Rhythmic nature of tufa deposits and analysis of hydrochemical proxies offer the potential to reconstruct the history of regional palaeo-hydrological and palaeo-climatic change. This paper investigates the tufa deposits of Sparkling Lake in the Jiuzhaigou gully of the eastern Tibetan Plateau (ETP). Detailed analysis of mineral composition, major elements and stable isotope (δ¹³C, δ¹⁸O) distinguished seven “dirty tufa layers” that are characterized by quartz-rich sediments, high kaolinite and high K, Na and Al. Compared with clean tufa deposits, dirty components in the tufa deposits were a result of surface soil erosion activity during strong monsoon rainfall periods within the catchment. The chronology of tufa deposits is established by using radiocarbon (¹⁴C) dating of organic material from the dirty tufa layers. Seven flood-rich periods and eight flood-poor periods during the early and mid-Holocene were recorded by the dirty tufa layers interbedded with clean tufa layers in the Jiuzhaigou gully. The tufa records are more sensitive response to regional hydroclimate change, in comparison with the peat, lake sediments and stalagmite records. The low values of δ¹⁸O and δ¹³C in the dirty tufa layers indicate the flood-rich periods (10310–8390, 7120, 6910, 6340, 5900, 5620, 5020 a BP) were mainly triggered by strong monsoon rainfall events during early and mid-Holocene. Considering the chronological uncertainties and sampling resolution, some other abrupt climate events (i.e, 8200 a BP and 5500 a BP) may be also recorded in the tufa deposits. These results greatly improve our understanding of hydroclimate change in the ETP during the early and mid-Holocene.

石灰岩沉积物的节律性质和对水化学代理的分析为重建区域古水文学和古气候变化的历史提供了潜力。本文研究了青藏高原东部（九寨沟）九寨沟沟中闪闪发光湖的石灰岩沉积物。矿物组成，主要元素和稳定同位素的详细的分析（δ ¹³ C，δ ¹⁸ O）区分为特征的富石英沉积物，高高岭石和高K，Na和铝七“脏凝灰岩层”。与干净的石灰岩沉积相比，石灰岩沉积物中的脏组分是集水区强烈季风降雨期间地表土壤侵蚀活动的结果。利用放射性碳确定了石灰石沉积的年代学（¹⁴C）从肮脏的凝灰岩层上对有机材料进行年代测定。全新世初期和中新世期间，九寨沟沟内夹杂着干净的生石灰粉层，记录了七个洪涝时期和八个贫水时期。与泥炭，湖泊沉积物和石笋记录相比，凝灰岩记录对区域水气候变化的响应更为敏感。δ的值低¹⁸ O和δ ¹³肮脏的凝灰岩层中的C表示洪水泛滥时期（10310-8390、7120、6910、6340、5900、5620、5020 a BP）主要是由全新世早期和中期强烈的季风降雨事件触发的。考虑到时间上的不确定性和采样分辨率，一些其他突然的气候事件（即8200 a BP和5500 a BP）也可能记录在石灰岩沉积物中。这些结果极大地增进了我们对全新世早期和中期ETP中水气候变化的理解。