Abstract
Research on the impact of climate change on water resources has attracted the attention of academician and policy makers. This paper tends to analyze the impact of changes in air temperature and rainfall factors on the amount of water resources in the Huai River Basin from 1980 to 2014. Air temperature and rainfall data were collected from six meteorological stations. Hydrological and water resources evaluation data were collected from the Bengbu Hydrological Station in the Huai River Basin. Research findings revealed an increasing trend of average annual air temperature, with the highest increase of 0.293oC recorded at Bengbu in Anhui Province. The western part of the study area has shown a rising rainfall while the eastern part (the middle reaches of the Huai River) witnessed a declining rainfall. The rainfall in the Huai River Basin was significantly influenced by the natural fluctuations as the average rainfall in the study area was in a vaguely declining trend. This resulted in gradual decrease in the quantity of the Basin’s water resources due to decreasing rainfall and rising air temperature. Regression and sensitivity analyses were employed to develop a mathematical model between water resources quantity and changes in air temperature and rainfall. Based on regression analysis findings, changes in rainfall have a much bigger impact on its water resources quantity than changes in its air temperature.
Highlights
Despite the fact that China is ranked as the world sixth country with highest amount of annual runoff after Brazil, Russia, Canada, United States and Indonesia, it faces many water resources problems and challenges
According to (Global Water Partnership, 2015), annual rainfall decreased in Huai River Basin by 6% with an evident mismatch (the water resources distribution was 3.4% from the total annual runoff of 62.2 billion cubic meters According to Huang.et al, (2006) climate change has the potential to seriously affect China’s future national security and sustainable social, economic and ecological development
This study has investigated the impact of climate change, change in air temperature and rainfall on the quantity of water resources in six metrological stations in the Huai River Basin located above Bengbu Station as well as the change in annual runoff in Bengbu Station
Summary
Despite the fact that China is ranked as the world sixth country with highest amount of annual runoff after Brazil, Russia, Canada, United States and Indonesia, it faces many water resources problems and challenges. According to (Global Water Partnership, 2015), annual rainfall decreased in Huai River Basin by 6% with an evident mismatch (the water resources distribution was 3.4% from the total annual runoff of 62.2 billion cubic meters According to Huang.et al, (2006) climate change has the potential to seriously affect China’s future national security and sustainable social, economic and ecological development. This study tends to address the issue of climatic changes in the Huai River Basin in China. Huai River Basin is a major water supply source and the planned passing route for the eastern line of China’s South-North Water Transfer Project (See Figure 1). According to Gao et al (2008) Huai River Basin results in a impacts seriously on people’s life, agricultural and industrial development in the region due to the temporal distribution and deteriorating quality of water resources
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