globalchange  > 气候变化与战略
CSCD记录号: CSCD:5696412
论文题名:
基于SPEI的中国东北地区干旱分区及其气候特征分析
其他题名: Drought characteristics analysis and the zoning based on standardized precipitation evapotranspiration index in Northeast China
作者: 李明1; 王贵文1; 张莲芝2
刊名: 干旱区资源与环境
ISSN: 1003-7578
出版年: 2016
卷: 30, 期:6, 页码:2116-2129
语种: 中文
中文关键词: 东北地区 ; 标准化降水蒸散指数 ; 突变
英文关键词: Northeast China ; standardized precipitation and evapotranspiration index ; abrupt change
WOS学科分类: METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向: Meteorology & Atmospheric Sciences
中文摘要: 由于全球气候变暖引起蒸散的增加,并伴随着降水格局的变化,导致某些地区干旱的加剧。而东北地区位于北半球的中高纬,是受全球气候变暖影响最显著的地区之一。文中利用多时间尺度的标准化降水蒸散指数(SPEI)对东北地区的干旱特征和潜在的干旱风险进行了评估。结果表明: 1)东北大部分地区年降水量呈非显著减少趋势,平均减少速率为4. 51mm/10a。东北地区年均温在过去的52年平均增温速率为0. 31℃ / 10a,达到了alpha = 0. 001显著水平。降水和温度的共同作用导致了东北地区明显的干旱化趋势; 2)根据REOF时空分解的前5个空间模态,可以将东北地区划分为5个干旱亚区: 东北南部、内蒙古东部、黑龙江省东部、东北北部和长白山地区; 3)除长白山地区,其它4个分区都表现出明显的干旱化趋势,突变点大都发生在20世纪90年代。依据旱情进行区域的详细划分是进行干旱监测的一项重要的工作,因此,文中得到的结果对于东北地区气候均质的亚区减灾,水资源管理和预测潜在的干旱灾害气候上有指导意义。
英文摘要: The increase in evapotranspiration and changes in precipitation patterns resulted in the intensification of drought in certain regions under global warming. Northeast China (NEC),located in the mid-high latitudes of the Northern Hemisphere,is one of the regions mostly influenced by global warming. This research evaluated the characteristics and potential risks of droughts over NEC using the multi-scalar standardized precipitation and evapotranspiration index (SPEI). The results indicated that: 1) Annual precipitation showed non-significant decrease trend (4. 51mm/10a) in most areas over NEC. Average annual temperature increased with a significant warming rate of about 0. 31℃ /10a for the entire NEC in the last 52 years. In a word,the sum efforts of the precipitation and the temperature led to an obvious drought trend in NEC. 2) Five spatially well-defined sub-regions were identified,namely,the southern NEC,the eastern Inner Mongolia,the eastern Heilongjiang,the northern NEC and the Changbai Mountains. Each sub-climate region had its own features related with the temporal periodicity of drought conditions. 3) Except the Changbai Mountains,the other ones showed obviously drying trend. The abrupt changes occurred mostly in 1990s. It was a crucial task to carry out an adequate spatial division according to drought behavior for drought monitoring. Therefore,the results obtained in this study will be helpful in the development of mitigation strategies,water resource management and forecasting potential drought hazards within climatically homogeneous areas.
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/150857
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: 1.山西师范大学地理科学学院, 临汾, 山西 041000, 中国
2.山西师范大学图书馆, 临汾, 山西 041000, 中国

Recommended Citation:
李明,王贵文,张莲芝. 基于SPEI的中国东北地区干旱分区及其气候特征分析[J]. 干旱区资源与环境,2016-01-01,30(6):2116-2129
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[李明]'s Articles
[王贵文]'s Articles
[张莲芝]'s Articles
百度学术
Similar articles in Baidu Scholar
[李明]'s Articles
[王贵文]'s Articles
[张莲芝]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[李明]‘s Articles
[王贵文]‘s Articles
[张莲芝]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.