[1]ZHANG Fang-ting,XIONG Kang-ning,CHEN Hu,et al.Soil Erosion Factors and Eco-benefit Evaluation in the Karst Plateau-Mountain Region—with a Special Reference to Shiqiao Catchment of Bijie in Guizhou[J].Research of Soil and Water Conservation,2009,16(05):88-92,97.
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Soil Erosion Factors and Eco-benefit Evaluation in the Karst Plateau-Mountain Region—with a Special Reference to Shiqiao Catchment of Bijie in Guizhou
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 05
Page number:
88-92,97
Column:
Public date:
2009-10-20
- Title:
- Soil Erosion Factors and Eco-benefit Evaluation in the Karst Plateau-Mountain Region—with a Special Reference to Shiqiao Catchment of Bijie in Guizhou
- Keywords:
- Karst; Plateau-Mountain region; soil erosion; eco-benefit; Guizhou
- CLC:
- S157;P642.25
- DOI:
- -
- Abstract:
- To further understand influencing factors of soil erosion and its ecological benefits in Karst region,we took Shiqiao catchment of Bijie city in Guizhou as a study area,which was a representative rocky-desertification area in Karst plateau.Meanwhile,the soil physical properties and vegetation cover factors were researched in the area.And the results showed as following: Firstly,soil mechanical composition had a direct impact on soil infiltration capacity in the run-off area,and water stability displayed distinct differences in various land-use types.Secondly,soil erosion caused that soil bulk density value was low and soil structure was relatively loose.And the increasing sequence of which was: shrub and grasslands land,(slopes land),returning farmland,forest land,gentle slope land.Thirdly,it showed a strong correlation between the number of vegetation cover and the changes in soil erosion.And when an equivalent reached 0.05,correlation coefficient r equivalent was 0.779 and 0.853 respectively.That was to say,the higher the vegetation cover showed,the weaker soil erosion was.In conclusion,the factors on soil erosion in Karst plateau had a direct and sensitive correlative association with the soil physical characteristics.And the best way to reduce soil erosion was vegetation restoration under human disturbance controlled,which can make the eco-efficiency maximized.In a word,the research was bound to play a positive role in the governance of soil erosion in the other similar Karst regions,besides,it can provide a scientific basis for the work of soil and water conservation in Karst mountainous areas.
- References:
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Last Update:
1900-01-01