Rewetting is accepted as an effective technique in restoring degraded peatlands. However, it may adversely impact water quality, particularly in nutrient-rich peatlands. The aim of this study was to review water quality models applied to peatlands, with a focus on evaluating the performance (such as stability and accuracy) and complexity of the models. In a systematic review of published studies from 01/01/2003 to 10/12/2023, out of 3618 published studies on peatlands and nutrient modelling, only 23 studies applied water quality models to predict the evolution and distribution of nutrients of peatlands by using 16 different water quality models. Out of the 23 studies, only 1 predicted the nutrient concentration and transport of a rewetted peatland. Among the 16 models evaluated, only the mixed mire water and heat (MMHW) model was capable of considering the inherent heterogeneity in peatland characteristics. The HYDRUS 1D/2D model is effective at predicting nitrogen species, despite encountering challenges in some studies due to the complex nature of the peat environment. To enhance the predictive power of water quality models, it is important to consider all the processes that can affect the concentration of nutrients in peatlands such as oxidation of carbon, the nitrogen cycle, decay/production rate for nutrients, adsorption/desorption of nutrients in the soil, and the advection of nutrients due to the influence of ground water and surface water. To date, no peatland-specific water quality model has been developed to simultaneously predict DOC, nitrogen and phosphorus in peatland ecosystems.

中文翻译：

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泥炭地水质模型的性能和复杂性评估


再润湿被认为是恢复退化泥炭地的有效技术。然而，它可能会对水质产生不利影响，尤其是在营养丰富的泥炭地中。本研究的目的是审查应用于泥炭地的水质模型，重点是评估模型的性能（例如稳定性和准确性）和复杂性。在对 2003 年 1 月 1 日至 2023 年 12 月 10 日已发表的研究的系统评价中，在 3618 项已发表的泥炭地和营养模型研究中，只有 23 项研究应用水质模型通过使用 16 种不同的水质模型来预测泥炭地营养物质的演变和分布。在 23 项研究中，只有 1 项预测了再湿泥炭地的营养浓度和运输。在评价的 16 个模型中，只有泥沼水热混合 （MMHW） 模型能够考虑泥炭地特征的固有异质性。HYDRUS 1D/2D 模型在预测氮种类方面是有效的，尽管由于泥炭环境的复杂性，在某些研究中遇到了挑战。为了提高水质模型的预测能力，重要的是要考虑所有可能影响泥炭地养分浓度的过程，例如碳的氧化、氮循环、养分的腐烂/生成速率、土壤中养分的吸附/解吸，以及由于地下水和地表水的影响而导致的养分平流。迄今为止，还没有开发出针对泥炭地的水质模型来同时预测泥炭地生态系统中的 DOC、氮和磷。