Soil Organic Carbon

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Duan Zheng-hu - One of the best experts on this subject based on the ideXlab platform.

  • Effects of Human Activities on Soil Organic Carbon Pool
    Journal of Desert Research, 2011
    Co-Authors: Duan Zheng-hu
    Abstract:

    Soil Organic Carbon pool has a direct effect on global Carbon balance,so research of Soil Organic Carbon pool is the key of researches on the global Carbon cycling.Understanding of Soil Organic Carbon dynamics and its mechanisms under impact of human activities will not only reduce the uncertainty of predicting climate change in the future,but also provide theoretical references for technology selection and incentive policy making for Soil Carbon sequestration.This paper reviewed the domestic and overseas study advances on effects of human activities on Soil Organic Carbon pool,especially the effects of land use changes,tillage methods and management practices on Soil Organic Carbon pool.Lastly,some suggestions were presented to mitigate anthropogenic emissions of greenhouse gases,promote Carbon sequestration,and maintain sustainable development of agriculture.

Kanika Singh - One of the best experts on this subject based on the ideXlab platform.

  • The knowns, known unknowns and unknowns of sequestration of Soil Organic Carbon
    Agriculture Ecosystems and Environment, 2013
    Co-Authors: Uta Stockmann, Damien J. Field, Budiman Minasny, Alexander B. Mcbratney, Mark A. Adams, John W. Crawford, Nilusha Henakaarchchi, Meaghan Jenkins, Vivien De Remy De Courcelles, Kanika Singh
    Abstract:

    Soil contains approximately 2344 Gt (1 gigaton = 1 billion tonnes) of Organic Carbon globally and is the largest terrestrial pool of Organic Carbon. Small changes in the Soil Organic Carbon stock could result in significant impacts on the atmospheric Carbon concentration. The fluxes of Soil Organic Carbon vary in response to a host of potential environmental and anthropogenic driving factors. Scientists worldwide are contemplating questions such as: 'What is the average net change in Soil Organic Carbon due to environmental conditions or management practices?', 'How can Soil Organic Carbon sequestration be enhanced to achieve some mitigation of atmospheric Carbon dioxide?' and 'Will this secure Soil quality?'. These questions are far reaching, because maintaining and improving the world's Soil resource is imperative to providing sufficient food and fibre to a growing population. Additional challenges are expected through climate change and its potential to increase food shortages. This review highlights knowledge of the amount of Carbon stored in Soils globally, and the potential for Carbon sequestration in Soil. It also discusses successful methods and models used to determine and estimate Carbon pools and fluxes. This knowledge and technology underpins decisions to protect the Soil resource.

Ma Huiying - One of the best experts on this subject based on the ideXlab platform.

  • Influence of Vegetation Coverage and Climate Environment on Soil Organic Carbon in the Qilian Mountains
    Scientific reports, 2019
    Co-Authors: Wan Qiaozhuo, Guofeng Zhu, Huiwen Guo, Yu Zhang, Hanxiong Pan, Yong Leilei, Ma Huiying
    Abstract:

    Studying the spatial distribution pattern of Soil Organic Carbon and its influencing factors is essential for understanding the Carbon cycle in terrestrial ecosystems. Soil samples from four active layers of typical vegetation types (Populus, subalpine shrubs, Picea crassifolia Kom, and alpine meadow) in the upper reaches of Shiyang River basin in the Qilian Mountains were collected to determine the Soil Organic Carbon content and physicochemical properties. The results show the following: (1) There are significant differences in the vertical distribution of Soil Organic Carbon in the watershed, and the Soil Organic Carbon content decreases significantly with increasing Soil depth. (2) Mainly affected by biomass, the Organic Carbon content of different vegetation types in different Soil layers is as follows: Alpine meadow > Picea crassifolia Kom > Populus > Subalpine shrub, and the Soil Organic Carbon content increases with increasing altitude. Under different vegetation types, the Soil Organic content is the highest in the 0–30 cm Soil profile, and the maximum value often appears in the 0–10 cm layer, then gradually decreases downward. (3) When Soil Organic Carbon is determined in different vegetation types in the study area, the change of hydrothermal factors has little effect on Soil Organic Carbon content in the short term.

Uta Stockmann - One of the best experts on this subject based on the ideXlab platform.

