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Diffuse Reflectance Spectroscopy for Mapping Soil Carbon Stock in the Gilbués Desertification Region at Brazilian Cerrado

Author

Listed:
  • Julio César Galdino de Sousa

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Yuri Jacques Agra Bezerra da Silva

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Vanessa Martins

    (Colégio Técnico de Bom Jesus, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Sueli Rodrigues

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Marcos Paulo Rodrigues Teixeira

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Paulo Henrique Dalto

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Laércio Vieira de Melo Wanderley Neves

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

  • Antonio Rafael Sánchez-Rodríguez

    (Departamento de Agronomía, Campus Universitario de Rabanales, Universidad de Córdoba, Ctra. Madrid-Cadiz, Km 396, 14071 Córdoba, Spain)

  • Ronny Sobreira Barbosa

    (Campus Professora Cinobelina Elvas, Universidade Federal do Piauí, Km 01, Rua Manoel Gracindo, Planalto Horizonte, Bom Jesus 64900-000, Piauí, Brazil)

Abstract

The carbon stock (C Stock) is a key soil attribute, especially in areas under degradation. The objective of this study was to map the C Stock and other physical and chemical attributes on the soil surface of a micro-watershed located in the Gilbués Desertification Nucleus and to calibrate pedometric functions to map them, applying spectra obtained by Diffuse Reflectance Spectroscopy (DRS) in the near-infrared (NIR) region. This study was developed in the Piripiri Stream Micro-watershed (PSMW), which presents different levels of degradation. A total of 214 composite soil samples were collected from the 0–0.10 m depth layer. Spectral and laboratory analyses were performed following traditional methods. The results from 100 samples were subjected to descriptive analysis, pedometric modeling, and geostatistics, while the remainder were used exclusively for the prediction and modeling of the predicted attribute maps. C Stock ranged from 0.3 to 11%, with the highest values associated with the least sandy sites. We assert that stakeholders, including government agencies, could utilize DRS for mapping main soil attributes, such as C Stocks, soil granulometry, or total organic carbon, in regions characterized by similar parent material and soil properties. This application can support informed decision-making regarding land management in extensive areas facing soil threats.

Suggested Citation

  • Julio César Galdino de Sousa & Yuri Jacques Agra Bezerra da Silva & Vanessa Martins & Sueli Rodrigues & Marcos Paulo Rodrigues Teixeira & Paulo Henrique Dalto & Laércio Vieira de Melo Wanderley Neves , 2023. "Diffuse Reflectance Spectroscopy for Mapping Soil Carbon Stock in the Gilbués Desertification Region at Brazilian Cerrado," Land, MDPI, vol. 12(9), pages 1-20, September.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:9:p:1812-:d:1244283
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    References listed on IDEAS

    as
    1. Mojtaba Zeraatpisheh & Esmaeil Bakhshandeh & Mostafa Emadi & Tengfei Li & Ming Xu, 2020. "Integration of PCA and Fuzzy Clustering for Delineation of Soil Management Zones and Cost-Efficiency Analysis in a Citrus Plantation," Sustainability, MDPI, vol. 12(14), pages 1-17, July.
    2. Ravic Nijbroek & Kristin Piikki & Mats Söderström & Bas Kempen & Katrine G. Turner & Simeon Hengari & John Mutua, 2018. "Soil Organic Carbon Baselines for Land Degradation Neutrality: Map Accuracy and Cost Tradeoffs with Respect to Complexity in Otjozondjupa, Namibia," Sustainability, MDPI, vol. 10(5), pages 1-20, May.
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