干旱区生态环境知识资源中心(Arid): Research on Holocene Loess Erosion Associated to Climate Evolution in China

Arid

DOI	10.15244/pjoes/99936
	Research on Holocene Loess Erosion Associated to Climate Evolution in China
	Chen Yao 1,2; Huo Wuxing 3; Qian Hui 1,2; Li Bingcheng 1,2
通讯作者	Chen Yao
来源期刊	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
ISSN	1230-1485
EISSN	2083-5906
出版年	2020
卷号	29 期号:1 页码:409-417
英文摘要	Loess is the carrier for the Chinese nation's survival, and we can accurately know its erosion changes since the Holocene, the current period of geologic time, which is very important to predict future trends. However, there is very limited quantitative research on Holocene climate change and loess erosion intensity. This research takes the Holocene loess depositional sequence of Shaolingyuan in Xi'an at southern loess plateau as the research object to analyze the magnetic susceptibility and stratigraphic age structure of sedimentary sequences, and describe the climate change in different periods. This method uses the sensitivity of pedogenes and fits the precipitation and temperature equation to quantitatively reconstruct the paleoprecipitation and paleotemperature changes since the Holocene, which determines the relationship between soil erosion intensity and precipitation in order to estimate soil erosion intensity since the Holocene period. Results show that the climate change in Xi'an is as follows: 10000 similar to 8400 a B.P. is the cold temperature transition stage; 8400 similar to 7000 a B.P. is the warm-cold fluctuation stage; 7000 similar to 5000 a B.P. is the warm temperature stage; 5000 similar to 3400 a B.P. is the warm-cold violent fluctuation stage; and 3400 a B.P. is the warm-semi-humid and semi-arid stage. The Holocene soil erosion intensity changes with annual average precipitation. At 9700 a B.P., the annual average rainfall is 676.6mm, the Estimate of soil erosion intensity reaches its peak value (1287.7 Mg.km(-2).a(-1)), and the soil erosion intensity will become more serious for some time in the future. This research proposes a new method for estimating soil erosion intensity changes caused by climate change, which not only infers the relationship between soil erosion intensity and climate change, but also provides a theoretical basis for accurately processing the soil and water conservation works in the loess area.
英文关键词	climate evolution loess erosion Shaolingyuan Holocene
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000492020300037
WOS关键词	EASTERN QINLING MOUNTAINS ; SOIL-EROSION ; LUONAN BASIN ; PLATEAU ; DEPOSITS ; RUNOFF ; IMPACTS ; PROVENANCE ; SEDIMENT ; EVENTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312041
作者单位	1.Changan Univ, Sch Environm Sci & Engn, Xian, Shaanxi, Peoples R China; 2.Changan Univ, Minist Educ, Key Lab Subsurface Hydrol & Ecol Effect Arid Reg, Xian, Shaanxi, Peoples R China; 3.Changan Univ, Sch Highways, Xian, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Chen Yao,Huo Wuxing,Qian Hui,et al. Research on Holocene Loess Erosion Associated to Climate Evolution in China[J],2020,29(1):409-417.
APA	Chen Yao,Huo Wuxing,Qian Hui,&Li Bingcheng.(2020).Research on Holocene Loess Erosion Associated to Climate Evolution in China.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,29(1),409-417.
MLA	Chen Yao,et al."Research on Holocene Loess Erosion Associated to Climate Evolution in China".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 29.1(2020):409-417.