Reconstructing late Holocene vegetation and fire histories in monsoonal region of southeastern China
Reconstructing late Holocene vegetation and fire histories in monsoonal region of southeastern China
复制标题
重建中国东南季风区全新世晚期植被与火灾历史
DOI：
10.1016/j.palaeo.2013.11.005
复制
发表时间：
2014
期刊：
影响因子：
--
通讯作者：
Cheddadi Rachid
中科院分区：
文献类型：
--
作者：
Huang Kangyou;Zheng Zhuo;Liao Wenbo;Cao Linglong;Zheng Yanwei;Zhang Hua;Zhu Guangqi;Zhang Zhong;Cheddadi Rachid
中国副热带东部是研究东亚夏季风变化的关键区域。多学科研究表明，全新世中晚期中国东南部夏季风强度下降。本文报道了江西井冈山近4000 calyr BP以来的高分辨率花粉记录。根据统计学分析，从岩芯中鉴定出的花粉类群可分为万年青、落叶和湿地三大类群。万年青和落叶针叶花粉组合之间的转换可能是由温度波动引起的，表明3800-3200 cal yr BP和2200-1300 cal yr BP气候相对较冷，3200-2800 cal yr BP和1300-800 cal yr BP气候相对较暖。植被研究表明，一个Alnus占主导地位的协会代表了一个次生林，通常发生和扩大后，反复的森林火灾。从核心的木炭浓度描绘了至少6个主要的森林火灾事件，因为4000 calyr BP，其中大部分是由alnus森林群落的发展。这一结果表明，东亚夏季风在全新世晚期减弱，其相关的水分减少导致了大规模的森林野火。此外，沼泽的快速形成和随后的Alnus湿地群落的发展在~ 550 calyr BP表明湖泊的逐渐干涸，这可能与“小冰期”有关。由于大量燃烧与人类耕作的做法，Alnus达到了最高值，在过去的200年沿着丰富的湿地草本植物，先锋蕨类植物（主要是Dicranopteris）和高木炭浓度。目前的几个急剧的植物区系和气候变化的证据与中国一些朝代的崩溃或开始相吻合，这将需要进一步研究自然和人类文化变化之间的关系。
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 anAlnus-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 anAlnusforest 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 theAlnuswetland 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,Alnusreached its highest values in the last 200 years along with abundant wetland herbs, pioneer ferns (mainlyDicranopteris) 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.
登录
查看更多内容
DOI：
10.1073/pnas.230423297
发表时间：
2000-11
影响因子：
11.1
作者：
C. Perry;K. Hsü
通讯作者：
C. Perry;K. Hsü
DOI：
--
发表时间：
2006
期刊：
Marine Geology & Quaternary Geology
影响因子：
--
作者：
Y. Qian;Z. Cheng;Ma Chunmei;Wang Fu-bao;Zhao Zhi-ping;Zheng Chaogui;Huang Lin-yan;Tian Xiao-si
通讯作者：
Y. Qian;Z. Cheng;Ma Chunmei;Wang Fu-bao;Zhao Zhi-ping;Zheng Chaogui;Huang Lin-yan;Tian Xiao-si
影响因子：
3.4
作者：
HANNAH, L;CARR, JL;LANDERANI, A
通讯作者：
LANDERANI, A
影响因子：
--
作者：
Zhuo Zheng;Jiang-Hai Wang;B. Wang;Chunli Liu;Heping Zou;Hua Zhang;Yun Deng;Yan Bai
通讯作者：
Zhuo Zheng;Jiang-Hai Wang;B. Wang;Chunli Liu;Heping Zou;Hua Zhang;Yun Deng;Yan Bai
影响因子：
64.8
作者：
Yongjin Wang;Hai Cheng;R. Edwards;X. Kong;X. Shao;Shitao Chen;Jiangying Wu;X. Jiang;Xianfeng Wa
通讯作者：
Yongjin Wang;Hai Cheng;R. Edwards;X. Kong;X. Shao;Shitao Chen;Jiangying Wu;X. Jiang;Xianfeng Wa