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Soil structure is an important omission in Earth System Models.
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-27 , DOI: 10.1038/s41467-020-14411-z Simone Fatichi 1 , Dani Or 2, 3 , Robert Walko 4 , Harry Vereecken 5 , Michael H Young 6 , Teamrat A Ghezzehei 7 , Tomislav Hengl 8 , Stefan Kollet 5 , Nurit Agam 9 , Roni Avissar 4
Nature Communications ( IF 14.7 ) Pub Date : 2020-01-27 , DOI: 10.1038/s41467-020-14411-z Simone Fatichi 1 , Dani Or 2, 3 , Robert Walko 4 , Harry Vereecken 5 , Michael H Young 6 , Teamrat A Ghezzehei 7 , Tomislav Hengl 8 , Stefan Kollet 5 , Nurit Agam 9 , Roni Avissar 4
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Most soil hydraulic information used in Earth System Models (ESMs) is derived from pedo-transfer functions that use easy-to-measure soil attributes to estimate hydraulic parameters. This parameterization relies heavily on soil texture, but overlooks the critical role of soil structure originated by soil biophysical activity. Soil structure omission is pervasive also in sampling and measurement methods used to train pedotransfer functions. Here we show how systematic inclusion of salient soil structural features of biophysical origin affect local and global hydrologic and climatic responses. Locally, including soil structure in models significantly alters infiltration-runoff partitioning and recharge in wet and vegetated regions. Globally, the coarse spatial resolution of ESMs and their inability to simulate intense and short rainfall events mask effects of soil structure on surface fluxes and climate. Results suggest that although soil structure affects local hydrologic response, its implications on global-scale climate remains elusive in current ESMs.
中文翻译：
土壤结构是地球系统模型中的重要遗漏。
地球系统模型（ESM）中使用的大多数土壤水力信息均来自脚踏传递函数，该函数使用易于测量的土壤属性来估算水力参数。此参数化在很大程度上取决于土壤质地，但忽略了由土壤生物物理活性引起的土壤结构的关键作用。土壤结构的遗漏在用于训练脚踏传递功能的采样和测量方法中也很普遍。在这里，我们展示了生物物理起源的显着土壤结构特征的系统性包含如何影响局部和全球的水文和气候响应。局部地，包括模型中的土壤结构，显着改变了湿润和植被区的入渗径流分配和补给。在全球范围内 ESMs的粗略空间分辨率及其无法模拟强降雨和短降雨事件，掩盖了土壤结构对表面通量和气候的影响。结果表明，尽管土壤结构会影响当地的水文响应，但在目前的ESM中，其对全球气候的影响仍然难以捉摸。
更新日期：2020-01-27
中文翻译：
土壤结构是地球系统模型中的重要遗漏。
地球系统模型（ESM）中使用的大多数土壤水力信息均来自脚踏传递函数，该函数使用易于测量的土壤属性来估算水力参数。此参数化在很大程度上取决于土壤质地，但忽略了由土壤生物物理活性引起的土壤结构的关键作用。土壤结构的遗漏在用于训练脚踏传递功能的采样和测量方法中也很普遍。在这里，我们展示了生物物理起源的显着土壤结构特征的系统性包含如何影响局部和全球的水文和气候响应。局部地，包括模型中的土壤结构，显着改变了湿润和植被区的入渗径流分配和补给。在全球范围内 ESMs的粗略空间分辨率及其无法模拟强降雨和短降雨事件，掩盖了土壤结构对表面通量和气候的影响。结果表明，尽管土壤结构会影响当地的水文响应，但在目前的ESM中，其对全球气候的影响仍然难以捉摸。
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