首页> 外文期刊>International journal of ecohydrology and hydrobiology >Effects of climate change on the environmental flows in the Conchos River (Chihuahua, Mexico)
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Effects of climate change on the environmental flows in the Conchos River (Chihuahua, Mexico)

机译:气候变化对科索斯河(吉娃娃,墨西哥)环境流量的影响

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摘要

This study analyzes the water availability in the Conchos River basin (Northern México) through the amount and frequency of the precipitation. Precipitation is associated with the environmental flows in determining how much of the flow in the river has been altered by the effects of climate change or human influence. Changes in water were determined by two precipitation periods: before (1961–1983) and after (1984–2008), using a climatological mesh database created by Center of Scientific Research and Higher Education of Ensenada. Two periods for their differences in the Standardized Precipitation Index (SPI) was calculated. IHA V7 program was used for the analysis of environmental flows. In the after period, there were significant increases in precipitation during the rainy season, with a substantial decrease in minimum precipitations and in the number of storms. On the other hand, during the dry season, it rained less, making the climate extreme and indicating a change in the humidity patterns. There was a total alteration of the environmental flows of the river. This aspect generated a total loss of the frequency, magnitude, duration, and periodicity of the environmental flows during the year due to the management of the dam for electricity generation, irrigation, and flood control, altering the composition, structure and function of the riparian ecosystem. However, the synergic effect of climate on the water availability was observed. Advantage of determining environmental flows is that decision-makers can know how many changes have been introduced into the river flow patterns by human consumption or by climate change.
机译:本研究分析了沉淀量和频率的康斯科河流域(北方墨西哥)的水可用性。降水与环境流相关,在确定河流中的大部分流动因气候变化或人类影响的影响而改变了河流的变化。水中的变化由两个降水周期确定:在(1961-1983)和(1984-2008)之前,使用由科学研究和高等教育的科学研究中心创建的气候网格数据库。计算标准化降水指数(SPI)差异的两个时期。 IHA V7计划用于对环境流的分析。在后期,雨季期间降水量显着增加,最小沉淀和风暴数量下降。另一方面,在干燥的季节期间,它降低了减少,使气候极端并表明湿度模式的变化。河流环境流量完全改变。由于电力发电,灌溉和防洪,改变了河岸的组成,结构和功能,这一方面产生了频率,幅度,持续时间和环境流量的周期的频率,幅度,持续时间和周期性的周期性,改变了河岸的构图,结构和功能生态系统。然而,人们观察到气候对水可用性的协同作用。确定环境流动的优点是决策者可以知道已经通过人类消费或气候变化引入了河流流动模式的变化。

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