[1]CHEN Fang,GAO Baolin,LI Jie,et al.Status Analysis and Evaluation of Cultivability for Sloping Farmland in Hubei Province[J].Research of Soil and Water Conservation,2023,30(01):418-422,429.[doi:10.13869/j.cnki.rswc.2023.01.034]
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Status Analysis and Evaluation of Cultivability for Sloping Farmland in Hubei Province
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 01
Page number:
418-422,429
Column:
Public date:
2023-01-10
- Title:
- Status Analysis and Evaluation of Cultivability for Sloping Farmland in Hubei Province
- CLC:
- F323.21
- DOI:
- 10.13869/j.cnki.rswc.2023.01.034
- Abstract:
- Sloping farmland is an important part of farmland resources, as well as a source of soil erosion and a key area for soil and water conservation. In order to explore the current status of sloping farmland resources and their suitability for cultivation in Hubei Province, GIS technology was applied to build a database of sloping farmland in Hubei Province,which included land slope, soil erosion, soil profile configuration and its physiochemical characteristics. Land slope, soil thickness, soil texture, soil pH and soil erosion intensity degree were selected as key representative indicators. The suitability of slope farmland in Hubei Province was evaluated by ‘limiting factor method'. The results show that the total area of slope farmland in Hubei Province was 9 438.64 km2, accounting for 18.87% of the total farmland area; the total area of non-cultivable slope farmland in Hubei Province was 2 178.36 km2, accounting for 23.08% of the existing slope farmland area; the high gravel content and slope were the main factors that made the slope farmland unfit for cultivation, and the total area of slope farmland with gravel content>15% was 1 205.72 km2, the total area of sloping farmland with a slope≥25° was 1 097.32 km2; secondly, the dominant factor that was not suitable for cultivation was that the soil is too acidic, and the area of slope farmland that was not suitable for cultivation is 669.60 km2 due to the pH value≤4.5; the areas of slope farmland unsuitable for cultivation caused by serious soil erosion(extremely strong erosion gradation or more severe)and shallow soil layer(soil layer thickness < 30 cm)were 336.48 km2 and 67.55 km2, respectively. This study can provide scientific basis and decision support for formulating soil erosion control strategies for slope farmland according to local conditions and guiding the adjustment of land use structure of slope farmland.
- References:
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Last Update:
2023-01-10