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	Environmental changes and human impacts over the past 1200 years: Evidence from high-resolution pollen records from peat in the Yunnan-Guizhou Plateau, Southwest China
通讯作者	Zhao, Wenwei([email protected]) ; Chen, Chunzhu([email protected])
	Li, Shuming1,2; Wei, Lisi1; Zhao, Wenwei1; Ren, Weihe2; Gu, Qinran3,4; Che, Zixuan1; Cao, Xianyong5; Li, Huan1; Zhang, Xiaojian6; Chen, Chunzhu1
	2024-12-01
发表期刊	PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN	0031-0182
卷号	655页码:14
摘要	Over the past millennium, the understanding of vegetation and climate changes in mountainous regions, driven by both natural and anthropogenic forces, remains unclear. In this study, we provide a high-resolution vegetation record spanning the past 1200 years from a subalpine peatland in the Niangniang Mountains, southwestern China. By analyzing pollen, charcoal, and loss-on-ignition from the peat sediment, we elucidate the interactions between vegetation, fire, and human impact. Our findings reveal that before 1150 CE, the mountains were covered with dense broadleaf forests and experienced minimal human activity. Natural forcings, primarily climatic conditions, drove vegetation succession and forest fires. After 1150 CE, the Human Influence Index (HII) increased sharply, coinciding with a rise in cereal-type pollen. Significant agricultural activities in the southwestern mountainous regions of China began after 1150 CE, which is later than those in the low-altitude lake basins of southwestern China. During the Medieval Climate Anomaly (MCA, 836-1400 CE), the Niangniang Mountains were characterized by warm and humid climatic conditions, a stable forested landscape, and a high peat carbon accumulation rate. Although human activities increased markedly during this period, the arbors did not undergo notable changes, and climate forcings continued to have a greater impact on vegetation than anthropogenic forcings. During the Little Ice Age (LIA, 1400-1800 CE), the regional vegetation landscape transitioned from dense forests to open grasslands as climate conditions became cold and dry, reducing peat carbon accumulation rate. This period also saw increased forest fires and significant human-driven deforestation, with anthropogenic forcings becoming dominant. After 1900 CE, vegetation changes were increasingly influenced by government policies. Comparison with major climate forcings and spectrum analysis have shown that variations in monsoon intensity, regulated by solar and volcanic activity, have influenced the climate and peat depositional environment in the Niangniang Mountains. Our research offers meaningful insights into forest conservation in the mountainous regions of the Yunnan-Guizhou Plateau.
关键词	Pollen Human impact Vegetation dynamics Climate change Southwest China Southwest China
DOI	10.1016/j.palaeo.2024.112540
收录类别	SCI
语种	英语
关键词[WOS]	QUANTITATIVE RELATIONSHIP ; CLIMATE VARIABILITY ; NORTHERN CHINA ; ASIAN MONSOON ; VEGETATION ; HOLOCENE ; LAST ; ASSEMBLAGES ; MOUNTAINS ; EVOLUTION
资助项目	National Key Research and Development Program of China[2022YFF0801501] ; National Natural Science Foundation of China[42171157] ; National Natural Science Foundation of China[42107475] ; National Natural Science Foundation of China[42101146] ; National Natural Science Foundation of China[41907379] ; College Students' Innovation and Entrepreneurship Program of Nantong University, and Foundation of Hunan Province[2023JJ40099] ; College Students' Innovation and Entrepreneurship Program of Nantong University, and Foundation of Hunan Province[23B0678]
WOS研究方向	Physical Geography ; Geology ; Paleontology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS记录号	WOS:001338268700001
项目资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China ; College Students' Innovation and Entrepreneurship Program of Nantong University, and Foundation of Hunan Province
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44442
专题	中国科学院南京地质古生物研究所
通讯作者	Zhao, Wenwei; Chen, Chunzhu
作者单位	1.Nantong Univ, Sch Geog Sci, Nantong 226019, Peoples R China 2.Hengyang Normal Univ, Coll Geog & Tourism, Hengyang 421002, Peoples R China 3.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Modern Palaeobiol & Stratig, Nanjing 210008, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Environm, Grp Alpine Paleoecol & Human Adaptat ALPHA, Beijing 100101, Peoples R China 6.Nanjing Univ, Sch Geog & Ocean Sci, Nanjing 210023, Peoples R China 7.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Shuming,Wei, Lisi,Zhao, Wenwei,et al. Environmental changes and human impacts over the past 1200 years: Evidence from high-resolution pollen records from peat in the Yunnan-Guizhou Plateau, Southwest China[J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,2024,655:14.
APA	Li, Shuming.,Wei, Lisi.,Zhao, Wenwei.,Ren, Weihe.,Gu, Qinran.,...&Zhao, Yan.(2024).Environmental changes and human impacts over the past 1200 years: Evidence from high-resolution pollen records from peat in the Yunnan-Guizhou Plateau, Southwest China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,655,14.
MLA	Li, Shuming,et al."Environmental changes and human impacts over the past 1200 years: Evidence from high-resolution pollen records from peat in the Yunnan-Guizhou Plateau, Southwest China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 655(2024):14.

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