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Effects of Droughts on Two Indiana River Basins' Water Quality and Quantity

机译：旱旱对印第安纳河流域水质和数量的影响

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This research provides information to understand how hydrological and water quality processes respond to climate change by incorporating six climate change scenarios (three General Circulation Models (GCMs) outputs under two Conservation Climate Change scenarios 4.5 and 8.5) for mid- and late century to Soil and Water Assessment Tool (SWAT) model simulations. Two Indiana study basins (White River Basin and Wabash River Basin) that contribute water to the Ohio River (Figure 1), and having areas of 29,000 and 42,700 km2, respectively, were selected to investigate what makes watershed responses to climate change different. These two river basins represent a significant portion of the agricultural land of Indiana. We investigated future changes in availability and proportions of surface and groundwater and then how pollutants are transported to water bodies through different hydrologic pathways including surface runoff, tile drainage, and groundwater. Contributions of surface and groundwater flows to nutrients (N and P) loading and how each hydrologic component reacted to climate change scenarios was quantified through SWAT modeling studies. Recent climate change variations and extremes have created concerns about the future of agricultural and ecohydrologic systems. Heavy precipitation events with increased frequency can cause damage to crops and accelerate soil erosion. In drought-affected areas, land degradation, water stress and crop damage and failure can increase. In this study, drought effectson water quality and quantity through different hydrologic pathways were quantified as well as the effects of weather variability. The most vulnerable areas to drought were identified. We also investigated how projected climate change affects proportions of surface water and groundwater, as well as pollution transport through different hydrologic pathways (groundwater, tile drainage and surface water).
机译：这项研究提供的信息，了解如何水文和水质通过结合（在两种保护气候变化情景4.5和8.5三个一般环流模式（GCM）输出）六种气候变化情景的中期和后期世纪土壤处理应对气候变化和水评估工具（SWAT）模型模拟​​。二印第安纳研究盆地（白色流域和沃巴什河流域），为俄亥俄河（图1）促进水，和29000和42700平方公里有地区，分别选择调查是什么使气候变化的不同流域的响应。这两个流域代表印第安纳州的农业土地的显著部分。我们调查的可用性未来的变化和地表水和地下水的比例，然后污染物是如何通过不同的水文途径，包括地表径流，排水瓷砖和地下水输送到水体。地表水和地下水的捐款流向营养素（N和P）装载和如何每个水文组分反应至气候变化情景通过SWAT建模研究进行定量。最近气候变化的变化和极端创造大约农业和ecohydrologic系统的未来担忧。随着频率的增加强降水事件也可能对作物的损害，加速水土流失。在旱灾地区，土地退化，水资源短缺和作物的伤害和失败会增加。在这项研究中，通过不同的途径水文干旱effectson水质和水量进行量化以及天气变化的影响。干旱最脆弱的地区进行了鉴定。我们还调查了预测的气候变化如何影响通过不同的途径水文（地下水，瓷砖排水和地表水），地表水和地下水，以及污染运输的比例。

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