Special Column:Celebration of the 70th Anniversary of IGSNRR, CAS

Analysis of Climate Variation of the Weizhoudao Island in Guangxi Province Based on Original Environment during the Last 50 Years

  • 1. Remote Sensing Application and Test Base of National Satellite Meteorology Centre,Nanning 530022;
    2. Guangxi Institute of Meteorology,Nanning 530022,China;
    3. Guangxi Lingshan Meteorological Administration,Lingshan 535400,China

Received date: 2007-08-28

  Revised date: 2008-01-12

  Online published: 2008-07-28


Weizhoudao island meteorological station has been keeping its original environment because of its special geographic position during the last 50 years.In the vicinity of Weizhoudao island,landing surface of Hepu meteorological station has been changed tremendously as urban growth since the 1980s.Based on the data of monthly air temperature and precipitation from both meteorological stations from 1956 to 2005.The difference of climate variations and tendencies of Weizhoudao island have been ananlyzed and compared with Hepu meteorological station during the last 50 years.The climate jump has been examined in terms of 5-year moving average season and annual series of 2 factors using Yamamoto method and Mann-Kendall method.The annual mean temperature was tending to go up and increased 0.615℃ in Weizhoudao island and 1.04℃ in Hepu during the last 50 years.The departure values of annual mean temperature have been positive since 1989.The linear tendency values of annual pecipitation was tending to go up and increased 119.6mm in Weizhoudao island during the last 50 years.The variation of annual precipitaion in Weizhoudao island during the last 50 years had gone throng two increase periods that occurred from 1972 to 1986 and 1993 to 2002.Between them there was a decrease period from 1956 to 1971 and 1987 to 1992 and 2003 to 2005.Climate jumps tested by both Yamamoto method and Mann-Kendall method in Weizhoudao island during the last 50 years are as follows.According to the annual mean temperature,an abrupt warming occurred in the late 1980s.The amplitude of abrupt variation was +0.35℃.The seasonal abrupt warming in spring,summer,autumn and winter all took place in the mid or the late 1980s,and abrupt warming in winter since 1997.The abrupt change of summer and winter precipitation occurred prior to the 1970s.Based on the facts of climate changes of Weizhoudao island,it is held that the abrupt warming of the Weizhoudao island during 50 years probably resulted from keeping original ecosystem environment.

Cite this article

TAN Zong-kun, OU Zhao-rong, HE Peng . Analysis of Climate Variation of the Weizhoudao Island in Guangxi Province Based on Original Environment during the Last 50 Years[J]. JOURNAL OF NATURAL RESOURCES, 2008 , 23(4) : 589 -599 . DOI: 10.11849/zrzyxb.2008.04.006


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