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首页> 外文期刊>Journal of Hydroinformatics >A process-based numerical approach to estimate forest groundwater consumption in flatland petrocalcic soils
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A process-based numerical approach to estimate forest groundwater consumption in flatland petrocalcic soils

机译：基于过程的数值方法来估算平坦岩土土壤森林地下水消费量

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摘要

Grasslands are extensively distributed in flatland areas around the world, such as the Pampas in South America. It is one of the most economically productive landscapes and, as in other regions, they are being replaced by forests at increasing rates. Soil salinization emerges as a negative consequence associated with water deficit and forest groundwater consumption (similar to 250-500 mm/yr, in this region). An assessment of forest groundwater consumption is crucial for risk evaluation of soil salinization on flatland environments. For this aim, numerical modeling based on physical/biological processes and atmospheric boundary conditions was successfully applied in monitored grassland and afforested plots. Modeling results suggested a partial hydraulic disconnection between forest and phreatic aquifer due to the presence of petrocalcic horizons. Forest transpiration estimates were approximately 13% of total groundwater usage. Forest water consumption was then restricted to that soil portions above the petrocalcic horizons. Estimated forest transpiration rates (similar to 723 mm/yr) were similar to and even exceeded those reported in salinized sites with similar features. However, the risk of salinization of these soils was unlikely, because forest transpiration was restricted to the upper soil portions filled with fresh rainwater. The petrocalcic horizon retained water and prevented both deep drainage and, indirectly, soil salinization.
机译：草原广泛分布在世界各地的平坦地区，如南美洲的潘帕斯。它是最经济上最具经济的景观之一，与其他地区一样，他们正在增加森林随着速度的增加。土壤盐渍化出现为与水赤字和森林地下水消费相关的负面后果（类似于250-500 mm / Yr，在该地区）。森林地下水消费评估对于平地环境对土壤盐渍化风险评估至关重要。为此目的，基于物理/生物学过程和大气边界条件的数值建模成功应用于监测的草原和植树造影。造型结果表明由于岩土视野存在，森林和潜水层之间的部分液压断开。森林蒸腾估计值约占地下水总用途的13％。然后森林用水量仅限于岩甲状视野上方的土壤部分。估计的森林蒸腾率（类似于723毫米/毫升）类似于具有相似特征的盐渍位点中报告的甚至超过了这些。然而，由于森林蒸腾限制为填充有新鲜雨水的上部土壤部分，因此不太可能造成这些土壤的盐渍化风险。 Petrocalcic Horizo​​ n保留水并防止深度排水，间接地，土壤盐渍化。

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  • 来源
    《Journal of Hydroinformatics》 |2019年第6期|1130-1146|共17页
  • 作者

    Mujica C. R.; Milione G. M.; Bea S. A.; Gyenge J. E.;

  • 作者单位

    Consejo Nacl Invest Cient & Tecn Av Rivadavia 1917 C1033AAJ Buenos Aires Argentina|Inst Hidrol Llanuras Eduardo J Usunoff Av Republ Italia 780 RA-7300 Azul Buenos Aires Argentina;

    Consejo Nacl Invest Cient & Tecn Av Rivadavia 1917 C1033AAJ Buenos Aires Argentina|Inst Hidrol Llanuras Eduardo J Usunoff Av Republ Italia 780 RA-7300 Azul Buenos Aires Argentina;

    Consejo Nacl Invest Cient & Tecn Av Rivadavia 1917 C1033AAJ Buenos Aires Argentina|Inst Hidrol Llanuras Eduardo J Usunoff Av Republ Italia 780 RA-7300 Azul Buenos Aires Argentina;

    Consejo Nacl Invest Cient & Tecn Av Rivadavia 1917 C1033AAJ Buenos Aires Argentina|EEA Balcarce INTA AER INTA Gral Rodriguez 370 RA-7000 Tandil Buenos Aires Argentina;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    changes in the land uses; forest groundwater consumption; petrocalcic horizons; soil salinization;

    机译：土地使用的变化;森林地下水消费;岩土视野;土壤盐渍化;

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