西班牙南部参考水文网络的径流记录中气候驱动的趋势
Climate-driven trends in the streamflow records of a reference hydrologic network in Southern Spain
摘要：
每月径流记录从一组测量站，选择形成一个参考水文网络，与降水和温度数据一起进行分析，以确定在瓜达尔基维尔河流域的径流是否经历了变化，在过去的二十世纪下半叶，可以归因于水文强迫。在研究期间，在参考网络中观测到的径流量在季节和年度尺度上都发生了普遍和显着的减少。然而，年降雨量在统计上没有显著变化。观测到的径流趋势可以归因于土地利用的变化，或表现出的年度潜在蒸散值和降水的季节性分布的统计上显着的变化。在使用基于数据和基于模拟的方法进行的归因工作中，降水的年内再分配被证明是径流变化的主要统计显著气候驱动因素。其他非气候因素，如土地覆盖的变化，减少年径流量的贡献相比之下是微不足道的。
英文摘要：
Monthly streamflow records from a set of gauging stations, selected to form a reference hydrologic network, are analyzed together with precipitation and temperature data to establish whether the streamflows in the Guadalquivir River Basin have experienced changes during the last half of the XXth century that can be attributed to hydrological forcing. The observed streamflows in the reference network have undergone generalized and significant decreases both at seasonal and annual scales during the study period. Annual rainfall, though, did not experienced statistically significant changes. The observed trends in streamflows can be attributed to either land-use changes, or to the statistically significant changes exhibited both by yearly potential evapotranspiration values and by the seasonal distribution of precipitation. In the attribution work conducted using both data-based and simulation-based methods, the intra-annual redistribution of precipitation is shown to be the main statistically significant climate-driver of streamflow change. The contributions of other non-climate factors, such as the change in land cover, to the reduction in annual streamflows are shown to be minor in comparison.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
