Temporal and spatial changes of temperature and precipitation in Hexi Corridor during 1955–2011

Auteur(s) et Affiliation(s)

MENG, X.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

Univ. of Chinese Academy of Sciences, Beijing, Chine

ZHANG, S.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

ZHANG, Y.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

WANG, C.

Key Lab. of Water Cycle and Related Land Surface Processes, Inst. of Geographic Sciences and Natural Resources Research, CAS, Beijing, Chine

Univ. of Chinese Academy of Sciences, Beijing, Chine

Description :
This study is focused on the northwestern part of Gansu Province, namely the Hexi Corridor. The aim is to address the question of whether any trend in the annual and monthly series of temperature and precipitation during the period 1955–2011 appears at the scale of this region. The temperature and precipitation variation and abrupt change were examined by means of linear regression, five-year moving average, non-parameter Mann-Kendall test, accumulated variance analysis and Pettitt test method. Conclusions provide evidence of warming and wetting across the Hexi Corridor. The mean annual temperature in Hexi Corridor increased significantly in recent 57 years. The abrupt change phenomenon of the annual temperature was detected mainly in 1986. No consistent abrupt change was detected in precipitation in this study area, but the rainy season precipitation abrupt change was mainly observed in 1968.

Type de document :
Article de périodique

Source :
Journal of geographical sciences. Acta geographica sinica, issn : 1009-637X, 2013, vol. 23, n°. 4, p. 653-667, nombre de pages : 15, Références bibliographiques : 33 ref.

Date :
2013

Editeur :
Pays édition : Chine

Langue :
Anglais