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Topography, Soil Elemental Stoichiometry and Landscape Structure Determine the Nitrogen and Phosphorus Loadings of Agricultural Catchments in the Subtropics

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  • Yong Li

    (State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China
    Key Laboratory of Agro-Ecological Processes in Subtropical Regions and Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
    Faculty of Veterinary and Agricultural Sciences, The University of Melbourne, Parkville, VIC 3010, Australia)

  • Yi Wang

    (College of Resources and Environmental Engineering, Ludong University, Yantai 264025, China)

  • Ji Liu

    (Key Laboratory of Agro-Ecological Processes in Subtropical Regions and Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China
    Hubei Province Key Laboratory for Geographical Process Analysis and Simulation, Central China Normal University, Wuhan 430079, China
    Department of Ecohydrology, Leibniz Institute of Freshwater Ecology and Inland Fisheries, 12587 Berlin, Germany)

  • Meihui Wang

    (College of Geography, Nanning Normal University, Nanning 530011, China)

  • Jianlin Shen

    (Key Laboratory of Agro-Ecological Processes in Subtropical Regions and Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China)

  • Xinliang Liu

    (Key Laboratory of Agro-Ecological Processes in Subtropical Regions and Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China)

Abstract

The control of nitrogen (N) and phosphorus (P) loadings to receiving waters is often overcompensated for by catchment planners. The objectives of this study, which investigated nine catchments in the subtropics of China, were to (i) quantify the explicit relationships between the N and P loadings to receiving waters and the topographic, soil and landscape characteristics of catchments, (ii) identify key impact factors and (iii) identify the most influential N and P loading pathways via catchments. Our collective data indicated that elevation–relief ratio, soil elemental stoichiometry and landscape structure determined the N and P loadings of the studied agricultural catchments. The N export from catchments characterized by a woodland backdrop (Masson pine) mosaic with the intrusion of paddy fields in the subtropics was postulated to be driven by two simultaneous processes: discharge and retention. In addition, a soil C:P threshold ratio for the catchment N and P loadings was estimated to be in the range of 107–117. Our PLS-SEM path analyses suggested that to reduce the N export from agricultural catchments in the subtropics, mitigation practices in landscape ecosystems (e.g., landscape patterns, ditches and streams) need to be taken into consideration and predominantly deployed, despite traditional measures used for soils. Strategies to lower the catchment P export can be directly proposed at the source site. Our findings provide greater insights into the transport and retention of N and P nutrients through catchments and may optimally direct the focus of catchment planners, thus increasing the control efficacy of catchment N and P losses.

Suggested Citation

  • Yong Li & Yi Wang & Ji Liu & Meihui Wang & Jianlin Shen & Xinliang Liu, 2023. "Topography, Soil Elemental Stoichiometry and Landscape Structure Determine the Nitrogen and Phosphorus Loadings of Agricultural Catchments in the Subtropics," Land, MDPI, vol. 12(3), pages 1-21, February.
    • Handle: RePEc:gam:jlands:v:12:y:2023:i:3:p:568-:d:1081041
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    References listed on IDEAS

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    1. Richard B. Alexander & Richard A. Smith & Gregory E. Schwarz, 2000. "Effect of stream channel size on the delivery of nitrogen to the Gulf of Mexico," Nature, Nature, vol. 403(6771), pages 758-761, February.
    2. Janeau, J.-L. & Gillard, L.-C. & Grellier, S. & Jouquet, P. & Le, Thi Phuong Quynh & Luu, Thi Nguyet Minh & Ngo, Quoc Anh & Orange, D. & Pham, Dinh Rinh & Tran, Duc Toan & Tran, Sy Hai & Trinh, Anh Du, 2014. "Soil erosion, dissolved organic carbon and nutrient losses under different land use systems in a small catchment in northern Vietnam," Agricultural Water Management, Elsevier, vol. 146(C), pages 314-323.
    3. Bahman Amiri & Kaneyuki Nakane, 2009. "Modeling the Linkage Between River Water Quality and Landscape Metrics in the Chugoku District of Japan," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 23(5), pages 931-956, March.
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