吐鲁番及周边地区气候及径流演变特征分析

采用吐鲁番及周边地区6个典型气象站和煤窑沟、阿拉沟2个流域水文站的1960-2012年实测数据,运用Mann-Kendall非参数秩次检验法和Pettitt变点检验法,分析了该地区的气候变化和径流变化趋势。结果表明:1960-2012年,吐鲁番及周边地区的年降水量呈一定的上升趋势,但不显著,平均气温也呈上升趋势,而日照时数和平均相对湿度呈下降趋势;阿拉沟出山径流量呈明显上升趋势,而煤窑沟出山径流量上升趋势不明显;降水量、平均气温、平均相对湿度均与径流量呈正相关关系,而日照时数与径流量呈负相关关系。

Analysis on feature of climate and runoff evolution in Turpan and its surrounding areas

The paper used the measured data from 6 typical meteorological stations and 2 hydrological stations on main streams of Meiyaogou river and Alagou river during period of 1960-2012 and applied Mann-Kendall non-parametric order test method and Pettitt change-point test method to analyze the trends of climate change and runoff. Results showed that from 1960 to 2012, the annual precipitation in Turpan and its surrounding areas showed a certain upward trend but did change significantly. The mean temperature increased while the sunshine duration and the mean relative humidity decreased. The runoff out of the mountains along Alagou river increased obviously while that along Meiyaogou River did not increase obviously. The precipitation, mean temperature and mean relative humidity possessed a positive correlation with runoff, while the sunshine duration had a negative correlation with runoff.