DOI: 10.1016/j.palaeo.2013.11.005
论文题名: Reconstructing late Holocene vegetation and fire histories in monsoonal region of southeastern China
作者: Huang K. ; Zheng Z. ; Liao W. ; Cao L. ; Zheng Y. ; Zhang H. ; Zhu G. ; Zhang Z. ; Cheddadi R.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2014
卷: 393 起始页码: 102
结束页码: 110
语种: 英语
英文关键词: Charcoal
; East Asian Summer Monsoon
; Late Holocene
; Pollen analysis
; Subtropical China
英文摘要: Eastern subtropical China is a key region for understanding the variability of the East Asian Summer Monsoon (EASM). Multidisciplinary studies in southeastern China have shown that the summer monsoon intensity declined in the mid-late Holocene. We present a high-resolution pollen record of the last 4000. cal. yr BP in Jinggang Mts of Jiangxi Province, southeastern China. The identified pollen taxa from the core can be statistically divided into three groups corresponding to evergreen, deciduous and wetland communities. The transitions between evergreen and deciduous-coniferous pollen associations is likely caused by temperature fluctuations, indicating that climate was relatively cool at 3800-3200. cal. yr BP and 2200-1300. cal. yr BP and warmer at 3200-2800. cal. yr BP and 1300-800. cal. yr BP. The vegetation study suggests that an Alnus-dominant association represents a secondary forest that usually takes place and expand after repeated forest fires. The charcoal concentration from the core depicts at least six major forest fire events since 4000. cal. yr BP, most of which were followed by the development of an Alnus forest community. This result suggests that the EASM weakened toward the late Holocene and that its related decrease in moisture led to large forest wildfires. Furthermore, the rapid formation of a swamp and the subsequent development of the Alnus wetland community at ~. 550. cal. yr BP suggest a gradual drying up of the lake, which was likely related to "the Little Ice Age". As a result of a substantial burning related to an intensification of the human cultivation practices, Alnus reached its highest values in the last 200. years along with abundant wetland herbs, pioneer ferns (mainly Dicranopteris) and high charcoal concentrations. The present evidence of several sharp floristic and climate changes coincides with either the collapse or the beginning of some Chinese dynasties, which will need further research on the relationship between natural and human cultural changes. © 2013. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69495
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Earth Sciences, Sun Yet-san University, Guangzhou 510275, China; School of Life Sciences, Sun Yet-san University, Guangzhou 510275, China; South China Sea Marine Engineering and Environment Institute, SOA, Guangzhou 510300, China; Institute of Geography, Guangzhou 510070, China; Administration Bureau of Jinggangshan National Nature Reserve, Jinggangshan 343600, China; Institut des Sciences de l'Evolution de Montpellier, UMR 5554, CNRS-UM2, 34095 Montpellier cedex 5, France; Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes, Guangzhou 510275, China
Recommended Citation:
Huang K.,Zheng Z.,Liao W.,et al. Reconstructing late Holocene vegetation and fire histories in monsoonal region of southeastern China[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2014-01-01,393