Runoff and soil loss from Pinus massoniana forest in southern China after simulated rainfall

Cao, Longxi; Liang, Yin; Wang, Yi; Lu, Hui-Zhong

doi:10.1016/j.catena.2015.02.009

Cited by 61 publications

(29 citation statements)

References 40 publications

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“…As shown in Figure 2c, the FTS soil had a larger sediment yield rate than the CS soil did although the former (FTS soil) had a lower runoff rate. Our result is in contradiction with previous studies (Giménez and Govers, 2008;Cao et al, 2015;Zhang et al, 2015). The previous studies indicated that a larger runoff rate could carry a greater amount of sediments.…”

Section: Runoff and Deposition Processes Under Fts And Cscontrasting

confidence: 99%

Effects of freeze-thaw on soil erosion processes and sediment selectivity under simulated rainfall

Wang

Ren

et al. 2017

J. Arid Land

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The freeze-thaw (FT) processes affect an area of 46.3% in China. It is essential for soil and water conservation and ecological construction to elucidate the mechanisms of the FT processes and its associated soil erosion processes. In this research, we designed the control simulation experiments to promote the understanding of FT-water combined erosion processes. The results showed that the runoff of freeze-thaw slope (FTS) decreased by 8% compared to the control slope (CS), and the total sediment yield of the FTS was 1.10 times that of the CS. The sediment yield rate from the FTS was significantly greater than that from the CS after 9 min of runoff (P<0.01). Both in FTS and CS treatments, the relationships between cumulative runoff and sediment yield can be fitted well with power functions (R 2 >0.98, P<0.01). Significant differences in the mean weight diameter (MWD) values of particles were observed for washed particles and splashed particles between the CS and the FTS treatments in the erosion process (P<0.05). The mean MWD values under CS were smaller than those under FTS for both washed and splashed particles. The ratio of the absolute value of a regression coefficient between the CS and the FTS was 1.15, being roughly correspondent with the ratio of K between the two treatments. Therefore, the parameter a of the power function between cumulative runoff and sediment yield could be an acceptable indicator for expressing the soil erodibility. In conclusion, the FTS exhibited an increase in soil erosion compared to the CS. Citation: WANG Tian, LI Peng, REN Zongping, XU Guoce, LI Zhanbin, YANG Yuanyuan, TANG Shanshan, YAO Jingwei. 2017. Effects of freeze-thaw on soil erosion processes and sediment selectivity under simulated rainfall. Journal of Arid Land, 9(2): 234-243.

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Section: Runoff and Deposition Processes Under Fts And Cscontrasting

confidence: 99%

Effects of freeze-thaw on soil erosion processes and sediment selectivity under simulated rainfall

Wang

Ren

et al. 2017

J. Arid Land

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“…Scientific studies have shown that raindrops reach the soil surface with a high kinetic energy in uniform forest areas, due to the coalescence of raindrops along the canopy (Cao et al ., 2015). These results highlight the importance of litter and of the maintenance of crop residues in planted forest areas (Geißleret al, 2012, Cao et al, 2015.…”

Section: Resultsmentioning

confidence: 99%

Soil and water losses in eucalyptus plantation and natural forest and determination of the USLE factors at a pilot sub-basin in Rio Grande do Sul, Brazil

Silva

Batista

et al. 2016

Ciênc. agrotec.

