[1]GUO Geng,DING Mingming,QIAN Zhou,et al.Effect of Land Use Change on Soil Erosion in Nanjing from 1986 to 2013[J].Research of Soil and Water Conservation,2022,29(05):108-116.
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Effect of Land Use Change on Soil Erosion in Nanjing from 1986 to 2013
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 05
Page number:
108-116
Column:
Public date:
2022-08-20
- Title:
- Effect of Land Use Change on Soil Erosion in Nanjing from 1986 to 2013
- Keywords:
- GIS; RUSLE; the change of land use/cover; soil erosion
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- In order to understand the response of land use change on soil erosion in Nanjing, we analyzed the characteristics of temporal and spatial dynamics of land use/cover in Nanjing from 1986 to 2013 using GIS and statistical methods. The meteorological, soil, topographic, remote sensing and other multi-source data were used to quantitatively assess the spatial and temporal change characteristics of soil erosion in Nanjing using RUSLE model. The results show that:(1)soil erosion showed an initial increasing and then decreasing trend; from 1986 to 1996, the eroded area increased from 324.11 km2 to 457.06 km2, which increased by 132.95 km2; from 1996 to 2013, the eroded area decreased from 457.06 km2 to 150.11 km2, with the area ratio reducing from 7.46% to 2.45%; spatial distribution results showed that soil erosion mainly occurred in hilly mountainous areas of Nanjing where production and construction activities were more frequent;(2)the eroded area of different grades and the corresponding erosion amount were obviously inverted, and thus higher-grade erosion areas should be the key treatment regions;(3)land use type was one of the factors affecting soil erosion in Nanjing, and more than 87% of the dynamic changes of soil erosion concentrated in forestland and cultivated land; it is worth noting that changes in water bodies, residential and construction sites and other land use had no significant effects on soil erosion, while variations in cultivated land had significant negative impact on soil erosion, and the changes in forestland and grassland had both positive and negative impacts on soil erosion, with positive effects predominating; this was mainly due to the conversion of woodland, cultivated land, residential land, construction site and water, with their main effects varying from period to period. Overall, the results of this study can provide scientific reference and theoretical basis for land resource allocation and soil erosion control in Nanjing.
- References:
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Last Update:
2022-08-20