[1]TIAN Lixin,HAN Mei,XU Zehua,et al.Temporal and Spatial Change of Temperature in the Huaihe River Basin During the Past 50 Years and Its Relationship with PDO[J].Research of Soil and Water Conservation,2019,26(06):240-248.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 06
Page number:
240-248
Column:
Public date:
2019-10-17
- Title:
-
Temporal and Spatial Change of Temperature in the Huaihe River Basin During the Past 50 Years and Its Relationship with PDO
- Author(s):
-
TIAN Lixin, HAN Mei, XU Zehua, KONG Xianglun, ZHU Jiqian
-
Collaborative Innovation Center of Human-Nature and Green Development of Universities of Shandong, College of Geography and Environment, Shandong Normal University, Jinan 250358, China
-
- Keywords:
-
Huaihe River Basin; temperature; spatiotemporal analysis; PDO; wavelet analysis
- CLC:
-
P468.1
- DOI:
-
-
- Abstract:
-
Temperature change is one of the main factors which cause the changes of natural landscape and eco-environment. Based on the complete data of daily mean temperature, maximum temperature and minimum temperature of meteorological stations in the Huaihe River Basin from 1965 to 2016, the temporal and spatial variation and periodic characteristics of temperature of the annual mean temperature as well as PDO (Pacific Decadal Oscillation) were quantitatively analyzed by using the linear trend estimation, Mann-Kendall non-parametric test method, continuous wavelet (CWT), cross wavelet Transform (XWT), and wavelet coherence spectrum (WTC) in this study. The results indicate that the annual average temperature, maximum temperature and minimum temperature in the basin increased at different levels during the period 1965-2016, and the increase of annual average minimum temperature was obvious; spatially, the temperature showed the decreasing trend from the south to the north of the basin. The warming trend in different regions of the study area was slightly different. The average temperature in the eastern coastal region of the basin was warmer than that in the western inland area. The increase of the annual average maximum temperature in the southwestern part of the basin was relatively obvious, and the increase of the annual average minimum temperature in the northwest was more obvious. The annual average temperature mutations mainly occurred in 1996, but the abrupt time of annual average maximum temperature and annual average minimum temperature was slightly earlier than that the annual average temperature (1992). The average temperature of the Huaihe River Basin had an interannual oscillation period of 1.3~5.5 years, showing similar characteristic to the PDO index. The cold and warm phase transitions of PDO have also the significant impact on temperature changes in the study area.