[1]LAI Huayan,HUANG Boqiang,WU Pengfei.Analysis of the Main Imapct Factors on Soil Erosion in Island City—An Example of Pingtan Island, Fujian Province[J].Research of Soil and Water Conservation,2017,24(01):12-17.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
24
Number of periods:
2017 01
Page number:
12-17
Column:
Public date:
2017-02-28
- Title:
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Analysis of the Main Imapct Factors on Soil Erosion in Island City—An Example of Pingtan Island, Fujian Province
- Author(s):
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LAI Huayan1,2, HUANG Boqiang3, WU Pengfei1,2
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1. College of Forestry, Fujian Agricultural and Forest University, Fuzhou 350002, China;
2. Coinnovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China;
3. Collaborative Innovation Center for Peaceful Development of Cross-strait Relations, Xiamen University, Xiamen, Fujian 361005, China
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- Keywords:
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Universal Soil Loss Equation; geography information system; soil erosion; Pingtan Island
- CLC:
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S157
- DOI:
-
-
- Abstract:
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In order to illuminate the status of soil and water loss in the process of development and utilization of urban land, the Pingtan Island, a typical island in Southeast China, was selected as the study site. The soil erosion of Pingtan Island in 1990 and 2013 was evaluated by using geography information system (GIS) and Universal Soil Loss Equation (USLE), land use and soil erosion maps of the study area were generated based on the factors such as rainfall, vegetation, soil and topography. The results showed that annual average soil erosion amounts in 1990 and 2013 were 1 674.64 t/ (km2·a) and 735 t/ (km2·a), respectively, both of which were in the category of light degree erosion; from 1990 to 2013, the proportion of light degree erosion increased from 72.38% to 79.31%, while all the proportions of other degrees declined. The most contribution to the erosion was in the intensity erosion area or more severe ones in 1990 and 2013. Land use change, the rainfall and slope gradients significantly affected soil erosion. The results could provide evidence for the economic development and construction, rational land use of Pingtan Island, and make the best management practices of soil and water conservation in the process of urbanization for other typical islands.