%0 Journal Article
%A LIANG Wen-guang
%A QIAN Jun
%A GAO Shi-pei
%A WANG Dong-mei
%A XU Shan-shan
%A YANG Yin
%A WANG Yi-hong
%A KUANG Man-man
%T Quantitative Monitoring of Soil Erosion Loss in Nanjing by RS, GPS, and GIS
%D 2018
%R 10.11988/ckyyb.20170089
%J Journal of Yangtze River Scientific Research Institute
%P 51-56
%V 35
%N 7
%X A set of novel methods quantitatively monitoring soil erosion loss is employed to calculate the soil erosion loss in Nanjing City in 2011-2015 according to data of rainfall, land use, soil and terrain, and environmental satellite. Results revealed that: (1) From 2011 to 2015, the average total amount of soil erosion loss in Nanjing is 2.014 2 million tons, among which above light level (above level II) soil erosion is 1.667 7 million tons, occupying an area of 515.75 km<sup>2</sup> and accounting for 82.8% of the total amount; soil erosion above level II remains a focus of control work. (2) With rainfall erosivity <i>R<sub>i</sub></i>  as a decisive factor, the most severe soil erosion happened in 2015, while the slightest in 2013. (3) The five-year average amount of extremely severe (level VI) and severe (level V) soil erosion ranks top among the grading. (4) Compared with ten-year average in 2001-2010, the area of slight (level I) soil erosion in 2011-2015 increased by 7.6%, while the area of erosion above level II reduced by 42.5%, with the amount cut by 23.7%; the decrease in <i>CP</i>(vegetation cover and preservation measure) is the main cause of such mitigation in 2011-2015. (5) In 2011-2015, the decrease in area and amount of level IV and V alleviated; while the area and amount of level VI exacerbated due to large value of rainfall erosivity <i>R<sub>i</sub></i> (five-year average in 2011-2015). The research achievements offer important fundamental data support and scientific basis for the soil and water conservancy planning and soil erosion control in Nanjing City.
%U http://ckyyb.crsri.cn/EN/10.11988/ckyyb.20170089