Cross-reference for relating Genetic Soil Classification of China with WRB at different scales

Shi, Xinjie; Yu, Dongsheng; Xu, Shixiao; Warner, Eric; Wang, H.J.; Sun, Weiyi; Zhao, Yongcun; Zi-tong, Gong

doi:10.1016/j.geoderma.2009.12.017

Cited by 166 publications

(76 citation statements)

References 14 publications

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“…For each profile, the measured data on BD and SOC content were available for each soil layer. Based on the national standards of China (GB/T 17296-2009), Chinese soils are divided into twelve types (ferrallisols, alfisols, semi-alfisols, pedocals, aridisols, desert soils, amorphic soil, aqueous soils, semi-aqueous soils, alkali-saline soils, anthrosols, and alpine soils); furthermore, we offered a cross-reference table (Table S1) relating Genetic Soil Classification of China with World Reference Base (Shi et al, 2010;Zhang et al, 2014). Desert soils, aridisols, and alpine soils were not considered in this study due to the limitations of data in SOC content and BD.…”

Section: Data Sourcementioning

confidence: 99%

Methods of evaluating soil bulk density: Impact on estimating large scale soil organic carbon storage

2016

CATENA

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Bulk density (BD) is one of the most important parameters used to calculate soil organic carbon (SOC) storage. Differences in the methods available to substitute missing BD data, including mean, median, and pedo-transfer functions (PTFs), are considered the main reason for the high uncertainty in SOC storage estimations at large scales. In this study, we used the measured BD and SOC contents of 1007 soil profiles to evaluate the accuracy of six BD substitution methods (two mean methods, a median method, and three PTFs). The results showed that PTFs underestimated SOC storage by 8% in the 0-20 cm soil layer, while mean and median methods overestimated SOC storage by 45% and 51%, respectively. Furthermore, the accuracy of PTFs estimates decreased with increasing soil depth. Relative to the measured values, and based on mean errors, root mean square errors, and method efficiency, the PFTs estimates were more accurate than those of the mean and median methods. Estimation bias increased with increasing SOC content for all methods, but differed among different soil types. The results of this study demonstrate that PTFs provide more accurate estimates of SOC storage when the extent of missing BD is substantial. Furthermore, the results provide new insights into establishing optimized PTFs, which contain more soil properties and piecewise functions of SOC content, in order to improve SOC storage estimates at large scales.

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Section: Data Sourcementioning

confidence: 99%

Methods of evaluating soil bulk density: Impact on estimating large scale soil organic carbon storage

2016

CATENA

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“…Soil data originate from available soil maps and profile descriptions based on the Second National Soil Survey in China (Shi et al 2010). In the Xiangxi catchment, the soils were surveyed at a scale of 1:160,000-1:180,000.…”

Section: Geodatabasementioning

confidence: 99%

Assessment of geo-hazards in a rapidly changing landscape: the three Gorges Reservoir Region in China

et al. 2015

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Large dam projects attract worldwide scientific attention due to their environmental impacts and socioeconomic consequences. One prominent example is the Three Gorges Dam (TGD) at the Yangtze River in China. Due to considerable resettlements, large-scale expansion of infrastructure and shifts in land use and management, the TGD project has irreversible impacts on the Upper Yangtze River Basin and strongly challenges the environmental conditions of this fast-developing region. Soil erosion and landslides are major geo-hazards. Knowing the extent and consequences of those geo-hazards for the landscape is essential to predict and evaluate their risk potential and allows for the development of strategies for a sustainable future land use in the Three Gorges Region (TGR). In this context, our research objectives are (1) to better understand the mechanisms of soil erosion, landslides, and diffuse matter fluxes in the TGR and their anthropogenic and environmental control factors, (2) to predict their hazard potential by combining spatial and temporal, scenario-driven high-resolution modeling in combination with multiscale earth observation data, and (3) to develop a multicomponent approach for the assessment and monitoring of geogene structures and processes. The paper describes the workflow of the project and introduces case studies, representing the current state of our research. It is shown that land-use changes as well as the water-level fluctuations of the reservoir are the crucial drivers for the soil erosion and landslide hazard. Furthermore, we present a framework aiming at the establishment of a monitoring and measuring network as well as an early warning system.

