摘要
分析了博斯腾湖流域近51 a气温降水变化特征,结果表明:1)近51 a博斯腾湖流域平原区平均温度以0.313℃/10 a的速度上升,高于整个南疆地区,与全疆变化一致;流域山区增温趋势较快,平均以0.328℃/10 a的速度增温,冬季增温显著,暖冬趋势明显;2)近51 a平原区降水以2.639 mm/10 a的速度增加,年际变化比较大,降水量的增加显著于温度的增加.流域山区年平均降水量以13.045 mm/10 a的速度增加,相关系数为0.387;3)温度和降水在平原区没有明显相关性,但在山区温度高时降水量大,温度低时降水量小,呈现明显的正相关;4)平原区温度和降水用Mann-kendall方法检验没有达到突变水平,山区温度在1997年发生了由低向高的突变,降水在1990年发生了由低向高的突变.
The characteristics of temperature and precipitation changes in the Bosten Lake Basin since recent 51 years are analyzed ,the results are as follows：（ 1 ）The long-term annual temperature on decade scale is increased by 0. 313 ℃/10 a in the plain of the Bosten Lake Basin,which is higher than that of the whole south Xinjiang; The annual temperature on decade scale is increased by 0. 328 ℃/10 a in the mountainous region, the temperature increase in winter is significant, and the trend of warming winter is obvious. （2） The annual precipitation on decade scale is increased by 2. 639 mm/10 a in the plain. The precipitation increased significantly to the increase in temperature. The annual precipitation on decade scale is increased by 13. 045 mm/ 10a in the mountainous region. （3）No significant correlation between the different the meteorological elements temperature and precipitation in the plain area;But in the mountains, it is positive correlation. （4）The tests using Mann-Kendall method reveal that there is no sudden climate change in temperature and precipitation in the plain;in the mountainous region, however, the increase of temperature has gotten to the level of sudden climate change since 1997 ,and the increase of precipitation has gotten to the level of sudden climate change since 1990.
出处
《北华大学学报（自然科学版）》
CAS
2013年第4期472-475,共4页
Journal of Beihua University（Natural Science）
基金
国家自然科学基金-新疆联合基金重点项目(U1138302)
新疆干旱区湖泊环境与资源实验室基金项目(XJDX0909-2012-03)
关键词
博斯腾湖流域
气温变化
降水变化
Bosten Lake Basin
temperature change
precipitation change
