Hydrological and biogeochemical resilience of human-dominated watersheds

目前，世界上超过50%的人口生活在城市地区，预计到2030年将增加到60%。在不同尺度上，城市化的特点是不透水表面面积增加，水渗透率降低，地表径流增加。这些自然景观的改变大大改变了时间和规模的河流水文响应降水输入。当雨水或融化的水冲刷不透水的表面时，它会收集污染物并将其带入雨水系统，导致水质下降。为了减缓水流速度，防止多余的物质进入水体，经常采用雨水控制措施。尽管作出了这些努力，但城市发展对河流健康的负面影响仍然存在，而且现在由于更频繁的极端天气事件而加剧。该研究计划的总体目标是促进我们对气候和土地利用变化对人类主导的水文和地球化学的累积影响的理解（

More than 50% of the world's population now lives in urban areas and this is projected to increase to 60% by 2030. Across scales, urbanization is characterized by increases in impervious surface area, reductions in water infiltration rates, and increases in surface runoff. These alterations to the natural landscape drastically alter the timing and magnitude of stream hydrological responses to precipitation inputs. When rain- or melt-water washes over impervious surfaces it collects pollutants and carries them into the stormwater-stream system leading to degraded water quality. To slow water down and prevent excess materials from reaching water bodies, stormwater control measures are often employed. Despite these efforts, the negative impacts of urban development on stream health remain and are now exacerbated by more frequent extreme weather events. The overall goal of this research program is to advance our understanding of the cumulative impacts of climate and land use changes on the hydrology and biogeochemistry of human-dominated (