Temperature Variation and Spatial Difference in the Protected Area of Taibai Mountain

doi:10.3969/j.issn.1000-6362.2016.01.001

Abstract

Abstract:

Based on the data of 15 meteorological stations from the period of 1959 to 2013 around Taibai Mountain and the data of 11 alpine meteorological stations from the period of 2012 to 2014 inside Taibai Mountain protected area, authors used the Kriging, linear regression and Mann-Kendall mutation test method combined with ArcGIS to analyze the variation trend and mutation characteristics of temperature in the protected area, and contrasted the differences in climate change between southern and northern aspect of the conservation area, high altitude area (altitude≥2800m) and overall the protected area of Taibai Mountain. The results showed: (1)there was an upward trend of annual mean temperature in the protected area of Taibai Mountain from1959 to 2013, and linear trend rate was 0.329℃·10y-1. Spatial differences of temperature variation was very significant, southeastern and western regions showed a significant warming trend (P＜0.05, P＜0.01), up to 0.383℃·10y-1. Every seasonal mean temperature was increased; winter warming rate was the fastest while spring was the slowest. (2)According to result of M-K test, a warm abrupt change of the annual mean temperature in overall protected area was occurred in 1998. After 1998, temperature variation rate was increasing rapidly. The proportion of the Area’s significant warming trend reached 86.76%. (3)Analysis of spatial difference indicated: annual mean temperature and change rate of northern aspect was lower than southern aspect in the protected area of Taibai Mountain. In latest 55 years, their linear trend rate were 0.247℃·10y-1and 0.291℃·10y-1. Temperature linear trend rate of high altitude area(0.244℃·10y-1 ) was lower than overall protected area. A warm mutation of the annual mean temperature was appeared in 2001. Temperature of southeastern region raised fast before 2001. Warming rate of western region was declined while central region’s was significantly accelerated after 2001.

Key words: Taibai Mountain, Temperature variation, Spatial difference, Kriging, Temperature change trend rate

LIU Rong-juan, BAI Hong-ying, MA Xin-ping, FENG Lin-lin, QIN Jin, CHENG De-qiang. Temperature Variation and Spatial Difference in the Protected Area of Taibai Mountain[J]. Chinese Journal of Agrometeorology, 2016, 37(01): 1-10.

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