云南师范大学学报（自然科学版）2018，Vol.38Issue(3)：70-78,9.DOI:10.7699/j.ynnu.ns-2018-040
滇东北现代花粉/炭屑组合与植被和火灾关系
Relationship Between Modern Pollen/Charcoal Assemblages and Vegetation/Fire in Northeast Yunnan
摘要
Abstract
Pollen/charcoal analyses on 47 surface samples collected from lakes,reservoirs and ponds in northeast Yunnan to study the relationship between modern pollen/charcoal assemblages and vegetation/fire.Pollen analyses of surface samples show that,arboreal pollen of pollen spectra is dominated by Pinus,following by Alnus,Betula,evergreen Quercus,and Lithocarpus/Castanopsis.And herbaceous pollen is dominated by Poaceae,Polygonaceae,and Cruciferae.Meanwhile,results of pollen analysis also show that,pollen percentages of trees and shrubs are less than those of upland herbs.Our study reveals that modern vegetation is largely affected by human activities,as indicated by results of principal component analysis (PCA) on modern pollen spectra.PCA results show that the first factor influencing the modern pollen assemblages is the intensity of human activities,and the second factor is temperature.Charcoal analyses show a marked difference in charcoal concentrations among lakes,reservoirs and ponds.Charcoal concentrations are not only associated with forest fire frequency and intensity near sampling water bodies,but have a certain relationship with some festivals such as the Torch Festival popularly held in some national minorities also.关键词
滇东北/湖泊/表层花粉谱/炭屑/植被/火灾Key words
Northeast Yunnan/Lakes/Surface pollen spectra/Charcoal/Vegetation/Fire分类
农业科技引用本文复制引用
秦鼎,沈才明,蒙红卫,黄林培..滇东北现代花粉/炭屑组合与植被和火灾关系[J].云南师范大学学报（自然科学版）,2018,38(3):70-78,9.基金项目
国家自然科学基金资助项目(41372191,41601201) （41372191,41601201）
云南省高端科技人才引进资助项目(2013HA024) （2013HA024）
云南省领军人才资助项目(2015HA024) （2015HA024）
云南省科技计划重点资助项目(2014FA005). （2014FA005）
