摘要
随着全球气候变暖和人类活动的增强,青海湖流域生态环境有逐步恶化的趋势,作为维系青藏高原东北部生态安全的重要地区,其生态环境问题不容忽视。在现有生态修复策略的基础上科学选取生态修复树种对该区生态系统修复及可持续发展具有重要意义。基于动态演变视角的第四纪地质学理论,综合分析全新世一万多年以来青海湖流域考古遗址中的碳屑、孢粉等数据,得出在全新世长期存在的树种为柳树、云杉、松属和桦属。结合现代及未来气候特征,筛选出适应未来气候变化背景的优势树种为云杉,备选树种为柳树和桦属。
Under the global warming and human activity enhancing,the ecological environment in Qinghai Lake Basin is gradually deteriorated.As an important area for maintaining ecological security in the northeastern Qinghai-Tibetan Plateau,the problem of local ecological environment in Qinghai Lake is severe,and the necessarity of restoring local ecological system is very urgent.Thus,it is very important and economical to select suitable tree species which will adapt to the future climate warming.In this study,based on the dynamic evolution perspective from the theory of Quaternary science,wood charcoal and pollen records of Qinghai Lake during Holocene were comprehensively analyzed,and the vegetation variations of Qinghai Lake Basin during Holocene were reconstructed.The results show that willow,spruce,pinus,and betula existed a long time in the Qinghai Lake Basin during the entire Holocene.Combined with the modern climate condition and future warming trends of Qinghai Lake Basin,spruce can be selected to be the most suitable species for local ecological restoration in future;willow and betula can be taken as important alterative species.
作者
孙满平
鄂崇毅
魏海成
侯光良
孙永娟
SUN Manping;E Chongyi;WEI Haicheng;HOU Guangliang;SUN Yongjuan(Key Laboratory of Physical Geography and Environmental Processes of Qinghai Province,School of Geographical Science,Qinghai Normal University,Xining 810008,China;Qinghai Provincial Key Laboratory of Geology and Environment of Salt Lake,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China)
出处
《生态科学》
CSCD
2019年第1期57-63,共7页
Ecological Science
基金
青海省自然科学基金(2017-ZJ-901)
国家自然科学基金项目(41761042)
中国科学院西部之光青年学者A类项目
关键词
青海湖流域
孢粉
碳屑
云杉
Qinghai Lake Basin
pollen
wood charcoals
spruce
作者简介
孙满平(1994-),女,河南漯河人,硕士研究生,主要从事第四纪沉积物年代学研究,E-mail:smp13195796958@163.com;通信作者:鄂崇毅,男,博士,教授,主要从事第四纪地质学研究,E-mail:echongyi@163.com.
