Effects of rainfall and the slope gradient on the soil and water loss in a purple soil area

https://doi.org/10.17221/45/2022-SWRCitation:

Zhang X.Y., Zhu Q.D., Sang J., Ding X.W. (2022): Effects of rainfall and the slope gradient on the soil and water loss in a purple soil area. Soil & Water Res., 17: 232–242.

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Soil and water losses in purple soil area is becoming an increasingly severe problem, bringing enormous challenges to environmental protection in rural areas. In this study, simulated rainfall experiments were conducted to analyse the effects of rainfall and the slope conditions on the soil and water loss. Purple soil from a typical slope in the Beibei District of Chongqing was selected as the experimental soil. Twenty rainfall scenarios with varying rainfall intensities and slope conditions were created in the simulation. The results indicate that the runoff initiation time shortened with an increased rainfall intensity and slope gradient. There was a logarithmic relationship between the effect of the rainfall amount on both the runoff intensity and sediment yield intensity. Generally, both the runoff and sediment yield showed a positive linear relationship with the rainfall intensity under different slope gradient conditions. In terms of the same rainfall intensity, both the runoff intensity and sediment yield intensity increased with the slope. Furthermore, a critical slope gradient for the soil and water loss was found between 20° and 25°. This study aimed to provide a reference for soil and water conservation research in a purple soil area.

References:
Belayneh M., Yirgu T., Tsegaye D. (2020): Runoff and soil loss responses of cultivated land managed with graded soil bunds of different ages in the Upper Blue Nile basin, Ethiopia. Ecological Processes, 9: 1–18. https://doi.org/10.1186/s13717-020-00270-5
 
Cai E., Jing Y., Liu Y., Yin C., Gao Y., Wei J. (2018): Spatial-temporal patterns and driving forces of ecological-living-production land in Hubei Province, Central China. Sustainability, 10: 66. https://doi.org/10.3390/su10010066
 
Ding X., Xue Y., Lin M., Liu Y. (2017): Effects of precipitation and topography on total phosphorus loss from purple soil. Water, 9: 315. https://doi.org/10.3390/w9050315
 
He J.J., Sun L.Y., Gong H.L., Cai Q.G. (2017): Laboratory studies on the influence of rainfall pattern on rill erosion and its runoff and sediment characteristics. Land Degradation & Development, 28: 1615–1625.
 
He S., Gong Y., Zheng Z., Luo Z., Tan B., Zhang Y. (2022): Effects of rainfall intensities and slope gradients on nitrogen loss at the seedling stage of maize (Zea mays L.) in the purple soil regions of China. International Journal of Agricultural and Biological Engineering, 15: 142–148. https://doi.org/10.25165/j.ijabe.20221502.6015
 
Hua K., Zhu B., Wang X. (2014): Dissolved organic carbon loss fluxes through runoff and sediment on sloping upland of purple soil in the Sichuan Basin. Nutrient Cycling in Agroecosystems, 98: 125–135. https://doi.org/10.1007/s10705-014-9601-5
 
Huang J., Wu P., Zhao X. (2013): Effects of rainfall intensity, underlying surface and slope gradient on soil infiltration under simulated rainfall experiments. Catena, 104: 93–102. https://doi.org/10.1016/j.catena.2012.10.013
 
Jiang F., Zhan Z., Chen J., Lin J., Wang M.K., Ge H., Huang Y. (2018): Rill erosion processes on a steep colluvial deposit slope under heavy rainfall in flume experiments with artificial rain. Catena, 169: 46–58. https://doi.org/10.1016/j.catena.2018.05.023
 
Jin H.-F., Shi D.-M., Zeng X.-Y., Wang S.-S., Duan T., Lou Y.-B. (2019): Mechanisms of root-soil reinforcement in bio-embankments of sloping farmland in the purple hilly area, China. Journal of Mountain Science, 16: 2285–2298. https://doi.org/10.1007/s11629-019-5476-x
 
Jourgholami M., Karami S., Tavankar F., Lo Monaco A., Picchio R. (2021): Effects of slope gradient on runoff and sediment yield on machine-induced compacted soil in temperate forests. Forests, 12: 49. https://doi.org/10.3390/f12010049
 
Larsen A., Robin V., Heckmann T., Fülling A., Larsen J.R., Bork H.-R. (2016): The influence of historic land-use changes on hillslope erosion and sediment redistribution. The Holocene, 26: 1248–1261. https://doi.org/10.1177/0959683616638420
 
Lei W., Dong H., Chen P., Lv H., Fan L., Mei G. (2020): Study on runoff and infiltration for expansive soil slopes in simulated rainfall. Water, 12: 222. https://doi.org/10.3390/w12010222
 
Li S., He F., Zhang X. (2016): A spatially explicit reconstruction of cropland cover in China from 1661 to 1996. Regional Environmental Change, 16: 417–428. https://doi.org/10.1007/s10113-014-0751-4
 
Li Z.-B., Li P., Han J.-G., Li M. (2009): Sediment flow behavior in agro-watersheds of the purple soil region in China under different storm types and spatial scales. Soil and Tillage Research, 105: 285–291. https://doi.org/10.1016/j.still.2009.04.002
 
Long H., Heilig G., Wang J., Li X., Luo M., Wu X., Zhang M. (2006): Land use and soil erosion in the upper reaches of the Yangtze River: Some socio‐economic considerations on China’s Grain‐for‐Green Programme. Land Degradation & Development, 17: 589–603.
 
