Spatiotemporal dynamics of soil phosphorus and crop uptake in global cropland during the 20th century

Zhang, Jie; Beusen, Arthur; Apeldoorn, Dirk van; Mogollón, José M; Yu, Chunyan; Bouwman, A. F.

doi:10.5194/bg-14-2055-2017

Cited by 51 publications

(60 citation statements)

References 29 publications

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“…It implies that P may not be the major growth limiting factor in our simulations, but rather N (Kvakić et al, 2018;. However, it is still important to increase P inputs in the P limited regions to maintain soil fertility especially under a continuous cultivation (Ringeval et al, 2014;Zhang et al, 2017).…”

Section: Discussionmentioning

confidence: 89%

Integrative Crop‐Soil‐Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations

Liu

Yang

Ciais

et al. 2018

Global Biogeochemical Cycles

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Fertilization, crop uptake followed by plant harvest, runoff and erosion, and transformations of phosphorus (P) in soil are the major factors influencing the P balance of croplands. It is important to integrate plant‐soil‐management interactions into consistent modeling systems to determine the effect of P fertilization conditions on yields and to quantify P losses. Previous assessment of P losses on large scales did not consider the interactions among these factors. Here we applied a grid‐based crop model to estimate global P losses from three most produced crops: maize, rice, and wheat. The model was forced by detailed P input data sets over the period 1998–2002. According to our simulations, global P losses from the three crops reached 1.2 Tg P/year, and about 44% of it was due to soil erosion. The global total P losses were dominated by contributions from a few hot spot regions. Reducing P fertilizer in regions experiencing excessive P uses and hence losses, especially in China and India, could achieve the same yields as today and save about two thirds of global total P inputs, with the cobenefits of declining global total P losses by 41% and downstream water quality improvement. Reducing soil erosion and retaining more crop residues on croplands could further save P inputs and alleviate P losses. This study is of significance to determine the major factors influencing P balance across regions of the world and help policy makers to propose efficient strategies for tackling P‐driven environmental problems.

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Section: Discussionmentioning

confidence: 89%

Integrative Crop‐Soil‐Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations

Liu

Yang

Ciais

et al. 2018

Global Biogeochemical Cycles

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“…For example, Figueira et al (2016) determined changes in inputs, outputs, and soil N stock using natural 15 N enrichment in the soils sampled from a chronosequence of soybean fields in Brazil. A simplified two-pool (labile and stable pools) P model, the Dynamic Phosphorus Pool Simulator (DPPS), has been developed to estimate P legacies from regional to global scales (Lun et al, 2018;Mogollón et al, 2018;Zhang et al, 2017). Other researchers used soil P dynamics models with more than two P pools (Goll et al, 2012;Ringeval et al, 2017;Wang et al, 2009;Yang et al, 2013) to study the distribution of soil P. Due to lack of data and understanding, it is difficult to compare and validate soil P pool estimates from different models.…”

Section: 1029/2018gb006060mentioning

confidence: 99%

Quantifying Nutrient Budgets for Sustainable Nutrient Management

Zhang

Davidson

Zou

et al. 2020

Global Biogeochemical Cycles

111

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Nutrients, such as nitrogen and phosphorus, provide vital support for human life, but overloading nutrients to the Earth system leads to environmental concerns, such as water and air pollution on local scales and climate change on the global scale. With an urgent need to feed the world's growing population and the growing concern over nutrient pollution and climate change, sustainable nutrient management has become a major challenge for this century. To address this challenge, the growing body of research on nutrient budgets, namely the nutrient inputs and outputs of a given system, has provided great opportunities for improving scientific knowledge of the complex nutrient cycles in the coupled human and natural systems. This knowledge can help inform stakeholders, such as farmers, consumers, and policy makers, on their decisions related to nutrient management. This paper systematically reviews major challenges, as well as opportunities, in defining, quantifying, and applying nutrient budgets. Nutrient budgets have been defined for various systems with different research or application purposes, but the lack of consistency in the system definition and its budget terms has hindered intercomparison among studies and experience‐sharing among researchers and regions. Our review synthesizes existing nutrient budgets under a framework with five systems (i.e., Soil‐Plant system, Animal system, Animal‐Plant‐Soil system, Agro‐Food system, and Landscape system) and four spatial scales (i.e., Plot and Farm, Watershed, National, and Global scales). We define these systems and identify issues of nitrogen and phosphorus budgets within each. Few nutrient budgets have been well balanced at any scale, due to the large uncertainties in the quantification of several major budget terms. The type and level of challenges vary across spatial scales and also differ among nutrients. Improvement in nutrient budgets will rely not only on the technological advancement of scientific observations and models but also on better bookkeeping of human activity data. While some nutrient budget terms may need decades, or even centuries, of research to be well quantified within desirable levels of uncertainties, it is imperative to effectively communicate to interested stakeholders our understanding of nutrient budgets so that scientists and a variety of stakeholders can work together to address the sustainable nutrient management challenge of this century.

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“…In order to calculate the long-term evolution and geographical origin of cropland and grassland soil P stocks, we coupled the GRAFS approach (Le Noë et al 2018) and the DPPS model (by Wolf et al 1987, Sattari et al 2012, Zhang et al 2017. Hereafter, we briefly describe the hypotheses, input data and coupling of the two models (figure 1); further details are provided in supplementary online material 1 and 2 (SOM 1, 2) (stacks.iop.org/ERL/15/064022/mmedia) and the whole model calculations are available in the form of an excel workbook in SOM 3.…”

Section: Model Descriptionmentioning

confidence: 99%

“…Internal processes of P exchange between the labile and stable P pools are represented by first order rate kinetics for both processes. The constant rate for the transfer from labile to stable P (k L-S ) is fixed at 0.2 yr −1 (Wolf et al 1987, Zhang et al 2017, while the rate constant for stable P conversion into labile P (k S-L ) is one order of magnitude higher, and is calibrated for each region based on observed values of Olsen P for the 1995-2004 and 2005-2014 periods reported by Gouny et al (2016). The best fit values of k S-L of each region ranges between 0.005 and 0.1 yr −1 , with a mean value of 0.02 yr −1 .…”

Section: Model Descriptionmentioning

confidence: 99%

The phosphorus legacy offers opportunities for agro-ecological transition (France 1850–2075)

Noë

Roux

Billen

et al. 2020

Environ. Res. Lett.

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Management of the non-renewable resource phosphorus (P) is critical to agricultural sustainability. The global P cycle is currently disturbed beyond planetary boundaries, mostly due to large excess P use in the agriculture of industrialized countries, while P is lacking in the Global South. The trajectories of P management and their effects on future sustainable agriculture were investigated for the case of France from 1850 to 2015 based on empirical data and simulations of two coupled biogeochemical models. Here we show that while French cropland soils have accumulated significant amounts of P, mainly sourced from former colonies or protectorates, P reserves in grassland soils have been depleted. Scenario calculations indicate that current P reserves may on average allow for another 60 years of agricultural production without mineral P application. In the light of a possible upcoming P scarcity, this time frame offers an opportunity for a transition towards regionally closed P loops and enhanced sustainability, allowing for fairer international distribution of P resources in the future.

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Spatiotemporal dynamics of soil phosphorus and crop uptake in global cropland during the 20th century

Cited by 51 publications

References 29 publications

Integrative Crop‐Soil‐Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations

Integrative Crop‐Soil‐Management Modeling to Assess Global Phosphorus Losses from Major Crop Cultivations

Quantifying Nutrient Budgets for Sustainable Nutrient Management

The phosphorus legacy offers opportunities for agro-ecological transition (France 1850–2075)

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