desertification in the monitoring area of Xing'an League,and the data of desertification desertification in this monitoring area were compared with thos in 2009 Four desertification desertification monitoring data to do dynamic comparison,the area of desertification desertification land in the area,the desertification desertificatico type and the degree of dynamic changes.Combined with the local physical and geographical factors and socio-economic factors,to reveal the cause of desertification desertification in Xing'an monitoring area,so as to predict the future development trenddesertified land and put forward the local suggestions for combating desertificati(?)desertification.Through this survey,the conclusions are:(1)The total area of desertification monitoring area in Xing'an is 409765.22hm The desertification of the whole monitoring area is only distributed in wind erosion and salinization.The area is 213344.32hm2,which accounts for 78.54%of the total area of the monitoring.The land area is 58310.12hm2,accounting for 21.46%of the total area of the monitoring,non-desertification land area of 138110.78hm2,accounting for 33.70%of the total land area of desertification monitoring.(2)The area of desertification monitoring area of Xing'an League is 1772111.04hm2,and the area of sandy desertification is 410635.12hm2,accounting for 23.17%of the total area of monitoring area.The land with obvious desertification is an early warning between non-desertified land and desertified land.The total area of 162865.36hm2,accounting for 9.19%of the total area of the monitoring area,non-desertification of the total area of 1198610.56hm2 land,accounting for 66.45%of the total area of the monitoring area,(3)Compared with the land desertification and desertification data of Hing'an monitoring area in 2009,the area of desertification land increased from 252637.46hm2 to 271654.44hm2 from 2009 to 2014,and the desertification land in the monitoring area was 61.65%of the total land area Increase to the current 66.30%.5 years increased 19016.98hm2 an average annual increase of 3803.40hm2,annual growth rate of 0.02%.in general,the area of desertification land in the monitoring area shows an increasing trend,but the land desertification has been slowed down.(4)The total erea of desertified land in the monitering are of Xing'an is 410638.81hm2.Compared with 2009,the desertification land is reduced by 1735.89hm2,the annual decrease is 347.18hm2 and the reversal rate is 0.08%.