Maltsev K., Yermolaev O. (2019): Potential soil loss from erosion on arable lands in the European part of Russia. Eurasian Soil Science, 52: 1588–1597. https://doi.org/10.1134/S106422931912010X
 
Mishra S., Chaudhary A., Shrestha R.K., Pandey A., Lal M. (2014): Experimental verification of the effect of slope and land use on SCS runoff curve number. Water Resources Management, 28: 3407–3416. https://doi.org/10.1007/s11269-014-0582-6
 
Nourani V., Khanghah T., Baghanam A.H. (2015): Application of entropy concept for input selection of wavelet-ANN based rainfall-runoff modeling. Journal of Environmental Informatics, 26: 52–70 https://doi.org/10.3808/jei.201500309
 
Ouyang W., Li Z., Liu J., Guo J., Fang F., Xiao Y., Lu L. (2017): Inventory of apparent nitrogen and phosphorus balance and risk of potential pollution in typical sloping cropland of purple soil in China – A case study in the Three Gorges Reservoir region. Ecological Engineering, 106: 620–628. https://doi.org/10.1016/j.ecoleng.2017.06.044
 
Qian F., Dong L., Liu J., Sun B., Liu H., Huang J., Li H. (2020): Equations for predicting interrill erosion on steep slopes in the Three Gorges Reservoir, China. Journal of Hydrology and Hydromechanics, 68: 51–59. https://doi.org/10.2478/johh-2019-0024
 
Qian T., Zhao P., Zhang F., Bao X. (2015): Rainy-season precipitation over the Sichuan basin and adjacent regions in southwestern China. Monthly Weather Review, 143: 383–394. https://doi.org/10.1175/MWR-D-13-00158.1
 
Shen H., Zheng F., Wen L., Han Y., Hu W. (2016): Impacts of rainfall intensity and slope gradient on rill erosion processes at loessial hillslope. Soil and Tillage Research, 155: 429–436. https://doi.org/10.1016/j.still.2015.09.011
 
Shojaei S., Kalantari Z., Rodrigo-Comino J. (2020): Prediction of factors affecting activation of soil erosion by mathematical modeling at pedon scale under laboratory conditions. Scientific Reports, 10: 1–12. https://doi.org/10.1038/s41598-020-76926-1
 
Taye G., Poesen J., Wesemael B.V., Vanmaercke M., Teka D., Deckers J., Goosse T., Maetens W., Nyssen J., Hallet V. (2013): Effects of land use, slope gradient, and soil and water conservation structures on runoff and soil loss in semi-arid Northern Ethiopia. Physical Geography, 34: 236–259. https://doi.org/10.1080/02723646.2013.832098
 
Wang L., Zhang G., Wang X., Zhu P. (2019): Soil loss: Effect of plant litter incorporation rate under simulated rainfall conditions. Land Degradation & Development, 30: 1193–1203.
 
Wei J., Shi B., Li J., Li S., He X. (2018): Shear strength of purple soil bunds under different soil water contents and dry densities: A case study in the Three Gorges Reservoir Area, China. Catena, 166: 124–133. https://doi.org/10.1016/j.catena.2018.03.021
 
Wu L., Peng M., Qiao S., Ma X.-Y. (2018): Effects of rainfall intensity and slope gradient on runoff and sediment yield characteristics of bare loess soil. Environmental Science and Pollution Research, 25: 3480–3487. https://doi.org/10.1007/s11356-017-0713-8
 
Zambon N., Johannsen L.L., Strauss P., Dostal T., Zumr D., Cochrane T.A., Klik A. (2021): Splash erosion affected by initial soil moisture and surface conditions under simulated rainfall. Catena, 196: 104827. https://doi.org/10.1016/j.catena.2020.104827
 
Zambon N., Johannsen L.L., Strauss P., Dostal T., Zumr D., Neumann M., Cochrane T.A., Klik A. (2020): Rainfall parameters affecting splash erosion under natural conditions. Applied Sciences, 10: 4103. https://doi.org/10.3390/app10124103
 
Zhang F., Yang M., Li B., Li Z., Shi W. (2017): Effects of slope gradient on hydro-erosional processes on an aeolian sand-covered loess slope under simulated rainfall. Journal of Hydrology, 553: 447–456. https://doi.org/10.1016/j.jhydrol.2017.08.019
 
Zhang J., Zhou L., Ma R., Jia Y., Yang F., Zhou H., Cao X. (2019): Influence of soil moisture content and soil and water conservation measures on time to runoff initiation under different rainfall intensities. Catena, 182: 104172. https://doi.org/10.1016/j.catena.2019.104172
 
Zhang X., Hu M., Guo X., Yang H., Zhang Z., Zhang K. (2018): Effects of topographic factors on runoff and soil loss in Southwest China. Catena, 160: 394–402. https://doi.org/10.1016/j.catena.2017.10.013
 
Zhang X., Song J., Wang Y., Deng W., Liu Y. (2021): Effects of land use on slope runoff and soil loss in the Loess Plateau of China: A meta-analysis. Science of The Total Environment, 755: 142418. https://doi.org/10.1016/j.scitotenv.2020.142418
 
Zhou M., Zhu B., Brüggemann N., Bergmann J., Wang Y., Butterbach-Bahl K. (2014): N2O and CH4 emissions, and NO3− leaching on a crop-yield basis from a subtropical rain-fed wheat–maize rotation in response to different types of nitrogen fertilizer. Ecosystems, 17: 286–301. https://doi.org/10.1007/s10021-013-9723-7
 
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