干旱区生态环境知识资源中心(Arid): 陕西扶风黄土台塬全新世成壤环境变化研究

Arid

	陕西扶风黄土台塬全新世成壤环境变化研究
其他题名	Holocene Pedogensis and Environmental Change on the Loess Tableland in Fufeng County, Shaanxi Province
	陈宝群; 黄春长; 李平华
来源期刊	中国沙漠
ISSN	1000-694X
出版年	2004
卷号	24 期号:2 页码:149-152
中文摘要	通过对陕西扶风全新世黄土剖面的土壤学和地层学研究、磁化率、酸碱度和粒度测定分析,揭示了周原地区全新世成壤环境演变过程.黄土剖面中的埋藏古土壤S0形成于全新世大暖期的温湿环境中,古土壤S0中黄土夹层(Lx)的存在,表明6 000a BP前后季风气候发生转折,在6 000～5 000a BP出现一个干旱阶段,并使得全新世大暖期分裂成为两个主要的温湿阶段.大约从3 100 a BP开始,受全球降温过程的影响,季风气候朝向干旱化方向发展,全新世大暖期的成壤作用被黄土堆积所取代.现代表土大约从1 500a BP开始发育.
英文摘要	The integrative pedological and sedimentary study was carried out in a Holocene loess profiles on the Zhouyuan loess tableland in Fufeng County, Shaanxi Province. The field investigation and the measurement of magnetic susceptibility, pH values and grainsize distribution has reveled the variations of the pedo-logical environment during the last 11 500 years. Corresponding to the Holocene climatic optimum (8 500-3 100 a BP), Paleosol So was developed. The analytical results indicate that this soil is a soil complex. There was an arid phase (6 000-5 000 a BP) represented in the middle of the Holocene climatic optimum, during which a loess bed (L_x) was deposited. Therefore, the Holocene palaeosol So becomes two separated soils (S_0~1 and S_0~2)in this profile. It also shows that the period between 8 500 a BP and 6 000 a BP was the maxmum of the Holocene climatic optimum. From 3 100 a BP when the pre-dynastic Zhou people lived and built their Capital city "Qiyi" on the Zhouyuan loess tableland, the Holocene climatic optimum was ended and the mon-soon climatic became colder-drier. The recent loess (L_0) was accumulated. This is a widespread phenome-non over the Loess Plateau. The modern soil (MS) has been developed since about 1 500 a BP due to the disturbance of cultivation, the modern soil has been well developed in this profile.
中文关键词	全新世 ; 环境演变 ; 季风气候 ; 周原地区
英文关键词	holocene environmental change monsoonal climate zhouyuan region
语种	中文
国家	中国
收录类别	CSCD
WOS类目	GEOLOGY
WOS研究方向	Geology
CSCD记录号	CSCD:1506276
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/2XILL650/205727
作者单位	陕西师范大学旅游与环境学院, 西安, 陕西 710062, 中国
推荐引用方式 GB/T 7714	陈宝群,黄春长,李平华. 陕西扶风黄土台塬全新世成壤环境变化研究[J]. 陕西师范大学,2004,24(2):149-152.
APA	陈宝群,黄春长,&李平华.(2004).陕西扶风黄土台塬全新世成壤环境变化研究.中国沙漠,24(2),149-152.
MLA	陈宝群,et al."陕西扶风黄土台塬全新世成壤环境变化研究".中国沙漠 24.2(2004):149-152.