Soil Erosion Dynamic Detection Based on Remote Sense and GIS Techniques

Abstract

Considering the shortcomings of heavy workload, time-consuming and laborious in common soil erosion observation and experimental methods, Jixian district in Tianjin was selected as the research area in this paper. The multi-factor comprehensive method in the second national soil erosion remote sensing survey is adopted. This paper uses the TM data of 2004 and Landsat-8 data and DEM data in 2015 of this region, according to the Soil Erosion Classification and Grading Standard (SL 190-2007) issued by the Ministry of Water Resources. The soil erosion intensity grading map of two periods in Jixian was obtained and the annual average erosion modulus was calculated. Based on the TM images in 2004 and Landsat-8 data in 2015, DEM data were employed in the study. The results showed that the soil erosion in Jixian district was mildly eroded in the recent ten years, although the average annual erosion modulus has declined, it is still necessary to pay attention to the areas above the strength erosion.