[1]杨庆华,侯献华*,杨振京,等.柴达木盆地西部末次间冰期以来植被特征及其环境变化[J].山地学报,2017,(05):742-752.[doi:10.16089/j.cnki.1008-2786.000274]
 YANG Qinghua,HOU Xianhua*,YANG Zhenjing,et al.Vegetation Characteristics and Environmental Changes since the Last Interglacial Period in Western Qaidam Basin[J].Mountain Research,2017,(05):742-752.[doi:10.16089/j.cnki.1008-2786.000274]
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柴达木盆地西部末次间冰期以来植被特征及其环境变化()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2017年05期
页码:
742-752
栏目:
山地环境
出版日期:
2017-09-30

文章信息/Info

Title:
Vegetation Characteristics and Environmental Changes since the Last Interglacial Period in Western Qaidam Basin
文章编号:
1008-2786-(2017)5-742-11
作者:
杨庆华1侯献华2*杨振京1毛建业3
1.中国地质科学院水文地质环境地质研究所,河北 石家庄 050800;
2.中国地质科学院矿产资源研究所 国土资源部盐湖资源与环境重点实验室,北京100037;
3.青海省柴达木综合地质矿产勘查院, 青海 格尔木 816000
Author(s):
YANG Qinghua1 HOU Xianhua2* YANG Zhenjing1 MAO Jianye3
1.Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, Hebei, China;
2.Institute of Mineral Resources, Chinese Academy of Geological Sciences, Key Laboratory of Resources and Environment of Saline Lake, Ministry of Land and Resources, Beijing 100037, China;
3.Qaidam Comprehensive Geology and Mineral Resources Exploration Institute of Qinghai Province,Golmud 816000, Qinghai, China
关键词:
孢粉分析 植被特征 末次间冰期 气候特征 柴达木盆地
分类号:
Q913.84,P534.63
DOI:
10.16089/j.cnki.1008-2786.000274
文献标志码:
A
摘要:
柴达木盆地干旱已久,其西部深厚的湖相地层记录着环境演变的过程。本文通过对大浪滩ZK06钻孔沉积物孢粉分析,结合铀系测年数据,根据孢粉沉积运移总浓度变化、区域代表性针叶乔木植物与草本植物彼此消长的变化、蕨类植物孢子峰值出现等特征,探讨了本区末次间冰期以来特征时期的植被演替及环境演变,并对MIS5~MIS2各阶段柴达木盆地西部的气候及环境变化进行了区域对比。初步得出柴达木盆地西部末次间冰期以来伴随青藏高原的阶段性隆升效应以及全球变化的影响下,虽然区域总体植被类型更替不太明显,但在湖水咸化的成盐期孢粉浓度很低,反映出干旱的成盐期环境下植被稀少,在湖水淡化的碎屑沉积期孢粉总浓度较高,表明气候转为湿润,盆地周边山地森林面积增加和盆地草原扩张。MIS5阶段以来总体趋势为盐层厚度逐渐增加、碎屑淤泥层厚度逐渐减少、孢粉总浓度逐渐降低、草本植物花粉百分比逐渐减少、乔木植物花粉百分比逐渐增加。由于本区受冰川融水引起河流径流量的变化对湖水供给影响较大,导致该区湖水水质咸化与淡化以及水位升降的变化因素较为复杂。进入MIS1阶段盆地西部大浪滩盐湖完全干涸,中全新世大暖期并未出现湖泊水位上升和湖水淡化现象,可能受区域构造运动的影响控制。

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备注/Memo

备注/Memo:
收稿日期(Received date):2016-10-22; 改回日期(Accepted date):2017-04-18
基金项目(Foundation item):中国地质科学院基本科研业务费专项经费(YYWF201627); 中国地质调查项目(DD20160054)[Basic Scientific Research Special Funds Project of Chinese Academy of Geological Sciences(YYWF201627); Project of China Geological Survey(DD20160054)]
作者简介(Biography):杨庆华(1970-),男,江西瑞金人,工程师,主要从事第四纪地质与环境研究[Yang Qinghua(1970-), male, born in Ruijing, Jiangxi province, research on quaternary geology and environment] E-mail:376108021@qq.com
*通讯作者(Corresponding author):侯献华,副研究员,主要从事盐类资源调查与古环境研究[Hou Xianhua, male, associate professor, research on salt resources survey and paleoenvironment] E-mail: hxh2858@126.com
更新日期/Last Update: 2017-09-30