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Monitoring water erosion and the factors that control soil and water loss are essential for soil conservation planning. The objective of this study was to evaluate soil and water losses by water erosion under natural rainfall in eucalyptus plantations established in 2001 (EF2), and 2004 (EF1), native forest (NF) and bare soil (BS), during the period of 2007 to 2012; and to determine the USLE factors: rain erosivity (R), erodibility (K) of a Red Argisol and the cover-management factor (C) for EF1, EF2 and NF at a pilot sub-basin, in Eldorado do Sul, RS, Brazil. The R factor was estimated by the EI 30 index, using rainfall data from a gauging station located at the sub-basin. The soil and water losses were monitored in erosion plots, providing consistent data for the estimation of the K and C factors. Index terms: Water erosion; soil erodibility; rainfall erosivity; cover-management factor. RESUMOO monitoramento da erosão hídrica e o conhecimento dos fatores que causam perdas de solo e água são essenciais para o planejamento conservacionista do solo. Objetivou-se com esse trabalho avaliar as perdas de solo e água por erosão hídrica, sob chuva natural, em plantios de eucalipto estabelecidos em 2001 (FE2) e 2004 (FE1), floresta nativa (FN) e solo descoberto (SD), no período de 2007 a 2012; e determinar os fatores da USLE: erosividade da chuva (R), erodibilidade (K) de um Argissolo Vermelho e o fator cobertura vegetal (C) para FE1, FE2 e FN, em sub-bacia hidrográfica piloto, em Eldorado do Sul, RS. O fator R foi estimado pelo índice EI 30 , a partir de dados pluviométricos obtidos em estação climatológica instalada na sub-bacia. As perdas de solo e água foram monitoradas em parcelas experimentais, fornecendo dados consistentes para a estimativa dos fatores K e C. A sub-bacia apresentou uma erosividade média de 4. Termos para indexação: Erosão hídrica; erodibilidade do solo; erosividade da chuva; fator cobertura e manejo.

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“…Runoff significantly (α = 0.05) increased with increase in slope steepness during all rainfall intensities in un-mulched soil. However, an increase in slope steepness from 5 • to 15 • had a non-significant effect on runoff under the rainfall intensities of 120 mm·h −1 , because during higher rainfall intensities, the time required for runoff generation was too short to reflect the difference between slopes [32]. Whereas, the same slope steepness (increase from 5 • to 15 • ) with a rainfall intensity of 94 mm·h −1 had a significant effect on runoff.…”

Section: Surface Runoffmentioning

confidence: 93%

Effect of Slope, Rainfall Intensity and Mulch on Erosion and Infiltration under Simulated Rain on Purple Soil of South-Western Sichuan Province, China

Khan

Gong

Ting-xing

et al. 2016

Water

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Purple soil is widely distributed in the hilly areas of the Sichuan basin, southwest China, and is highly susceptible to water erosion. The triggering of this process is related to slope, rainfall intensity and surface cover. Therefore, this study assesses the effects of different simulated rainfall intensities with different slopes on hydrological and erosional processes in un-mulched and mulched purple soils. Results show that the sediment and water losses increased with an increase of rainfall intensity and slope steepness. Generally, the slope contribution (Sc) on water and sediment losses decreased with increasing rainfall intensity and slope steepness under both un-mulched and mulched soil. In un-mulched conditions, water losses were independent of slope steepness (Sc < 50%) during the highest rainfall intensity. However, in mulched soil, the higher contributions of slope (Sc) and rainfall (Rc) were found for water and sediment losses, respectively, i.e., >50%, except during the increase in slope steepness from 15 • to 25 • under the highest rainfall intensity (120 mm·h −1 ). The effectiveness of mulch was more pronounced in reducing sediment losses (81%-100%) compared with water losses (14%-100%). The conservation effectiveness of mulch both decreased and increased with slope steepness for water and sediment losses, respectively, under higher rainfall intensities. Water infiltration and recharge coefficient (RC) decreased with an increase of slope steepness, while with an increase in rainfall intensity, the water infiltration and RC were increased and decreased, respectively, in both un-mulched and mulched soil. On the other hand, mulched soil maintained a significantly (α = 0.05) higher infiltration capacity and RC compared to that of the un-mulched soil.

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Runoff and soil loss from Pinus massoniana forest in southern China after simulated rainfall

Cited by 61 publications

References 40 publications

Effects of freeze-thaw on soil erosion processes and sediment selectivity under simulated rainfall

Effects of freeze-thaw on soil erosion processes and sediment selectivity under simulated rainfall

Soil and water losses in eucalyptus plantation and natural forest and determination of the USLE factors at a pilot sub-basin in Rio Grande do Sul, Brazil

Effect of Slope, Rainfall Intensity and Mulch on Erosion and Infiltration under Simulated Rain on Purple Soil of South-Western Sichuan Province, China

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