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引用本文:肖霞云,沈吉,肖海丰,童国榜.云南鹤庆盆地中更新世以来的孢粉记录及其植被与气候变化.湖泊科学,2006,18(4):369-376. DOI:10.18307/2006.0408
XIAO Xiayun,SHEN Ji,XIAO Haifeng,TONG Guobang.Pollen records and vegetation and climate changes in Heqing Basin, Yunnan Province since middle Pleistocene. J. Lake Sci.2006,18(4):369-376. DOI:10.18307/2006.0408
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云南鹤庆盆地中更新世以来的孢粉记录及其植被与气候变化
肖霞云1,2, 沈吉1, 肖海丰1,2, 童国榜3
1.中国科学院南京地理与湖泊研究所, 南京 210008;2.中国科学院研究生院, 北京 100039;3.中国地质科学院水文地质环境地质研究所, 正定 050803
摘要:
通过对“中国大陆环境钻探计划”首钻—云南鹤庆深钻前155m约800ka以来的岩芯进行孢粉研究,探讨了云南鹤庆盆地中更新世以来的植被演替与古气候变迁.研究表明鹤庆盆地周围山地的植被在约800 kaBP至6.98kaBP之间经历了以松为主的针叶林、山地针阔叶混交林、寒温性针叶林的多次相互演替;从6.98 kaBP开始,植被发生了转折性变化,森林植被迅速退化,以草本为主,此时开始受到人类活动的影响,人类活动表现在砍伐森林和种植农作物等方面.与植被演替相应的古气候可划分为五个大的阶段,包含多次冷暖、干湿旋回.
关键词:  孢粉记录  植被演替  气候变化  中更新世  鹤庆盆地
DOI:10.18307/2006.0408
分类号:
基金项目:国家自然科学重点基金(编号:40331003)资助.
Pollen records and vegetation and climate changes in Heqing Basin, Yunnan Province since middle Pleistocene
XIAO Xiayun1,2, SHEN Ji1, XIAO Haifeng1,2, TONG Guobang3
1.Nanjing Institute of Geography and Limnology, CAS, Nanjing 210008, P. R. China;2.Graduate School, CAS, Beijing 100039, P. R. China;3.Institute of Hydrogeology and Engineering Geology, CAGS, Shijiazhuang 050061, P. R. China
Abstract:
Vegetational succession and climatic change since middle Pleistocene in Heqing Basin in Yunnan Province are discussed according to the sporopollen analysis for the top 155m length core and about 800 kaBP history from Heqing deep drilling core. This core is the first drilling core of Environmental Drilling Programme in Chinese continent. The results show that vegetation in the surrounding mountains in Heqing cathchment experienced many times changes among coniferous forest dominated by Pinus,montane coniferous and broadleaved mixed forest and cool temperate coniferous forest during the period about 800 kaBP to 6. 98 kaBP. From 6. 98 kaBP to today, vegetation has immensely changed, such as forest degraded quickly and vegetation dominated by herbs, when human activities have begun affecting vegetation. Human activities represent disafforestation and planting crops and so on. Climate corresponding to vegetation evolution may be divided into five stages and contains many times cool and warm, dry and humid gyrations since about 800 kaBP.
Key words:  Sporopollen record  vegetational succession  climatic change  middle Pleistocene  Heqing Basin
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