[1]ZHU Ruipeng,LIU Dianjun,ZHANG Shihao,et al.Characteristics of Runoff and Sediment Yield in Different Land Use Types in Hilly and Gully Region of the Loess Plateau[J].Research of Soil and Water Conservation,2022,29(04):10-17.
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Characteristics of Runoff and Sediment Yield in Different Land Use Types in Hilly and Gully Region of the Loess Plateau
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 04
Page number:
10-17
Column:
Public date:
2022-06-20
- Title:
- Characteristics of Runoff and Sediment Yield in Different Land Use Types in Hilly and Gully Region of the Loess Plateau
- Keywords:
- soil and water conservation; slope runoff; Loess Plateau; vegetation restoration; runoff reduction benefit; sediment reduction benefit
- CLC:
- S157.2
- DOI:
- -
- Abstract:
- In order to study the different soil and water conservation benefits of different land use types in the Loess hilly watershed, Getuodian watershed which is located in the Inner Mongolia section of the middle reaches of the Yellow River was used as study site. Soil erosion characteristics of six land use types, including forestland(pinus tabuliformis), sea-buckthorn(Hippophae rhamnoides), artificial grassland(Medicago arabica), natural grassland(Stipa capillata)and farmland(Zea mays)were analyzed based on long term in-situ field monitoring. Meanwhile, the bare land was used as control, the runoff coefficient and the ratio of erosion modulus to bare land were calculated as the benefits of runoff and sediment reduction of different land use types. Based on the long-term monitoring data, the results showed that the precipitation during the study period(2014—2017)concentrated from June to September; runoff volume and sediment amount exhibited significant differences among different land use types(p<0.05); forestland had the lowest runoff volume [(4.55±3.25)L] whereas bare land had the highest [(412.73±97.09)L]; the results of sediment amount are consistent with runoff, bare land generated the highest sediment amount with(87.36±15.37)g/L, and forestland yielded the lowest sediment amount with(0.8±0.38)g/L; the runoff coefficient and erosion modulus of different land use types showed significantly different; the highest and lowest runoff coefficients were observed in farmland and forest forestland, which were 12.26%±1.27% and 0.09%±0.06%, respectively; the runoff coefficients of different land use types decreased in the order: farmland>natural grassland>artificial grassland>sea-buckthorn>forestland; similarly, the erosion modulus of forestland showed the lowest [(0.002±0.001)kg/(m2·a)] whereas farmland had the highest [(1.49±0.71)kg/(m2·a)]; the erosion modulus was consistent with the runoff coefficient. These results show that vegetation restoration can prevent soil erosion and the different land use types have different soil and water conservation benefits. The benefits of different land use types increased in the order: natural grassland<artificial grassland<sea-buckthorn<forestland. These results can provide the basis for the vegetation restoration and comprehensive watershed management in the Inner Mongolia section of the middle reaches of the Yellow River.
- References:
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Last Update:
2022-06-20