Human impact overwhelms long-term climate control of fire in the Yangtze River Basin since 3.0 ka BP

QUATERNARY SCIENCE REVIEWS

卷:230

Article

Pei, Wenqiang^1,3  Wan, Shiming^1,2,4  Clift, Peter D.⁵  Dong, Jiang¹  Liu, Xiting⁶  Lu, Jian¹  Tan, Yang⁷  Shi, Xuefa⁸  Li, Anchun¹ 

[1] Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China

[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Geol, Qingdao 266061, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China

[5] Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA

[6] Ocean Univ China, Coll Marine Geosci, Key Lab Submarine Geosci & Prospecting Technol, Qingdao 266100, Peoples R China

[7] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China

[8] Minist Nat Resources, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China

关键词: Fire history;    Black carbon;    Yangtze river basin;    East China sea;    Holocene;    Anthropocene;   

DOI  :  10.1016/j.quascirev.2020.106165

来源: Elsevier

【 摘 要 】

A high-resolution fire history in the Yangtze River Basin over the past 7.0 ka BP is reconstructed based on the proxy of black carbon of sediment core ECMZ on the continental shelf of the East China Sea in order to reveal the interactions among fire, climate, vegetation and human activity on a regional scale. A comparison of fire activity with climatic and vegetation proxies suggests that changes in fire activity prior to 3.0 ka BP on both millennial- and centennial-timescales were closely related to variations in temperature and precipitation, with more fire during warm and humid periods, suggesting climatic control on regional fire activities. In contrast, the significant decoupling between fire and climate on multi-timescales since similar to 3.0 ka BP implies increasing anthropogenic impact on regional fire activity. There is also a distinct response of fire activity to human disturbance at different time scales. Long-term reduction in regional fire activity since similar to 3.0 ka BP was caused by a general decrease in forest cover with increasing human activity while short-term (centennial-timescale) enhancement in biomass burning usually coincides with periods characterized by increasing human activity associated with population migration or technological advances. (C) 2020 Elsevier Ltd. All rights reserved.

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