Drought Analysis and the Characteristics of Hydro-meteorological Changes in the Jinsha River Basin

Xing Qu, Xing Qu, Deng Pan, Deng Pan, Junjun Huo, Junjun Huo, Zhe Yuan, Zhe Yuan, Yuanzhi Tang, Yuanzhi Tang

2021

Abstract

The Jinsha River Basin (JRB) is the most important tributary of the Changjiang River and the most ecological vulnerable region to climate change. Therefore, to better understand the hydro-meteorology characteristics of JRB and enhance hydrological forecasts, a temporal-spatial analysis of historical hydro-meteorological elements and drought characteristics is required. In this study, 45 meteorological stations and 5 hydrologic stations in JRB for the last 60 years of historical data were utilized for analyze the temporal-spatial distribution and trends of hydro-meteorological elements, while drought characteristics in this basin were assessed using SPI values at six-month scales (SPI-6). The results show that: (1) the three daily temperature types (minimum, mean and maximum) and precipitation of the JRB all show an increase from the upper to lower reaches. (2) the Mann-Kendall test analysis of hydro-meteorological elements’ annual values reveals that the mean temperature of 42 stations is rising, while precipitation is rising at 25 stations. The runoff at all five hydrologic stations is increasing. The temperature and precipitation in the upper reaches are the areas with the greatest increase in the JRB, while the precipitation in the lower reaches is the only one that is on a downward trend. (3) In the drought analysis based on SPI-6, the downstream of JRB, which is located in Sichuan and Yunnan provinces, is the region with the most severe drought. There is no visible trend in drought duration at most stations, and the drought magnitude analysis is dominated by a decreasing trend. However, the drought intensity analysis is dominated by an uptrend, especially in the mid- and lower streams.

Paper Citation

in Harvard Style

Qu X., Pan D., Huo J., Yuan Z. and Tang Y. (2021). Drought Analysis and the Characteristics of Hydro-meteorological Changes in the Jinsha River Basin. In Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE, ISBN 978-989-758-560-9, pages 426-434

in Bibtex Style

@conference{wre21,
author={Xing Qu and Deng Pan and Junjun Huo and Zhe Yuan and Yuanzhi Tang},
title={Drought Analysis and the Characteristics of Hydro-meteorological Changes in the Jinsha River Basin},
booktitle={Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,},
year={2021},
pages={426-434},
publisher={SciTePress},
organization={INSTICC},
doi={},
isbn={978-989-758-560-9},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 7th International Conference on Water Resource and Environment - Volume 1: WRE,
TI - Drought Analysis and the Characteristics of Hydro-meteorological Changes in the Jinsha River Basin
SN - 978-989-758-560-9
AU - Qu X.
AU - Pan D.
AU - Huo J.
AU - Yuan Z.
AU - Tang Y.
PY - 2021
SP - 426
EP - 434
DO -