[1]GUO Kunming,XIE Yaowen,WANG Xiaoyun,et al.Characteristics of Spatiotemporal Distribution of Temperature in the Heihe River Basin During the Period 1960-2015[J].Research of Soil and Water Conservation,2020,27(02):253-260.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 02
Page number:
253-260
Column:
Public date:
2020-03-30
- Title:
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Characteristics of Spatiotemporal Distribution of Temperature in the Heihe River Basin During the Period 1960-2015
- Author(s):
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GUO Kunming, XIE Yaowen, WANG Xiaoyun, QIU Tian
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(School of Resources and Environment, Lanzhou University, Lanzhou 730000, China)
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- Keywords:
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spatiotemporal; Mann-Kendall test; wavelet analysis; Heihe River Basin
- CLC:
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P467
- DOI:
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- Abstract:
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In the context of rise of global temperatures, in order to understand the temperature changes in the Heihe River Basin over the past few decades, the monthly average data of 20 meteorological stations in and around the Heihe River Basin during the period 1960—2015 were used to analyze the temporal and spatial distribution characteristics of mean temperatures over different time scales in the Heihe River Basin from 1960 to 2015 by applying the methods of linear tendency rate, moving average, Mann-Kendall test, slidingt test, wavelet analysis and spline function. The results showed that:(1)the annual and the seasonal temperature of the Heihe River Basin showed the significant increase, on the seasonal scale, the temperature increase in winter was the largest, followed by the fall;(2)the annual average lowest temperature and the average lowest temperatures of, autumn and winter in the Heihe River Basin appeared in the 1960s, while the average lowest temperatures of spring and summer appeared in the 1970s;(3)the sudden changes in the average temperature of spring in the Heihe River Basin occurred in the early 21st century, while the sudden changes in the annual average temperature and the sudden changes in the average temperatures of the other three seasons occurred in the 1990s;(4)on the interannual and seasonal scales, the average temperature of the Heihe River Basin had alternated between the cold and the warm on the scale of 26~32 years; the first main period of annual temperature change and the first main period of temperature change of the other three seasons were 29 years except that the first main period of temperature change in winter was 30 years; the temperature in the Heihe River Basin will continue to rise in the next few years;(5)in addition to winter, the annual average temperature and the average temperatures of the other three seasons in the Heihe River Basin gradually decreased with increase of altitude except winter; the temperatures of the other stations increased significantly in other seasons(p<0.05)except the Mazongshan station around the Heihe River in winter; in terms of different seasons, winter contributed the most to the trend of warming, followed by autumn.