干旱区生态环境知识资源中心(Arid): 近2 000 a毛乌素沙地沙漠化及成因

Arid

	近2 000 a毛乌素沙地沙漠化及成因
其他题名	Desertification and Its Causes in Mu Us Desert in Recent 2 000 Years
	白壮壮; 崔建新
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2019
卷号	39 期号:2 页码:177-185
中文摘要	历史时期毛乌素沙地发生了沙漠化现象,但对沙漠化过程及成因尚有争议。利用毛乌素沙地风成沙-古土壤沉积的测年数据建立累积频度曲线,重建了沙漠化过程;结合高分辨率气候曲线与历史人类活动记录,对近2 000 a毛乌素沙地沙漠化与气候变化、人类活动的关系进行了探讨。结果表明:风成沙-古土壤沉积的测年数据记录了毛乌素沙地在公元440570、840960、15251890年经历3个沙漠化阶段,均属于温度较低、降水较少的冷干气候,且尘暴频次高;前2次沙漠化时期人口较少,土地开垦面积较小,人类活动程度较低,冷干气候在沙漠化过程中影响显著;第3个沙漠化阶段人口总体处于高压状态,土地开垦面积不断扩大,人类活动强度的增大加剧了沙漠化程度。
英文摘要	In the historical period,desertification occurred in Mu Us Desert,but the stage and cause of desertification of Mu Us Desert are still controversial. The frequency accumulation curve was established by using the chronology data of aeolian sand-paleosoil deposition in Mu Us Desert,and three desertification processes can be drawn which were corresponding to 440-570,840-960,and 1525-1890,respectively. All these periods were all characterized by low temperature,low precipitation and high frequency of dust storms. The relationship between desertification, climate change and human activities in Mu Us Desert in the past 2 000 years was discussed by combining the high-resolution climate curve and historical human activity records. The number of people and Land reclamation area in the first two desertification periods were small,so the cold and dry climate conditions had a significant impact on the desertification process. In the third period,the population increased with a high rate,the area of land reclaimed was constantly expanding. Thus,the increase of human activity intensifies the development of desertification.
中文关键词	毛乌素沙地 ; 沙漠化 ; 气候变化 ; 人类活动
英文关键词	Mu Us Desert desertification climate change human activities
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOSCIENCES MULTIDISCIPLINARY
WOS研究方向	Geology
CSCD记录号	CSCD:6460479
来源机构	陕西师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/239779
作者单位	陕西师范大学西北历史环境与经济社会发展研究院, 西安, 陕西 710119, 中国
推荐引用方式 GB/T 7714	白壮壮,崔建新. 近2 000 a毛乌素沙地沙漠化及成因[J]. 陕西师范大学,2019,39(2):177-185.
APA	白壮壮,&崔建新.(2019).近2 000 a毛乌素沙地沙漠化及成因.中国沙漠,39(2),177-185.
MLA	白壮壮,et al."近2 000 a毛乌素沙地沙漠化及成因".中国沙漠 39.2(2019):177-185.