  • Global Space-Time Soil Organic Carbon Assessment
    2017
    Co-Authors: J. Padarian, Uta Stockmann, Budiman Minasny, Alexander B. Mcbratney, Dominique Arrouays
    Abstract:

    Global Space-Time Soil Organic Carbon Assessment. Global Soil Organic Carbon Conference

  • Challenges for Soil Organic Carbon Research
    Soil Carbon, 2014
    Co-Authors: Alexander B. Mcbratney, Denis A. Angers, Uta Stockmann, Budiman Minasny, Damien J. Field
    Abstract:

    The Soil body is the largest terrestrial pool of Organic Carbon globally. Lately, research related to Soil Organic Carbon has been a main focus worldwide, motivated by the potential the Soil inhabits to become a manageable sink for atmospheric Carbon dioxide and thus to mitigate climate change and the known benefits of increased Soil Organic Carbon for the functioning of Soils. Here, challenges are highlighted for Soil Organic Carbon research that we are currently facing. Knowledge on Soil Organic Carbon dynamics in the Soil system is briefly reviewed, followed by an elaboration on how Soil Organic Carbon dynamics and Soil Organic Carbon stocks have been modelled in space and time and where modelling needs to go.

  • The knowns, known unknowns and unknowns of sequestration of Soil Organic Carbon
    Agriculture Ecosystems and Environment, 2013
    Co-Authors: Uta Stockmann, Damien J. Field, Budiman Minasny, Alexander B. Mcbratney, Mark A. Adams, John W. Crawford, Nilusha Henakaarchchi, Meaghan Jenkins, Vivien De Remy De Courcelles, Kanika Singh
    Abstract:

    Soil contains approximately 2344 Gt (1 gigaton = 1 billion tonnes) of Organic Carbon globally and is the largest terrestrial pool of Organic Carbon. Small changes in the Soil Organic Carbon stock could result in significant impacts on the atmospheric Carbon concentration. The fluxes of Soil Organic Carbon vary in response to a host of potential environmental and anthropogenic driving factors. Scientists worldwide are contemplating questions such as: 'What is the average net change in Soil Organic Carbon due to environmental conditions or management practices?', 'How can Soil Organic Carbon sequestration be enhanced to achieve some mitigation of atmospheric Carbon dioxide?' and 'Will this secure Soil quality?'. These questions are far reaching, because maintaining and improving the world's Soil resource is imperative to providing sufficient food and fibre to a growing population. Additional challenges are expected through climate change and its potential to increase food shortages. This review highlights knowledge of the amount of Carbon stored in Soils globally, and the potential for Carbon sequestration in Soil. It also discusses successful methods and models used to determine and estimate Carbon pools and fluxes. This knowledge and technology underpins decisions to protect the Soil resource.

Wan Qiaozhuo - One of the best experts on this subject based on the ideXlab platform.

  • Influence of Vegetation Coverage and Climate Environment on Soil Organic Carbon in the Qilian Mountains
    Scientific reports, 2019
    Co-Authors: Wan Qiaozhuo, Guofeng Zhu, Huiwen Guo, Yu Zhang, Hanxiong Pan, Yong Leilei, Ma Huiying
    Abstract:

    Studying the spatial distribution pattern of Soil Organic Carbon and its influencing factors is essential for understanding the Carbon cycle in terrestrial ecosystems. Soil samples from four active layers of typical vegetation types (Populus, subalpine shrubs, Picea crassifolia Kom, and alpine meadow) in the upper reaches of Shiyang River basin in the Qilian Mountains were collected to determine the Soil Organic Carbon content and physicochemical properties. The results show the following: (1) There are significant differences in the vertical distribution of Soil Organic Carbon in the watershed, and the Soil Organic Carbon content decreases significantly with increasing Soil depth. (2) Mainly affected by biomass, the Organic Carbon content of different vegetation types in different Soil layers is as follows: Alpine meadow > Picea crassifolia Kom > Populus > Subalpine shrub, and the Soil Organic Carbon content increases with increasing altitude. Under different vegetation types, the Soil Organic content is the highest in the 0–30 cm Soil profile, and the maximum value often appears in the 0–10 cm layer, then gradually decreases downward. (3) When Soil Organic Carbon is determined in different vegetation types in the study area, the change of hydrothermal factors has little effect on Soil Organic Carbon content in the short term.