Characteristics of extreme drought in the Poyang Lake Basin in 2022 and implications for future response

被引：0

作者：

Lei S. ^{[1
,2
]}

Shi S. ^{[1
]}

Qu Y. ^{[3
]}

Liu Y. ^{[2
]}

Liao J. ^{[1
]}

Zhang Y. ^{[4
]}

Li S. ^{[2
]}

Dong B. ^{[2
]}

机构：

[1] Jiangxi Water Conservancy Bureau, Nanchang

[2] Jiangxi Academy of Water Science and Engineering, Nanchang

[3] China Institute of Water Resources and Hydropower Research, Beijing

[4] Jiangxi Hydrologic Monitoring Centre, Nanchang

[5] Jiangxi Meteorological Bureau, Nanchang

来源：

Shuili Xuebao/Journal of Hydraulic Engineering | 2023年 / 54卷 / 03期

关键词：

defending strategies; drought disaster characteristics; drought evolution; drought in 2022; Poyang Lake Basin;

D O I：

10.13243/j.cnki.slxb.20220925

中图分类号：

学科分类号：

摘要：

In order to deeply identify the features and impacts of the severe drought in the Poyang Lake Basin in 2022, and to recognize the improvement direction of drought disaster prevention and risk management strategies under the new situation, a multi-factor analysis was conducted on the development process of the drought in 2022. The Standardized Precipitation Index (SPI) was applied to conduct a multi-scale analysis on the inter-annual and in annual evolution characteristics of distribution of the drought in the last 72 years. The results show that; (1) In 2022, the long duration of high temperature, low rainfall and low water level of rivers and lakes all set new records. The drought developed rapidly, affected a large area and lasted for a long time. (2) In the Poyang Lake Basin, there are frequent flood-drought transitions, especially in 2022. The July -October period is the most severe summer and autumn meteorological drought since 1951. (3) Due to the gradual improvement of the defense system, although it suffered the most severe meteorological drought on record, the degree of disaster caused by it was less than that of other severe drought years. (4) The drought in the complex environment involves many and complex factors. In view of the weaknesses exposed in this round of drought, it is necessary to conduct top-down research on drought defense system according to the disaster risk management theory, innovate defense thinking and measures, and improve regional drought defense ability. © 2023 China Water Power Press. All rights reserved.

引用

页码：333 / 346

页数：13