[1]HEI Zhe,WANG Fei,HAN Jianqiao,et al.Change in Vegetation Cover and Soil Erosion in Baiyushan Hilly Area Since the Grain for Green Project[J].Research of Soil and Water Conservation,2020,27(04):39-46.
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Change in Vegetation Cover and Soil Erosion in Baiyushan Hilly Area Since the Grain for Green Project
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 04
Page number:
39-46
Column:
目次
Public date:
2020-06-20
- Title:
- Change in Vegetation Cover and Soil Erosion in Baiyushan Hilly Area Since the Grain for Green Project
- Keywords:
- vegetation cover change; NDVI; soil erosion risk; Baiyushan Mountain area; Grain-for-Green Project
- CLC:
- Q948.1; S157
- DOI:
- -
- Abstract:
- In order to explore the characteristics of soil erosion in Baiyushan Mountain area, based on the datasets of MODIS-NDVI(Normalized Difference Vegetation Index), Landsat, DEM and land use data, we analyzed the regional vegetation cover change in Baiyushan Mountain area from the initiation of the Grain-for-Green Project of China in 2000 till 2018, and assessed the soil erosion intensity with information of slope and vegetation coverage. The results are shown as follows.(1)The annual average NDVI of the Baiyushan Mountain area had increased signicificantly(p<0.01)with a rate of 0.065/decade over the study period.(2)The regional distribution of NDVI varied obviously spatially, and the vegetation cover in Wuqi was high but that in the western of Dingbian and the central of Jingbian were quite poor; the vegetation cover in the study area reached a relative high level at the altitude ranges of 1 250～1 400 m and the slope ranges of 50°～56°,and the vegetation cover on shady slopes was much greater than that on the slopes to southern part.(3)The areas with vegetation degradation and the vegetation recovering accounted for 3.18% and 64.20% of the total area, respectively, and the vegetation cover increased obviously during the whole period.(4)The areas suffering mild erosion and moderate erosion reduced, but the areas with intensive erosion, strong erosion and severe erosion increased.(5)The area with soil erosion decline accounted for 51.3% of the total area, mainly occurred in Wuqi County, and the main reason for erosion decline is the reduction of agricultural land area on the slopes.
- References:
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Last Update:
2020-07-09