Zige Tangco is a meromictic saline lake located on the central Tibetan Plateau. Two parallel cores (ZGTC A-1 and ZGTC A-2) were collected from the lake at a water depth of 25 m during summer 2006. The chronology of core A-1 was reconstructed based on the Constant Initial Concentration (CIC) model of ²¹⁰Pb and three accelerator mass spectrometry (AMS) ages from the chitin fragments. The hard water effect calibration of the sediment ¹⁴C age showed that the reservoir effect ranged from 1655 yr at 1950 AD to 1540 yr at 1610 AD. The hydrological variation in Zige Tangco during the past 800 yr was reconstructed using multi-proxies, including organic and carbonate content, stable isotopes of fine-grained carbonate minerals (< 38.5 µm) and grain-size distribution of the lake sediments. Our results show that there were strong fluctuations in the lake level between 1200 and 1820 AD, and at least three dry periods were recorded between 1235 and 1315 AD, 1410 and 1580 AD, and 1660 and 1720 AD characterized by high carbonate content, abrupt positive shifts of stable isotopes, and high sand content. The low-lake-level periods during the Little Ice Age (LIA) in Zige Tangco correspond to the lower δ¹⁸O values in the Guliya ice core and the lower precipitation reconstructed from tree rings in Delingha. This demonstrated that the summer monsoon on the central Tibetan Plateau weakened during the dry and cold periods, whereas the winter monsoon strengthened. Relatively wetter periods or higher lake levels in Zige Tangco occurred at 1580–1650 AD and 1820–1900 AD. Negative shifts in stable isotopes were related to increased lake levels between 1800 and 1820 AD. Our results also showed that the summer monsoon precipitation on the central Tibetan Plateau was mainly controlled by solar activity during the past 800 yr.

孜格唐错是位于青藏高原中部的一个半混流盐湖。2006 年夏季，在 25 m 水深的湖中采集了两个平行岩心（ZGTC A-1 和 ZGTC A-2）。岩心 A-1 的年代学是根据恒定初始浓度（CIC）模型重建的。²¹⁰ Pb 和三加速器质谱 (AMS) 对几丁质碎片进行年龄测定。^沉积物14 ℃年龄的硬水效应校准表明，水库效应范围为公元1950年的1655年至公元1610年的1540年。利用多代理重建了紫格唐措近800年来的水文变化，包括有机物和碳酸盐含量、细粒碳酸盐矿物（< 38.5 µm）的稳定同位素以及湖泊沉积物的粒度分布。我们的研究结果表明，公元1200年至1820年期间，湖水位出现了强烈的波动，并且在公元1235年至1315年、公元1410年至1580年、公元1660年至1720年之间至少记录了三个干旱期，其特点是碳酸盐含量高、突然正值稳定同位素的变化和高含沙量。子格唐措小冰期（LIA）期间的低湖位时期对应于古里雅冰芯较低的δ ^{18 O值和德令哈树木年轮重建的较低降水量。}这表明青藏高原中部夏季风在干冷期减弱，冬季风增强。子格唐措相对湿润的时期或较高的湖水位发生在公元1580-1650年和公元1820-1900年。公元 1800 年至 1820 年间，稳定同位素的负变化与湖水位上升有关。研究结果还表明，近800年青藏高原中部夏季风降水主要受太阳活动控制。