%0 Journal Article
%T Variations of temperature and precipitation in Sanjiang Plain: A case study of Jiansanjiang reclamation areas<br>三江平原气温降水变化分析——以建三江垦区为例
%A SU Xiao-dan
%A LUAN Zhao-qing
%A ZHANG Xue-ping
%A <br>苏晓丹
%A 栾兆擎
%A 张雪萍
%J 地理研究
%D 2012
%I 
%X Temperature and precipitation have great influence on ecological system and social economy.Under the background of the global warming,concerning the regional characteristics of regional land use and land cover change,the climate change in Jiansanjiang reclamation areas was analyzed. According to the monthly data of air temperature and precipitation of 15 meteorological stations from 1965 to 2002 in Jiansanjiang reclamation areas,some classical statistical methods were used to explore the characteristics of climate change,such as trend,correlative correlation,climate variation analyses and climate elements cumulative test curve and so on.The statistics of some climatic factors such as mean temperature,mean maximum temperature,mean minimum temperature and precipitation were gathered in the light of year and season,and their changes during 40 years were analyzed.The results showed that there was a 0.50℃/10a increase in the mean annual temperature in the last 40 years.Seasonal temperature had a rising trend,and the temperature increased by 0.82℃/10a in winter,higher than that in other seasons.In the southern margin area,the increase of temperature was higher than 0.60℃/10a,while in the northeastern part of the region,it was lower than 0.35℃/10a. There was only a slight increasing tendency for annual precipitation,and the tendency ratio was-1.90 mm/10a.Annual precipitation in northwest and southern rim was in the decline.Most of the rest of the regions were precipitation increasing areas.Spring,autumn and winter precipitation presented a reducing tendency except that of summer.Climate elements cumulative test curve and test signal of noise ratio(S/N) were used to analyze climate mutation.The result showed that precipitation mutation occurred in 1980 and 1997,and the precipitation had not a significant abrupt change. The increase of the temperature led to both an increase in crop yields and a crop pattern change,while the decrease of the precipitation caused a reduction in the natural wetland area.Thus the methods of land use were changed.
%K temperature
%K precipitation
%K change tendency
%K abrupt climate change<br>气温
%K 降水
%K 变化趋势
%K 气候突变
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=869B153A4C6B5B85&jid=C0C75E88BA2EE501C8298896F64A711F&aid=21CB0722CA48644FC8969ECA378B3DC1&yid=99E9153A83D4CB11&vid=4AD960B5AD2D111A&iid=DF92D298D3FF1E6E&sid=ED8B09838922B3F8&eid=CDE97535A1E7BEA0&journal_id=1000-0585&journal_name=地理研究&referenced_num=0&reference_num=0