[1]LIU Yinge,ZHENG Runhe,LONG Yan,et al.Climate Change and Its Effect on Hydrological Elements in the Middle Reaches of Weihe River[J].Research of Soil and Water Conservation,2021,28(02):108-117.
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Climate Change and Its Effect on Hydrological Elements in the Middle Reaches of Weihe River
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 02
Page number:
108-117
Column:
Public date:
2021-02-06
- Title:
- Climate Change and Its Effect on Hydrological Elements in the Middle Reaches of Weihe River
- CLC:
- P467; P333
- DOI:
- -
- Abstract:
- In order to explore the climate change in the middle reaches of Weihe River and its influence on hydrological elements, based on the climatic and hydrological data of the middle reaches of Weihe River from 1970 to 2017, the temporal and spatial variation trend, period and abrupt change characteristics of climatic and hydrological elements in the past 50 years were analyzed by using linear regression, Mann-Kandall test and wavelet analysis. The double cumulative curve method was used to determine the abrupt transition point of runoff, and the cumulative slope change rate method was used to investigate the influence of climate change and human activities on runoff change. The results show that the average annual air temperature, air pressure, vapor pressure and potential evaporation of the middle reaches of Weihe River were 0.349℃/decade,0.96 hPa/decade, 0.11 hPa/decade and 2.66 mm/decade, respectively; wind speed and atmospheric relative humidity showed a decreasing trend of -0.16 m/s and -0.65% per decade, and the variation range of each climate element was larger in winter and spring; except water vapor pressure, all climatic factors had obvious periodic change; the temperature, vapor pressure and atmospheric relative humidity changed significantly in 1996, 1983 and 2003, respectively; the runoff and precipitation in hydrological elements showed a significant downward trend; there was a strong correlation between climatic factors and hydrological factors; the contribution of human activities to the reduction of runoff was greater than that of climate change, but the contribution of climate change has shown an increasing trend in recent years.
- References:
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Last Update:
2021-02-10