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Large variations of C-13 values in stalagmites from southeastern China during historical times: implications for anthropogenic deforestation
Zhang, Haiwei1,2; Cai, Yanjun1,2; Tan, Liangcheng1; Cheng, Hai2,3; Qin, Shijiang1; An, Zhisheng1; Edwards, R. Lawrence3; Ma, Le1,4
2015-07-01
Source PublicationBOREAS
ISSN0300-9483
Volume44Issue:3Pages:511-525
SubtypeArticle
Abstract

Variations in speleothem C-13 values can reflect changes in overlying surface vegetation, which, over historical time scales, may represent the influence of human activities. Here, we examined C-13 variations in two stalagmites growing for the last 2200 years in Shennong Cave, Jiangxi Province, SE China. The two C-13 records corroborate well one another and show a prominent 6 parts per thousand enrichment of the C-13 values from AD 700 to 1100. The isotopic equilibrium for modern calcite and negative correlation between O-18 and C-13 values along the growth axis suggest that the influences of kinetic fractionation are negligible. Varied correlations between Mg/Ca and Sr/Ca ratios and divergent changes between C-13 values and Mg/Ca and Sr/Ca ratios from AD 700 to 1100 reveal that the prior calcite precipitation (PCP) and water-rock interaction did not dominate the increase of C-13 values. It is plausible that the obvious C-13 variation was largely influenced by the changes in vegetation cover overlying the cave. Our C-13 results, together with the records of climate and human activity from historical documentary records, suggest that: (i) prior to AD 700, small fluctuations in relatively light C-13 values reflect the presence of lush forest coverage above the cave, which was minimally disturbed by human activities; (ii) during AD 700-1100, the drastic increase in C-13 values indicates persistent and massive deforestation associated with large-scale immigration into northern Jiangxi after the Rebellion of An & Shi (AD 755-763) in the Tang Dynasty and the subsequent development of agriculture and economic activity; and (iii) since AD 1100, fluctuations in relatively high C-13 values suggest that local vegetation during the last millennium has been sparse. Since the Rebellion of An & Shi, southeastern China was progressively developed, coincident with deforestation and vegetation deterioration caused by human disturbance in the form of deforestation and cultivation.

WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1111/bor.12112
WOS KeywordOxygen-isotope ; Paleoenvironmental Significance ; Speleothem Calcite ; Late Pleistocene ; Fujian Province ; Climate-change ; Cave System ; Record ; Carbon ; Delta-c-13
Indexed BySCI
Language英语
WOS Research AreaPhysical Geography ; Geology
WOS SubjectGeography, Physical ; Geosciences, Multidisciplinary
WOS IDWOS:000356626400005
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9302
Collection现代环境研究室
Corresponding AuthorCai, Yanjun
Affiliation1.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China
2.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
3.Univ Minnesota, Dept Earth Sci, Minneapolis, MN 55455 USA
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Haiwei,Cai, Yanjun,Tan, Liangcheng,et al. Large variations of C-13 values in stalagmites from southeastern China during historical times: implications for anthropogenic deforestation[J]. BOREAS,2015,44(3):511-525.
APA Zhang, Haiwei.,Cai, Yanjun.,Tan, Liangcheng.,Cheng, Hai.,Qin, Shijiang.,...&Ma, Le.(2015).Large variations of C-13 values in stalagmites from southeastern China during historical times: implications for anthropogenic deforestation.BOREAS,44(3),511-525.
MLA Zhang, Haiwei,et al."Large variations of C-13 values in stalagmites from southeastern China during historical times: implications for anthropogenic deforestation".BOREAS 44.3(2015):511-525.
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