XIA Mei-ling, GAO Zhi-dong, ZHOU Yan, et al. Characteristics of Sediment Yield and Its Influencing Factors on Jiagu Hillside in Ganyu County[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 11-14.
DOI:
XIA Mei-ling, GAO Zhi-dong, ZHOU Yan, et al. Characteristics of Sediment Yield and Its Influencing Factors on Jiagu Hillside in Ganyu County[J]. Bulletin of Soiland Water Conservation, 2014, 33(2): 11-14. DOI: 10.13961/j.cnki.stbctb.2014.02.003.
Characteristics of Sediment Yield and Its Influencing Factors on Jiagu Hillside in Ganyu County
The research area is located on Jiagu hillside of Lianyungang City
Jiangsu Province. Soil there is granitic gneiss gravelly sandy loam. The characteristics of sediment yield and its influencing factors were analyzed based on rainfall and soil erosion data under six kinds of typical land uses in the past 20 years. Results showed that: (1) The annual sediment yield in different land utilizations increased with the annual rainfall amount
except terrace. (2) The annual sediment yield in different landuse types had significant differences. The land use types
in order of decreasing average annual soil loss
were the slope farming area
standard area
commercial forest area
grassland area
timber forest area and terrace area. Under different landuse patterns
terrace was most effective in controlling soil erosion and contrarily
slope farming area had the largest soil erosion. (3) Under different land uses
the relationship between sediment yield on hillside and rainfall erosivity could be expressed by a power function
with a high correlation coefficient reaching extremely significant level.
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references
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