Originating in the Tianshan Mountains in arid Central Asia, the natural discharge change of the Naryn River is strongly affected by climate change. As the main source of water for the region, this river is crucial to both the natural environment and the socio-economic development. To extend the discharge record and better understand past and future changes in Naryn River discharge, we developed four tree-ring width chronologies and analyzed the relationship between tree growth and discharge. The resulting reconstruction dates back to 1753 and has an R² of 0.374 (1939–2017). Interannual discharge variations of the Naryn River indicate that 1917 was the driest year of the past 265 years, while 1956 was the wettest. The record also indicates that the majority of extreme flood years occurred in the past century; prior to about 1900 C.E., the discharge of the Naryn River was relatively stable. Since 1900 C.E., discharge volume has gradually increased, as has discharge variability. At decadal time scales, the 2010s are notable for the frequency of major floods, whereas the 1910s were the driest. Between the 1870s and the 1910s, the Naryn River experienced a period of low discharge that continued for nearly half a century. The discharge of the Naryn River over the past 265 years appears to vary over quasi-periods of 60, 21, 11, and 2-4 years, which are driven by large-scale climate systems.

源于中亚干旱地区的天山，纳林河的自然流量变化受到气候变化的强烈影响。作为该地区的主要水源，这条河对自然环境和社会经济发展都至关重要。为了扩展流量记录并更好地了解纳林河流量的过去和将来的变化，我们开发了四种树木年轮宽度年表，并分析了树木生长与流量之间的关系。所得的重建结果可以追溯到1753年，R ²0.374（1939–2017）。纳林河的年际流量变化表明，1917年是过去265年中最干旱的一年，而1956年是最湿的一年。记录还表明，大多数极端洪水年份都发生在上个世纪。大约在公元1900年之前，纳林河的流量相对稳定。自1900年以来，放电量和放电可变性逐渐增加。在十年时间尺度上，2010年的特大洪灾发生频率显着，而1910年代最干旱。在1870年代和1910年代之间，纳林河经历了一段持续了近半个世纪的低流量时期。在过去的265年中，Naryn河的流量似乎在60、21、11和2-4年的准周期内变化，这是由大规模气候系统驱动的。