[1]LI Rui,ZHANG Chi,GU Zaike,et al.Response of Soil Erosion to Main Influencing Factors on Hillslope of Typical Watersheds in Guizhou Karst Area[J].Research of Soil and Water Conservation,2018,25(03):1-5.
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Response of Soil Erosion to Main Influencing Factors on Hillslope of Typical Watersheds in Guizhou Karst Area
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 03
Page number:
1-5
Column:
Public date:
2018-04-10
- Title:
- Response of Soil Erosion to Main Influencing Factors on Hillslope of Typical Watersheds in Guizhou Karst Area
- Keywords:
- karst; soil erosion on hillslope; response; influencing factors
- CLC:
- S157.1
- DOI:
- -
- Abstract:
- To reveal the response of soil erosion on hillslope to land use patterns, terrain and rainfall in Guizhou karst area, Yangjichong small watershed in Longli, Shiqiao small watershed in Bijie were took as the research areas to carry out the experiment of soil erosion. The results showed that among the three land use patterns in Yangjichong small watershed, soil erosion modulus of abandoned land was the lowest, and merely 4.7 t/km2 in 2014, and it was 91.3 t/km2 on the forestland due to the rapid vegetation restoration, it was the highest on the farmland, and reached to 629.5 t/km2. Differentia tests showed that the soil erosion rates on forestland, abandoned land and farmland were significantly different at 0.05 level (p<0.05). The effect of terrain factor on soil erosion showed that the soil erosion amount increased with the increase of slope length, but the effect of slope length on soil erosion was not significant (p>0.05). The analysis on correlation between rainfall and soil erosion indicated that soil erosion was positively correlated with rainfall at 0.01 level (p<0.01), and the quadratic polynomial fitting curve can perfectly describe the relation between soil erosion and rainfall (R2>0.5).
- References:
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1900-01-01