| 青海高原不同生态功能区气候突变时间的比较分析 |
| |
| 引用本文： | 李红梅,李作伟,王振宇,申红艳.青海高原不同生态功能区气候突变时间的比较分析[J].冰川冻土,2012,34(6):1388-1393. |
| |
| 作者姓名： | 李红梅 李作伟 王振宇 申红艳 |
| |
| 作者单位： | 1. 青海省气候中心, 青海 西宁 810001;
2. 南京信息工程大学, 江苏 南京 210044 |
| |
| 基金项目： | 中国气象局气候变化专项项目“西北极端干旱事件个例库及干旱指标数据集”资助 |
| |
| 摘 要： | 根据地理位置和地貌特征将青海省划分为东部农业区、 环青海湖区、 三江源区和柴达木盆地4个生态功能区, 利用这4个生态功能区1961-2010年的月平均气温和降水量资料, 对年和四季的平均气温及总降水量进行了突变检测.结果表明: 4个生态功能区年平均气温和四季气温都呈显著的上升趋势, 其中冬季气温上升最明显, 其次为秋季, 春季和夏季相对较小.气温突变时间检测表明, 年平均气温为柴达木盆地的突变时间最早, 其次为东部农业区和环湖区, 三江源区突变时间最晚.不同生态功能区四季气温突变时间不尽相同.年降水量除柴达木盆地上升趋势明显外, 其余三个地区变化趋势都不明显; 四季降水量变化趋势除冬季降水量变化明显(除东部农业区)外, 其余三季变化趋势基本不明显.降水量突变信号较气温突变信号弱, 只有个别地区的个别季节降水量发生了突变.
|
| 关 键 词： | 青海高原 气温 降水 气候突变 比较 |
| 收稿时间： | 2012-07-03 |
| 修稿时间： | 2012-10-28 |
Comparative Analysis of the Climate Abrupt Changing Time in Different Ecological Function Regions of Qinghai Province |
| |
| LI Hong-mei,LI Zuo-wei,WANG Zhen-yu,SHEN Hong-yan.Comparative Analysis of the Climate Abrupt Changing Time in Different Ecological Function Regions of Qinghai Province[J].Journal of Glaciology and Geocryology,2012,34(6):1388-1393. |
| |
| Authors: | LI Hong-mei LI Zuo-wei WANG Zhen-yu SHEN Hong-yan |
| |
| Institution: | 1. Qinghai Climate Center, Xining Qinghai 810001, China;
2. Nanjing University ofInformation Science and Technology, Nanjing Jiangsu 210044, China |
| |
| Abstract: | Qinghai Province is divided into the Eastern Agricultural area, the area around Qinghai Lake, area of Three Rivers Sources and the Qaidam Basin according to geographical location and geomorphic features. Annual and seasonal abrupt changes of mean air temperature and total precipitation are detected based on data of monthly mean air temperature and monthly total precipitation from 1961 to 2008. It is found that 1)temperature: The annual and seasonal temperatures are all increasing; temporally, winter is the most significant change season, followed by autumn, spring and summer are less changing. Spatially, the Qaidam Basin is the earliest abrupt changing area in annual mean air temperature, followed by the Eastern Agricultural area and the area around Qinghai Lake, and the latest one is the area of Three Rivers Sources. The abrupt changing time of seasonal mean air temperature is not the same between the four areas. 2) Precipitation: The changing trend of annual precipitation is not obvious, except for the Qaidam Basin, where annual precipitation is increasing. Seasonal precipitation changing is not obvious in the main in spring, summer and autumn, but obvious in winter (except for the Eastern Agricultural area). In addition, the abrupt changing signal of precipitation is weak than that of air temperature (except for a few area in individual season). |
| |
| Keywords: | Qinghai Plateau air temperature precipitation abrupt climate change comparison |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《冰川冻土》浏览原始摘要信息 |
| 点击此处可从《冰川冻土》下载免费的PDF全文 |
|
