Effects of water erosion on the redistribution of soil organic carbon in the hilly red soil region of southern China

Xue, Zhang; Li, Zhongwu; Tang, Zhenghong; Zeng, Guangming; Huang, Jianping; Guo, Wei; Chen, Xiaolin; Hirsh, Aaron

doi:10.1016/j.geomorph.2013.05.004

Cited by 86 publications

(39 citation statements)

References 31 publications

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“…3.3 Results of physico-chemical analyses 3.3.1 SOC correlation with other parameters Although SOC is generally reported to migrate attached to fine particles (Centeri, 2006;Fuchs et al, 2010;Wang et al, 2010;Zhang et al 2013) no correlation was found between these two parameters (Figure 5a). Accordingly, SOC is transported and deposited independently from the clay component.…”

Section: Data Evaluation Techniques Appliedmentioning

confidence: 99%

Redistribution of Soil Organic Carbon Triggered by Erosion at Field Scale Under Subhumid Climate, Hungary

et al. 2016

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Soil organic carbon (SOC) has primary importance in terms of soil physics, fertility and even of climate change control. An intensively cultivated Cambisol was studied in order to quantify SOC redistribution under subhumid climate. One hundred soil samples were taken from the representative points of the solum along the slopes from the depth of 20-300 cm with a mean 1.2 % SOC content. They were measured by the simultaneous application of diffuse reflectance (240-1900 nm) and traditional physico-chemical methods in order to compare the results. On the basis of the results hierarchical cluster analyses were performed. The spatial pattern of the groups created were similar, and even though the classifications were not the same, diffuse reflectance has proven to be a suitable method for soil/sediment classification even within a given arable field. Both organic and inorganic carbon distribution was found a proper tool for estimations of past soil erosion process. Results show SOC enrichment on two sedimentary spots with different geomorphological positions. Soil organic matter compound also differs between the two spots due to selective deposition of the delivered organic matter. The components of low molecular weight reach the bottom of the slope and there can leach into the profile, while the more polymerised organic matter compounds are delivered and deposited even before, on a higher segment of the slope in an aggregated form. This spatial difference appears below the uppermost tilled soil layer as well; referring the lower efficiency of conventional ploughing tillage in spatial soil homogenisation.

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Section: Data Evaluation Techniques Appliedmentioning

confidence: 99%

Redistribution of Soil Organic Carbon Triggered by Erosion at Field Scale Under Subhumid Climate, Hungary

et al. 2016

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“…They are the key to understanding soil erosion and hydrological process, and to design strategies to control the non-sustainable soil losses found in vineyards. Several authors have applied these experiments to measure rainfall-runoff processes, splash effect, soil erosion, infiltration, permeability, irrigation or nutrient movement [22,[31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48]. However, despite the effort and time invested by researchers in the understanding of soil degradation using rainfall simulations, one of the most important problems is the lack of a standard rainfall simulator for an effective transfer of knowledge and generation of comparable data.…”

Section: Introductionmentioning

confidence: 99%

Soil Erosion Processes in European Vineyards: A Qualitative Comparison of Rainfall Simulation Measurements in Germany, Spain and France

et al. 2016

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Small portable rainfall simulators are considered a useful tool to analyze soil erosion processes in cultivated lands. European research groups in Spain (Valencia, Málaga, Lleida, Madrid and La Rioja), France (Reims) and Germany (Trier) have used different rainfall simulators (varying in drop size distribution and fall velocities, kinetic energy, plot forms and sizes, and field of application) to study soil loss, surface flow, runoff and infiltration coefficients in different experimental plots (Valencia, Montes de Málaga, Penedès, Campo Real and La Rioja in Spain, Champagne in France and Mosel-Ruwer valley in Germany). The measurements and experiments developed by these research teams give an overview of the variety of methodologies used in rainfall simulations to study the problem of soil erosion and describe the erosion features in different climatic environments, management practices and soil types. The aims of this study are: (i) to investigate where, how and why researchers from different wine-growing regions applied rainfall simulations with successful results as a tool to measure soil erosion processes; (ii) to make a qualitative comparison about the general soil erosion processes in European terroirs; (iii) to demonstrate the importance of the development of standard method for measurement of soil erosion processes in vineyards, using rainfall simulators; and (iv) and to analyze the key factors that should be taken into account to carry out rainfall simulations. The rainfall simulations in all cases allowed infiltration capacity, susceptibility of the soil to detachment and generation of sediment loads to runoff to be determined. Despite using small plots, the experiments were useful to analyze the influence of soil cover to reduce soil erosion, to make comparisons between different locations, and to evaluate the influence of different soil characteristics. The comparative analysis of the studies performed in different study areas points out the need to define an operational methodology to carry out rainfall simulations, which allows us to obtain representative and comparable results and to avoid errors in the interpretation in order to achieve comparable information about runoff and soil loss.

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“…Areas rich in soil carbon are prone to losing greater amounts of carbon to erosion than areas with low soil carbon concentration (Cowie et al 2006). Fortunately, the theoretical rationale has been proven reliable by many previous studies (Rimal & Lal 2009;Hancock et al 2010;Stavi & Lal 2011;Zhang et al 2013). …”

Section: Discussionmentioning

confidence: 97%

“…Soil loses more carbon in areas with steeper slopes (Page et al 2004;Hancock et al 2010). (3) Precipitation is also an important driver for soil carbon redistribution, since abundant precipitation can lead to significant hydrological erosion and a loss of soil carbon (Rimal & Lal 2009;Stavi & Lal 2011;Zhang et al 2013). (4) The initial soil carbon concentration is the available source of carbon that provides a supply of carbon for redistribution.…”

Section: Discussionmentioning

confidence: 99%

“…Soil carbon redistribution (also known as relocation or translocation) is a physical and ecological transportation process that is part of the global carbon cycle (Dawson & Smith 2007;Zhang et al 2013); it includes erosion, leaching, transfer and deposition, etc., which usually alter the location of soil carbon directly (Gregorich et al 1998;Sanderman & Amundson 2009;Shi et al 2009). …”

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Assessment of the redistribution of soil carbon using a new index—a case study in the Haihe River Basin, North China

Chen

Zhou

et al. 2014

Environ Monit Assess

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Effects of water erosion on the redistribution of soil organic carbon in the hilly red soil region of southern China

Cited by 86 publications

References 31 publications

Redistribution of Soil Organic Carbon Triggered by Erosion at Field Scale Under Subhumid Climate, Hungary

Redistribution of Soil Organic Carbon Triggered by Erosion at Field Scale Under Subhumid Climate, Hungary

Soil Erosion Processes in European Vineyards: A Qualitative Comparison of Rainfall Simulation Measurements in Germany, Spain and France

Assessment of the redistribution of soil carbon using a new index—a case study in the Haihe River Basin, North China

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