An ice-core record of vegetation and climate changes in the central Tibetan Plateau during the last 550 years

• 来源期刊: 科学通报(英文版)
• 学科: 地球科学
• 关键词: 沙漠植被 青藏高原 气候变化 中央 冰核 草甸草原 普若岗日冰原 夏季气温
• 年，卷（期）: 2010,（12）
• 所属期刊栏目: ARTICLES
• 页码范围: 1169-1177
• 页数: 9页
• 分类号: P467 S423.1
• 语种: 英文

摘要

We present a 550-year ice-core pollen record with a 5-year resolution from the Puruogangri ice field in the central Tibetan Plateau.Analysis of the relationship between pollen record and instrumental observations suggests that the sum of the steppe and meadow pollen taxa is a good indicator of summer (June-August) temperature,whereas the ratios of Cyperaceae/(Gramineae+Artemisia) [Cy/(G+A)] as well as M/S (meadow to steppe percentages) are indicative of humidity changes in this region.Together with δ18O and...