1957—2013年内蒙古达里诺尔自然保护区气候变化特征  被引量:6

On climate changes around the Dalinor Nature Reserve in Inner Mongolia,1957—2013

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作  者:刘海月[1,2] 沈渭寿[2] 李海东[2] 欧阳琰[2] 

机构地区:[1]南京信息工程大学遥感学院,江苏南京210044 [2]国家环境保护部南京环境科学研究所,江苏南京210042

出  处:《云南大学学报(自然科学版)》2016年第4期586-594,共9页Journal of Yunnan University(Natural Sciences Edition)

基  金:环保公益性行业科研专项(2013467040);江苏省自然科学基金(BK20130103);环境保护部应对气候变化工作预算项目(CC(2015)-9-7)

摘  要:自然保护区是生物多样性保护和应对气候变化的前沿阵地,具有独特而重要的生态功能.笔者以内蒙古达里诺尔自然保护区为研究对象,通过选取保护区周边3个气象站点1957—2013年的日值气象观测数据,利用气候倾向率和Mann-Kendall非参数趋势检验法,分析了保护区近57年的年平均气温、年降水量、干燥度的变化特征,并探讨了保护区的气候变化风险源.结果表明:从年际变化来看,气温呈明显上升趋势,降水呈下降趋势;从年代际变化来看,21世纪初气温最高,降水量最少,气温和降水量的变化趋势显著;从季节变化来看,保护区四季气温变化均呈上升趋势,降水量夏季呈明显下降趋势.干燥度呈缓慢上升趋势,介于0.80~2.56.Nature reserve has been served as one of the most important pathways for biodiversity conservation and climate change addressing.In the paper we have collected daily meteorological observation data from 3 mete- orological stations around the Dalinor Reserve during 1957--2013, and analyzed the changes of annual mean tem- perature, annual precipitation, aridity index in the past 57 years, using linear regression model and Mann-Kendall non-parametric statistical testing.The results show that the annual mean temperature has significantly increased, while the annual precipitation exhibits a decreasing trend during 1957--2013.The highest temperature and lowest precipitation occur red in the beginning of the 21st, and change significantly from the decadal changes.The annual mean temperature shows an upward trend,while annual precipitation exhibits a downward trend in summer.Winter precipitation decreases slightly, and spring and autumn precipitation increases slowly. From 1957 to 2013, the seasonal changes in the aridity index show a slowly increasing trend in the Dalinor Reserve, and the values are between 0.80 and 2.56.

关 键 词:自然保护区 气候变化风险源 趋势分析 Mann-Kendall非参数检验 

分 类 号:P467[天文地球—大气科学及气象学]

 

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