Spatial-Temporal Variation of Aridity Index of China during 1960–2013
Joint Authors
Huang, Huiping
Han, Yuping
Cao, Mingming
Xiao, Heng
Song, Jinxi
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-12-24
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
Aridity index, as the ration of potential evapotranspiration and precipitation, is an important indicator of regional climate.
GIS technology, Morlet wavelet, Mann-Kendall test, and principal component analysis are utilized to investigate the spatial-temporal variation of aridity index and its impacting factors in China on basis of climate data from 599 stations during 1960–2013.
Results show the following.
(1) Boundaries between humid and semihumid region, and semihumid and semiarid region coincide with 400 mm and 800 mm precipitation contour lines.
(2) Average annual aridity index is between 3.4 and 7.5 and shows decrease trend with a tendency of –0.236 per decade at 99% confidence level.
(3) The driest and wettest month appear in December and July, respectively, in one year.
(4) Periods of longitudinal and latitudinal shift of aridity index 1, 1.5, and 4 contours coordinate are 10 and 25 years, 6 and 26 years, and 5 and 25 years, respectively.
(5) Four principal components which affect aridity index are thermodynamic factors, water and radiation factors, geographical and air dynamic factors, and evaluation factor, respectively.
American Psychological Association (APA)
Huang, Huiping& Han, Yuping& Cao, Mingming& Song, Jinxi& Xiao, Heng. 2015. Spatial-Temporal Variation of Aridity Index of China during 1960–2013. Advances in Meteorology،Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1095353
Modern Language Association (MLA)
Huang, Huiping…[et al.]. Spatial-Temporal Variation of Aridity Index of China during 1960–2013. Advances in Meteorology No. 2016 (2016), pp.1-10.
https://search.emarefa.net/detail/BIM-1095353
American Medical Association (AMA)
Huang, Huiping& Han, Yuping& Cao, Mingming& Song, Jinxi& Xiao, Heng. Spatial-Temporal Variation of Aridity Index of China during 1960–2013. Advances in Meteorology. 2015. Vol. 2016, no. 2016, pp.1-10.
https://search.emarefa.net/detail/BIM-1095353
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1095353