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《Wetland Science》 2016-02
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Change Characteristics of Average Annual Temperature and Annual Precipitation in Costal Wetland Region of the Yellow River Delta from 1961 to 2010

SONG Debin;YU Junbao;WANG Guangmei;HAN Guangxuan;GUAN Bo;LI Yunzhao;Key Laboratory of Coastal Zone Environment Processes and Ecological Remediation, Chinese Academy of Sciences, Shandong Provincial Key Laboratory of Coastal Environmental Processes, Yantai institute of Coastal Zone Research, Chinese Academy of Sciences;University of Chinese Academy of Sciences;Ludong University;  
Based on interpolation data of daily temperature and precipitation from Daily Dataset of Chinese Terrestrial Climate Data, the general change characteristics of the average annual temperature and annual precipitation during 1961-2010 in costal wetland region of the Yellow River Delta were analyzed with the methods of linear trend analysis, slip anomaly analysis and Mann-Kendall test. The results showed that the average annual temperature increased 1.85 ℃ for 50 years and its linear trend rate reached 0.037 ℃/yr. The annual average temperature changed abruptly in 1993 and then a significant warming period was coming. The accumulated reduction of precipitation reached 121.42 mm for 50 years, which mainly occurred in summer, accounted for 19.9% of average annual precipitation. The days of heavy rainfall and maximum number of days for continues drought decreased significantly, while the frequency and intensity of extreme precipitation kept a stable level. The warming and drought trend with characteristics of temperature rising in winter and drought in summer was obvious in costal wetland region of the Yellow River Delta. The underlying surface change resulting from human activities was an important driving factor. The warming and drying climate has become one of the predominant factors for the regional ecological environment safety.
【Fund】: 山东省高等学校优势学科人才团队培育计划项目;; 中国科学院科技服务网络计划(STS计划)项目(KDJ-EW-STS-127);; 山东省自然科学杰出青年基金项目(JQ201114)资助
【CateGory Index】: P467
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