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Influence of plant coverage and environmental variables on pollen productivities:evidence from northern China

Frontiers of Earth Science 2020年第4期14卷 789-802页

作者： Kaixiu Zhang Wen Qin Fang Tian Xianyong Cao Yuecong Li Jule Xiao Wei Ding Ulrike Herzschuh Qinghai Xu College of Resource Environment and Tourism Beijing Key Laboratory of Resource Environment and GISCapital Normal UniversityBeijing100048China Key Laboratory of Alpine Ecology Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing100101China Alpine Paleoecology and Human Adaptation Group(ALPHA) Key Laboratory of Alpine EcologyInstitute of Tibetan Plateau ResearchChinese Academy of Sciences(CAS)Beijing100101China College of Resources and Environment Sciences Hebei Normal UniversityShijiazhuang050024China Key Laboratory of Cenozoic Geology and Environment Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Institute of Geological Sciences PalaeontologyFree University of BerlinBerlin12249Germany Alfred Wegener Institute Helmholtz Center for Polarand Marine Research Research Unit PotsdamPotsdam14473Germany Institute of Earth and Environmental Sciences University of PotsdamPotsdam14476Germany

pollen productivity is a critical parameter in the interpretation of pollen-vegetation relationships,and in the quantitative reconstructions of past vegetation from fossil pollen ***-year monitoring records were collected for 143 pollen traps in various parts of northern China,together with modern vegetation *** pollen productivity Estimates(APPE)were calculated for 11 taxa using the ratio of pollen influx to plant coverage at each applicable sampling site,in which the plants of the target taxon were *** pollen productivity Estimates(RPPE)were calculated for the 11 taxa(taking Poaceae as the reference taxon)at those sites in which each taxon occurred together with *** and Chenopodiaceae were found to have the highest RPPEs and the largest RPPEs ranges,while Pinus and Quercus also had higher RPPEs than Poaceae;Abies,Betula,Larix,Picea and Cyperaceae had relatively low *** in RPPE between different areas may be explained by variations in climatic conditions,plant coverage and land use practices which might influence plant growing *** effect that variations in pollen productivity can have on vegetation reconstructions was demonstrated by applying these distinct RPPEs to reconstructions of Holocene vegetation in the Lake Daihai area(northern China),such as a large range of RPPE produces a large range of plant *** in RPPEs within a single taxon,related to vegetation coverage and climatic conditions,therefore need to be considered in future vegetation reconstructions.

关键词： pollen influx pollen productivity vegetation reconstruction REVEALS model northern China

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