Soil erosion resistance of “Grain for Green” vegetation types under extreme rainfall conditions on the Loess Plateau, China

Wang, Zhijie; Jiao, Juying; Rayburg, Scott; Wang, Qiaoli; Shi, Yuan

doi:10.1016/j.catena.2016.02.025

Cited by 137 publications

(70 citation statements)

References 37 publications

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“…The thick, loose topsoil created by tillage should wash away more easily during extreme rainfall events. Moreover, the change in dominant sediment sources from bare ground and forests in the front area to croplands and bare ground in the back area of the dam field in all deposition layers indicated that bare ground and croplands were highly susceptible to erosion (Wang et al ., ). The high contribution of bare ground and croplands to sediment deposition was closely linked because erosion from bare ground correlated closely to land use types and agricultural activities in croplands, especially unsustainable activities, which contribute greatly to gully erosion (Castilloa & Gómezb, ; West et al ., ).…”

Section: Discussionmentioning

confidence: 83%

“…Thus, the soil in the artificial forest located on steep slopes with little additional vegetation to protect the soil eroded first during the rainfall. The relatively strong erosion on sloping orchards provided evidence for this conclusion (Wang et al ., ). The remaining croplands were located on relatively gentle slopes and were covered by crops during the rainy season.…”

Section: Discussionmentioning

confidence: 97%

“…Severe erosion caused by extreme rainstorm events has occurred time after time on the Loess Plateau (Li et al ., ; Wang et al ., ). To provide information on this relatively unstudied phenomenon, we used a single extreme rainstorm event of a long duration and recurrence interval as an example and analysed the sediment sources and yields from the event.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fingerprinting Sediment Sources After an Extreme Rainstorm Event in a Small Catchment on the Loess Plateau, PR China

et al. 2017

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Soil erosion is a severe problem on China's Loess Plateau due to its fine‐grained soils and the increasing frequency of extreme rainfall events. Accordingly, this study used a 100‐year frequency rainstorm dataset to analyse sediment deposition and sources in a 27‐km2 catchment with a dam field area of 0·14 km2 based on the hypothesis that sediments were intercepted by the dam (before collapse) during the rainstorm event and deposited in the dam field. This study applied composite fingerprinting, which revealed the sediment source contributions and estimated sediment deposition. Sediment deposition (626·4 kg m−2) decreased linearly or exponentially with increasing distance from the dam. Composite fingerprints based on the optimal parameters revealed relative sediment contributions of 44·1% ± 25·5%, 37·7% ± 35·0%, 9·0% ± 11·4% and 9·2% ± 11·5% by bare ground, croplands, grassland and forests, respectively. The 5‐year cumulative sediment deposition from normal rainfall was 2·3 × 104 t less than the extreme rainstorm. Bare grounds and croplands were the dominant sediment sources following both the extreme rainstorm and normal erosive rainfall events but varied at different areas of the check‐dam. Erosion patterns and start times depended on land use type, thereby affecting sediment profiles in the dam field. Furthermore, severe erosion from bare ground that were all gully slopes and gully walls occurred throughout the rainfall, whereas grasslands and forest erosion occurred earlier and croplands later. Finally, extreme rainfall promoted mass wasting on slopes, gully slopes and gully walls, which are important in determining extreme rainstorm erosion pattern variation. This study aimed to reveal erosion pattern variation under extreme rainstorm events. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Fingerprinting Sediment Sources After an Extreme Rainstorm Event in a Small Catchment on the Loess Plateau, PR China

et al. 2017

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“…In recent years, land consolidation has achieved good results in practice. In 1999, the Chinese government began to implement the "Grain for Green" program, which relieved the negative effect of the slope cropland on the environment and, thus, effectively prevented soil erosion and desertification [51]. From 2001 to 2009, 24,881 km 2 of arable land area was added nationwide through land consolidation, accounting for approximately 2% of the total arable land [52].…”

Section: Land Rehabilitationmentioning

confidence: 99%

Sustainability of Land Use Promoted by Construction-to-Ecological Land Conversion: A Case Study of Shenzhen City, China

et al. 2016

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Rapid urbanization and rapid urban growth present great challenges to the sustainable utilization of land resources. This paper discusses the on-going process of construction-to-ecological land conversion (CELC) in terms of three aspects: land use, environmental effects, and system responses. CELC is compared to other current land conversion strategies in China. Taking Shenzhen City as an example, this paper introduces five areas in which CELC has been implemented since 2009, including basic farmland protection zones, mining areas, ecological corridors, inefficient industrial zones, and urban villages. This paper argues that Shenzhen's CELC model can improve the ecological environment, control urban sprawl, and promote sustainable land use and, thus, serve as an example for other cities in China.

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“…The Loess Plateau of China has historically suffered from considerable soil erosion, resulting in severe environmental and economic problems, such as desertification, rangeland degradation, and channel deposition [1]. In the Loess Plateau, severe soil erosion is often caused by infrequent heavy rain and storms and extreme precipitation [2].…”

Section: Introductionmentioning

confidence: 99%

Response of Extreme Precipitation to Solar Activity and El Nino Events in Typical Regions of the Loess Plateau

Gao

Zhang

et al. 2017

Advances in Meteorology

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Extreme climatic oscillation has been the subject of global attention. The purpose of this study is to explore the response of extreme precipitation to solar activity and El Nino events in typical regions of the Loess Plateau-a case study in the Yan'an area. The precipitation data was from nine weather stations in Yan'an and the sunspot number and the Southern Oscillation Index (SOI) were from 1951 to 2015. The results show that maximum precipitation occurred mainly at the peak sunspot number or 2a near it and the sunspot number minimum and valley values were not significantly correlated. The results of Morlet wavelet showed that a 41-year period of precipitation was the most obvious within the 64-year scale. Similarly, sunspot number showed a 16-year periodic variability. Correlation analyses of the 16-year and 41-year scales demonstrated that the relationships between precipitation and sunspot number were close. In addition, extreme precipitation often occurred in the year following El Nino events. According to 10-year moving average curves, precipitation generally showed a downward trend when SOI was negative. The results indicate that solar activity and El Nino events had significant impacts on precipitation in typical regions of the Loess Plateau.

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Soil erosion resistance of “Grain for Green” vegetation types under extreme rainfall conditions on the Loess Plateau, China

Cited by 137 publications

References 37 publications

Fingerprinting Sediment Sources After an Extreme Rainstorm Event in a Small Catchment on the Loess Plateau, PR China

Fingerprinting Sediment Sources After an Extreme Rainstorm Event in a Small Catchment on the Loess Plateau, PR China

Sustainability of Land Use Promoted by Construction-to-Ecological Land Conversion: A Case Study of Shenzhen City, China

Response of Extreme Precipitation to Solar Activity and El Nino Events in Typical Regions of the Loess Plateau

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