华北水利水电大学学报（自然科学版）2026，Vol.47Issue(1)：84-94,11.DOI:10.19760/j.ncwu.zk.2026010
1960-2022年洞庭湖流域气温和降水时空演变特征
Spatiotemporal Evolution Characteristics of Temperature and Precipitation in Dongting Lake Basin from 1960 to 2022
摘要
Abstract
[Objective]The study aims to reveal the trends,periodicity,and spatiotemporal evolution characteristics of tem-perature and precipitation in the Dongting Lake Basin over the past 63 years,providing a scientific basis for the prevention of flood and drought disasters in the region.[Methods]The Mann-Kendall method and wavelet analysis were used to analyze the trends,periodicity,and spatial characteristics of temperature and precipitation in the Dongting Lake Basin and its four main river sub-basins,Lishui River,Yuanjiang River,Zijiang River,and Xiangjiang River.[Results](1)From 1960 to 2022,the annual average temperature in the four sub-basins showed an extremely significant increasing trend,while the annual average precipitation showed a non-significant variation trend.Both temperature and precipitation were unevenly distributed within the year.(2)The main cycle of temperature in the four sub-basins was about 20 years.The precipitation periodicity in the Lishui sub-basin was significantly different from the other three sub-basins.Its main cycle of precipitation was 3 years,while the other three sub-basins had a main cycle of about 24 years.(3)The spatial distribution and evolution trends of tem-perature and precipitation across the Dongting Lake Basin were distinctly different.Both temperature and precipitation showed a decreasing trend from southeast to northwest.The overall temperature trend showed an increase of 0.07-0.48℃/(10 years).The spatial distribution of precipitation trends in the Dongting Lake Basin featured a greater difference with a range of-24.34-48.54 mm/(10 years).The precipitation in most areas showed an increasing trend,while decreases occurred in the northwestern and central-southern parts.[Conclusion]The climate of the Dongting Lake Basin over the past 63 years has in-dicated a warming trend,but the trend toward increased precipitation is not obvious.关键词
气温/降水/趋势性/周期性/时空演变/洞庭湖流域Key words
temperature/precipitation/trend/periodicity/spatiotemporal evolution/Dongting Lake Basin分类
天文与地球科学引用本文复制引用
张睿,王乐扬,曾春芬,龙秋波,马昱斐,金君良..1960-2022年洞庭湖流域气温和降水时空演变特征[J].华北水利水电大学学报（自然科学版）,2026,47(1):84-94,11.基金项目
湖南省水利科技项目(XSKJ2023059-06) （XSKJ2023059-06）
"十四五"国家重点研发计划青年科学家项目(2023YFC3081000) （2023YFC3081000）
国家自然科学基金项目(52121006) （52121006）
洞庭湖防洪及水资源保障工程技术研究中心开放基金(HHPDI-KFKT-202304). （HHPDI-KFKT-202304）
