Analysis of Soil and Water Loss in Fujian Province
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    Abstract:

    [Objective] Remote sensing technology was applied to monitor soil and water loss in Fujian Province, in order to provide certain scientific foundation for soil and water conservation in study area.[Methods] The quantitative computation of soil erosion in the study area based on universal soil loss equation (USLE) and remote sensing data of Landsat-8 OLI at 2014 can be inspected with the GIS spatial analysis and mathematical statistic methods to get the space distribution characteristics of soil and water loss in the field.[Results] The total area and rate of soil and water loss in 2014 of Fujian Province were 10 939.8 km2 and 8.93%, respectively. Mild erosion played a dominant role and covered 82.3% of the erosive area. Areas having intensive erosion or more intensive level mainly concentrated in Ningde, Nanping, Zhangzhou and Longyan. The erosion area of 22 key soil erosion counties was 4 786.65 km2 and the loss rate was 10.54%, accounting for 43.76% of the total erosion area in Fujian Province.[Conclusion] The total 8 954.35 square kilometers erosion area mainly located at altitude of 200~1 000 m and makes up 81.85% of the total erosion area. Slope gradient was found closely associated with soil and water loss, and soil erosion primarily happens in place of 8°~25 ° slope. The loss area on that slope was 69 871.71 km2, accounting for 57.23% of the total erosion area. The bare land and forest land are prone to soil erosion, 30.99% and 9.47% of the two lands were in erosion.

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王振平,汪小钦,曾舒娇,陈贤干,吴佐成.福建省水土流失现状分析[J].水土保持通报英文版,2017,37(5):169-175

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History
  • Received:June 28,2016
  • Revised:October 11,2016
  • Adopted:
  • Online: November 14,2017
  • Published: