基于Copula函数的四川水稻关键生育期高温干旱复合事件时空特征分析

蒲长林, 陈东东, 张玉芳, 王晓东, 邹雨伽

Spatio-temporal characteristics of compound high temperature and drought events during critical rice growth periods in Sichuan Province based on the Copula function

PU Changlin, CHEN Dongdong, ZHANG Yufang, WANG Xiaodong, ZOU Yujia

图8 1981—2022年叙永站水稻孕穗—抽穗期（a、b）、抽穗—成熟期（c、d）SPEI与STI联合累积概率（a、c）及其重现期（b、d） （黑色点为高温干旱复合事件）

Fig.8 Joint cumulative probability (a, c) and corresponding return period (b, d) of SPEI and STI during the booting-heading (a, b) and heading-maturity (c, d) stages of rice at Xuyong Station from 1981 to 2022 (Black dots represent compound high-temperature and drought events)