Seasonal Runoff Variation in Source Region of the Yangtze River and Its Multi-scale Correlation with Influencing Factors

SHAO Jun; WU Qiong; QIAN Xiao-yan; BU Hui

doi:10.11988/ckyyb.20220432

PDF(6619 KB)

Journal of Changjiang River Scientific Research Institute ›› 2023, Vol. 40 ›› Issue (7) : 172-178. DOI: 10.11988/ckyyb.20220432

Special Column of Scientific Expedition and Research in the Headwaters of the Changjiang River

Seasonal Runoff Variation in Source Region of the Yangtze River and Its Multi-scale Correlation with Influencing Factors

SHAO Jun¹, WU Qiong², QIAN Xiao-yan³, BU Hui¹

Author information +

History +

Abstract

Climate change has greatly impacted the runoff conditions in the source region of the Yangtze River in the past two decades. We analyzed the seasonal runoff variation, seasonal precipitation, and temperature variation based on measured hydro-meteorological data from the Tuotuo River hydrological station and meteorological station from 1960 to 2019. The cross wavelet transform is applied to examine the time-frequency variation and correlation among runoff, precipitation, and air temperature. Results reveal that the runoff of Tuotuo River in spring, summer, and autumn exhibited a significant increasing trend, with abrupt change points concentrated around 2006-2008. The increasing trend of seasonal precipitation was not significant, but the seasonal temperature displayed a marked rise that continues to the present. The correlation between summer runoff and precipitation was the most apparent, followed by autumn and spring. Temperature had a positive correlation with runoff, but it manifested differently on various time scales. Summer and autumn temperatures had the most significant effect on runoff. These findings provide important insights into the evolution law of seasonal runoff and hydrological response in the source region of the Yangtze River under the impacts of climate change.

Key words

seasonal runoff variation / Tuotuo River / precipitation / temperature / cross wavelet transform / multi-scale correlation

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

SHAO Jun, WU Qiong, QIAN Xiao-yan, BU Hui. Seasonal Runoff Variation in Source Region of the Yangtze River and Its Multi-scale Correlation with Influencing Factors[J]. Journal of Changjiang River Scientific Research Institute. 2023, 40(7): 172-178 https://doi.org/10.11988/ckyyb.20220432

References

[1] 陈进. 长江源区水循环机理探讨[J]. 长江科学院院报, 2013, 30(4): 1-5.
[2] 罗玉, 秦宁生, 庞轶舒, 等. 气候变暖对长江源径流变化的影响分析: 以沱沱河为例[J]. 冰川冻土, 2020, 42(3): 952-964.
[3] 罗玉, 秦宁生, 周斌, 等. 长江源区沱沱河流域1961—2011年径流特征及其对降水的滞后效应[J]. 水土保持通报, 2019, 39(2): 22-28.
[4] 朱海涛. 长江源区长序列径流变化规律及其与气象要素的关系分析[J]. 中国农学通报, 2019, 35(22): 123-129.
[5] 李燕, 李其江, 刘希胜, 等. 长江源区径流量变化分析[J]. 水文, 2017, 37(1): 92-95, 32.
[6] 李其江. 长江源径流演变及原因分析[J]. 长江科学院院报, 2018, 35(8): 1-5, 16.
[7] 唐雄朋, 吕海深. 沱沱河流域水文气象要素变化特征分析[J]. 水电能源科学, 2016, 34(12): 37-40.
[8] 杜嘉妮, 蔡宜晴, 王岗. 长江源区径流变化归因分析[J]. 水文, 2021, 41(6): 73-78.
[9] GRINSTED A, MOORE J C, JEVREJEVA S. Application of the Cross Wavelet Transform and Wavelet Coherence to Geophysical Time Series[J]. Nonlinear Processes in Geophysics, 2004, 11(5/6): 561-566.
[10]邵骏. 基于交叉小波变换的水文多尺度相关分析[J]. 水力发电学报, 2013, 32(2): 22-26, 42.
[11]SHAO J, WANG J, LÜ S, et al. Spatial and Temporal Variability of Seasonal Precipitation in Poyang Lake Basin and Possible Links with Climate Indices[J]. Hydrology Research, 2016, 47(S1): 51-68.
[12]ZHANG F, THAPA S, IMMERZEEL W, et al. Water Availability on the Third Pole: a Review[J]. Water Security, 2019, 7: 100033.
[13]WANG Y, ZHANG Y, CHIEW F H S, et al. Contrasting Runoff Trends between Dry and Wet Parts of Eastern Tibetan Plateau[J]. Scientific Reports, 2017, 7: 15458.
[14]CUO L,ZHANG Y,ZHU F,et al. Characteristics and Changes of Streamflow on the Tibetan Plateau: a Review[J]. Journal of Hydrology: Regional Studies,2014,2:49-68.
[15]张建云, 刘九夫, 金君良, 等. 青藏高原水资源演变与趋势分析[J]. 中国科学院院刊,2019,34(11):1264-1273.
[16]李光辉, 习晓环, 岳彩荣, 等. 基于环境小卫星数据的冰川区积雪面积变化及其与温度响应关系研究[J]. 冰川冻土, 2013, 35(3): 630-635.
[17]杨建平, 丁永建, 刘时银, 等. 长江黄河源区冰川变化及其对河川径流的影响[J]. 自然资源学报, 2003, 18(5): 595-602, 645.
[18]长江水利委员会. 第三次长江源综合考察技术成果报告[R]. 武汉: 长江水利委员会,2011.
[19]WU S, YAO Z, HUANG H, et al. Glacier Retreat and Its Effect on Stream Flow in the Source Region of the Yangtze River[J]. Journal of Geographical Sciences, 2013, 23(5): 849-859.
[20]齐冬梅, 李跃清, 陈永仁, 等. 气候变化背景下长江源区径流变化特征及其成因分析[J]. 冰川冻土, 2015, 37(4): 1075-1086.