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“…According to their results and those recorded earlier by Tessier and Pédro (1987) on pure clays, the water retention properties of clayey soils appear to be mainly affected by the greatest effective stress recorded by the soil, the proportion of poorly available water compared to the total amount of available water increasing with the effective stress recorded. The parent materials of the Chinese red clay are mainly Quaternary continental sediments which reorganize material resulting from continental alteration from the Cretaceous or Eocene (BGMRHN, 1988;Wilson et al, 2004a and b;Hu et al, 2010;Shi et al, 2010). Because of this history, they were in all likelihood submitted to great hydric stresses, thus leading to strongly consolidated clayey parent materials with consequences for the soils such as a high proportion of poorly available water, strong aggregation, and weak shrinkage properties (Bruand and Tessier, 2000).…”

Section: Water Retention Propertiesmentioning

confidence: 99%

“…They cover 102 million ha, including ten provinces (Cao and Zhu, 1999;He et al, 2004;Wilson et al, 2004a;Zheng et al, 2008). They develop mainly in alluvial Quaternary sediments which reorganize materials resulting from continental alteration or in continental sediments from the Cretaceous or Eocene (BGMRHN, 1988;Wilson et al, 2004a and b;Hu et al, 2010;Shi et al, 2010). The Chinese red soils are either Ferrallisols (Latosolic red soils or Red soil groups) or Semi-Alfisols (Torrid red soil group) of the Genetic Soil Classification of China (Shi et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

“…They develop mainly in alluvial Quaternary sediments which reorganize materials resulting from continental alteration or in continental sediments from the Cretaceous or Eocene (BGMRHN, 1988;Wilson et al, 2004a and b;Hu et al, 2010;Shi et al, 2010). The Chinese red soils are either Ferrallisols (Latosolic red soils or Red soil groups) or Semi-Alfisols (Torrid red soil group) of the Genetic Soil Classification of China (Shi et al, 2010). In the International Reference Base System (ISSS Working Group WRB, 2007), Chinese red soils belong to the Alisol, Acrisol or Cambisol group.…”

Section: Introductionmentioning

confidence: 99%

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Origin of the high sensitivity of Chinese red clay soils to drought: Significance of the clay characteristics

et al. 2014

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To cite this version:Benoît D'angelo, Ary Bruand, Jiangtao Qin, Xihnua Peng, Christian Hartmann, et al.. Origin of the high sensitivity of Chinese red clay soils to drought: significance of the clay characteristics. Geoderma, Elsevier, 2014, 223-225, pp.46-53. 10 AbstractThe red clay soils which are widespread in China are known to be highly sensitive to drought during the dry season but the origin of this high sensitivity to drought remains unclear.Several red clay soils were selected in the Hunan province for study. We studied their basic physico-chemical properties and clay mineralogy, their structure and shrinkage properties, as well as their water retention properties. Results show that the amount of water available between -330 and -15 000 hPa water potential is consistent with that recorded in many other clay soils from different parts of the world and thus cannot explain the high sensitivity of the red clay soils to drought. This high sensitivity to drought might be related to the high proportion of poorly available water which was characterized by the amount of available water between -3300 and -15 000 hPa water potential. Comparison with clay soils located in different parts of the world and for which the sensitivity to drought was not identified, showed that this proportion of poorly available water is indeed much higher in the red clay soils 2 studied than in clay soils representing a large range of both clay content and mineralogy. This specific behaviour of the red clay soils studied is thought to be related to the history of their parent materials: these materials are continental sediments which may have been submitted to great hydric stress, thus leading to strongly consolidated soils with consequences such as a high proportion of poorly available water, strong aggregation and weak shrinkage properties.

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Cross-reference for relating Genetic Soil Classification of China with WRB at different scales

Cited by 166 publications

References 14 publications

Methods of evaluating soil bulk density: Impact on estimating large scale soil organic carbon storage

Methods of evaluating soil bulk density: Impact on estimating large scale soil organic carbon storage

Assessment of geo-hazards in a rapidly changing landscape: the three Gorges Reservoir Region in China

Origin of the high sensitivity of Chinese red clay soils to drought: Significance of the clay characteristics

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