干旱区生态环境知识资源中心(Arid): 黄土高原黄土的成因:沙尘气溶胶源汇模拟与黄土堆积

Arid

	黄土高原黄土的成因:沙尘气溶胶源汇模拟与黄土堆积
其他题名	The causes of loess formation over Loess Plateau:simulated dust aerosol sources and sinks and loess accumulation
	刘唯佳; 韩永翔; 赵天良
来源期刊	中国环境科学
ISSN	1000-6923
出版年	2014
卷号	34 期号:12 页码:3041-3046
中文摘要	黄土高原是重要的降尘区还是沙尘源区这一科学问题至今未有确切定论.本文利用北半球气溶胶区域气候模式 NARCM,根据1995~2004年10a的模拟数据,分析了中国区域沙尘起沙量、沉降量以及沙尘的盈亏空间分布及风场,得到如下结论:1)沙漠及沙漠化地区是起沙量最大的区域、沉降量高值区集中在沙漠、沙漠化地区及其下风方向.黄土高原起沙量很小,而沉降量远大于起沙量.2)沙尘源区是沙漠及沙漠化地区,其余的地区则是沙尘汇区,降尘量由西北向东南递减.3)黄土高原因太行山和秦岭阻挡,处在最大的沙尘汇区.黄土高原的黄土是冰期和间冰期交替、经过漫长年代沙尘沉降的结果,模拟分析结论为黄土的风成学说提供了有力的证据.
英文摘要	There is a scientific debate argument whether Loess Plateau is an important region of dust aerosol sinks or sources. Based on the 10-year (1995~2004) aerosol simulations of the northern aerosol regional climate model NARCM, the spatial distribution of dust aerosol emissions, depositions and budgets as well as wind field were analyzed. The simulation analysis showed 1) the highest dust emissions appeared in the desert and desertification areas, while the highest dust depositions were concentrated over the desert and desertification areas as well as their immediately downwind region.The dust depositions largely exceeded the dust aerosol emission in Loess Plateau with the low dust emissions. 2) Desert and desertification area were the main dust sources, the rest of areas were dust sinks. Dust depositions declined from the northwest to the Southeast.3) Due to the barrier of the Taihang and Qinling Mountains, the Loess Plateau was the largest dust sink region with the highest depositions. The loess over Loess Plateau was accumulated by dust depositions over the long term evolution of glacial and interglacial periods. The dust aerosol simulation provided a solid evidence for the theory of eolian loess.
中文关键词	黄土 ; 沙尘气溶胶模拟 ; 沙尘盈亏 ; 风成说
英文关键词	loess dust aerosol simulation budgets of dust formation of eolian loess
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES
WOS研究方向	Environmental Sciences & Ecology
CSCD记录号	CSCD:5312992
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/232063
作者单位	南京信息工程大学,气象灾害预报预警与评估协同创新中心, 中国气象局气溶胶与云降水重点开放实验室, 南京, 江苏 210044, 中国
推荐引用方式 GB/T 7714	刘唯佳,韩永翔,赵天良. 黄土高原黄土的成因:沙尘气溶胶源汇模拟与黄土堆积[J],2014,34(12):3041-3046.
APA	刘唯佳,韩永翔,&赵天良.(2014).黄土高原黄土的成因:沙尘气溶胶源汇模拟与黄土堆积.中国环境科学,34(12),3041-3046.
MLA	刘唯佳,et al."黄土高原黄土的成因:沙尘气溶胶源汇模拟与黄土堆积".中国环境科学 34.12(2014):3041-3046.