CHANGE ANALYSIS ON SOIL EROSION OF FUJIAN PROVINCE FROM 1990 TO 2015
- 1Key Laboratory of Spatial Data Mining & Information Sharing of Ministry of Education, Satellite Application Center of Fujian Province, Fuzhou University, Fuzhou 350116, China
- 2Soil and Water Conservation Experimental Station of Fujian Province, Fuzhou 350003, China
Keywords: Soil Erosion, Change Analysis, Spatial Pattern, Temporal Change, USLE Model, Fujian Province
Abstract. Soil erosion is one of major environment problems in the world, and China is one of the most serious soil erosion country. In this paper, Fujian province was used as a study area for its typical red soil region. Based on USLE model, the soil erosion modulus in 1990 and 2015 were calculated and turned to soil erosion intensity. The soil erosion distribution trend in Fujian province was decrease from south-east coastal zone to north-west inland region. In soil erosion areas, the main erosion type was light level with about 80 %, and the soil erosion levels above serious type were mainly sporadic distribution with less than 10 %. The soil erosion improved for the past 25 years. The areas of different erosion types all decreased, and the total erosion area reduced by 26.59 %. The improvement area mainly located in north-east, south and west region. The aggravation area mainly located in the north and some middle hilly regions. The impact of human activities is more significant for erosion control.