Respuesta hidrológica del Pirineo central al cambio ambiental proyectado para el siglo XXI

Q3 Social Sciences

Pirineos Pub Date : 2014-12-30 DOI:10.3989/PIRINEOS.2014.169004

J. I. López-Moreno, S. M. Vicente-Serrano, J. Zabalza, J. Revuelto, M. Gilaberte, C. Azorin-Molina, Enrique Morán-Tejeda, J. M. García-Ruiz, Christina L. Tague

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引用次数: 11

Abstract

Streamflows in five Mediterranean mountain headwaters in the central Spanish Pyrenees were projected under various climate and land use change scenarios. Streamflows were simulated using the Regional Hydro-Ecologic Simulation System (RHESSys). The results show that changes in precipitation and temperature could cause a decline of annual streamflow between 13% and 23%, depending on the considered catchment. When the effect of increased forest cover in the basins is added to climate change effects, the decrease in annual streamflow is enhanced up to 19% and 32%. The largest hydrological changes resulting from environmental change are projected mainly in early spring, summer and autumn, when the decline may exceed 40%. Winter is the least affected season by environmental change because of increased runoff as a consequence of reduced storage of water in the snowpack and an earlier onset of the snowmelt, and the lower consumption of water by vegetation during the cold season. The magnitude of hydrological change as a result of the assumed environmental change scenarios may lead to serious impacts on water management and ecology of the studied region, as well as the water availability in the Ebro basin.

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中央比利牛斯山脉对21世纪预计环境变化的水文响应

在不同的气候和土地利用变化情景下，预测了西班牙比利牛斯山脉中部五个地中海山脉源头的河流流量。利用区域水文生态模拟系统(RHESSys)对河流流量进行了模拟。结果表明，降水和温度的变化可能导致年流量下降13%至23%，具体取决于所考虑的集水区。在气候变化效应的基础上加上森林覆盖增加的影响，年流量的减少幅度可达19%和32%。环境变化引起的水文变化主要在初春、夏季和秋季，降幅可能超过40%。冬季是受环境变化影响最小的季节，因为由于积雪中储水量减少和融雪开始较早，以及在寒冷季节植被耗水量较低，导致径流增加。假设的环境变化情景导致的水文变化幅度可能对研究区域的水管理和生态以及Ebro流域的水可用性造成严重影响。

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来源期刊

Pirineos Environmental Science-Ecology

CiteScore

1.20

自引率

0.00%

发文量

审稿时长

28 weeks

期刊介绍： Pirineos. A Journal on Mountain Ecology publishes papers dealing with the dynamics of mountain ecosystems, that is, with processes and relationships established between living beings and their environment, in the highest regions on earth. Therefore it tries to explain the global functioning of mountainous areas and the spatial organization of processes and resources, with an integrated perspective in which man performs an important role.