干旱区生态环境知识资源中心(Arid): 中国400 mm等降水量变迁与干湿变化研究进展

Arid

	中国400 mm等降水量变迁与干湿变化研究进展
其他题名	Advances in the Study of the 400 mm Isohyet Migrations and Wetness and Dryness Changes on the Chinese Mainland
	高艳红; 许建伟; 张萌; 姜凤友
来源期刊	地球科学进展
ISSN	1001-8166
出版年	2020
卷号	35 期号:11 页码:1101-1112
中文摘要	目前多数全球气候模式的预估结果认为,在变暖背景下,全球水资源会出现干的地方越干,湿的地方越湿的变化分布。由于人口社会经济和自然生态等诸多方面的重要性,未来干旱区、半干旱区的干湿变化受到了国际社会的高度关注,中国干旱半干旱区水资源安全问题也引起党中央、国务院的高度重视。总结了现阶段和未来气候变化情景下,400 mm等降水量线、干燥度指数和帕尔默干旱强度指数等几种干湿指标表征的中国干湿界线变迁以及干旱、半干旱区的面积变化,指出了目前干湿变化研究的主要结论和尚待解决的问题,并提出了未来研究展望。研究表明中国干湿界线及其变化具有鲜明的分段特征,中段比较稳定,东段波动剧烈,西段变化表现出强烈的数据依赖性,包含更多观测数据的资料显示西段稳步西移北抬。干湿变化研究结果也体现出强烈的干旱指标依赖性,在干湿过渡带尤其如此,使用潜在蒸散发的干旱指标对温度变化表现出强烈的依赖性。采用融合更多观测数据的高分辨率资料、耦合先进陆面过程模式的高分辨率动力降尺度结果,以及基于实际蒸散发的干湿分区指标是促进中国西部干湿变化研究的有效途径。
英文摘要	Under the background of global warming,the global water resources were projected to be a distribution of "the rich get richer,the poor get poorer". The dryness and wetness changes in arid and semi-arid areas have attracted great attention of the international community. Based on the present and future climate change scenarios,this study summarized the changes of dryness and wetness boundary and the area of arid and semi-arid areas in China characterized by 400 mm Isohyet,aridity index and Palmer drought index. The main conclusions and problems of dryness and wetness changes in recent decades and future projections were reviewed and summarized. The results show that the dry and wet boundaries and their changes in China have distinct piecewise characteristics;the middle section is relatively stable;the eastern section fluctuates violently;and the western section changes show strong data dependence. The data with more observed ones show that the western section moves steadily westward and northward. The dryness and wetness changes of different drought index analysis are not in line, especially in dry and wet transition zone. The drought index using potential evapotranspiration shows a strong dependence on temperature change. It is suggested that we should use as much observation data as possible,drought index including actual evapotranspiration,advanced land surface processes model to accurately simulate actual evapotranspiration,and high resolution dynamic downscaling results coupled with advanced land surface processes model,to study dryness and wetness changes in China.
中文关键词	400 mm等降水量线 ; 干燥度指数 ; 帕尔默干旱强度指数
英文关键词	400 mm Isohyet Aridity index PDSI
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6886652
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/353395
作者单位	高艳红, 复旦大学大气与海洋科学系/大气科学研究院, 上海 200438, 中国. 张萌, 复旦大学大气与海洋科学系/大气科学研究院, 上海 200438, 中国. 许建伟, 湖南文理学院资源环境与旅游学院, 常德, 湖南 415000, 中国. 姜凤友, 内蒙古呼伦贝尔市气象局, 呼伦贝尔, 内蒙古 021008, 中国.
推荐引用方式 GB/T 7714	高艳红,许建伟,张萌,等. 中国400 mm等降水量变迁与干湿变化研究进展[J],2020,35(11):1101-1112.
APA	高艳红,许建伟,张萌,&姜凤友.(2020).中国400 mm等降水量变迁与干湿变化研究进展.地球科学进展,35(11),1101-1112.
MLA	高艳红,et al."中国400 mm等降水量变迁与干湿变化研究进展".地球科学进展 35.11(2020):1101-1112.