Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China

Abstract Owing to climate change, agrometeorological disasters are becoming increasingly complex. Here, we analysed the characteristics of combined agrometeorological disaster (CAD) caused by low temperature in annual rice crops in Liaoning Province, China, from 1961 to 2017. We assessed the repeat...

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Autores principales:	Ruipeng Ji, Wenying Yu, Rui Feng, Jinwen Wu, Yushu Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2f8773c61ba9431da5fdea9d8e7eb306
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spelling	oai:doaj.org-article:2f8773c61ba9431da5fdea9d8e7eb3062021-12-02T15:36:30ZIdentification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China10.1038/s41598-021-89227-y2045-2322https://doaj.org/article/2f8773c61ba9431da5fdea9d8e7eb3062021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-89227-yhttps://doaj.org/toc/2045-2322Abstract Owing to climate change, agrometeorological disasters are becoming increasingly complex. Here, we analysed the characteristics of combined agrometeorological disaster (CAD) caused by low temperature in annual rice crops in Liaoning Province, China, from 1961 to 2017. We assessed the repeat occurrence of natural disasters on rice production. The results showed that (1) there were six possible CAD scenarios in a rice growing season. These included two scenarios with one disaster in two periods (OD-1, OD-2), three scenarios with two different disasters (TD-1, TD-2, TD-3) and one with multiple disasters (MD-1). Since 1961, the overall occurrence of the six CAD scenarios showed a downward trend. Among the six scenarios, TD-1 had the greatest distribution and occurred most frequently; (2) three possible single agrometeorological disaster (SAD) scenarios may occur during a rice growing season, delayed cold damage (SAD-d), frost damage at only one stage (SAD-f), sterile-type cold damage at one stage (SAD-s). Since 1961, the SAD-d frequency decreased, whereas, since the mid-1980s, the SAD-f frequency increased; (3) SAD and CAD frequencies showed downward trends, with CAD declining more than SAD. The CAD geographical range and frequency were smaller than those of SAD. Rice damage in SAD-f and OD-1 scenarios showed no significant trend, but appeared to have slightly increased. The main agrometeorological disasters affecting rice production in Liaoning Province were delayed cold damage, frost damage or both; (4) a comparison of the rice yield reduction rates of years in which CAD or SAD occurred in more than 50% of stations in Liaoning Province revealed that the yield reduction rates associated with the former were greater than those associated with the latter. CAD had more types, and the occurrences and impacts were more complicated, than for SAD. Compared with SAD, the effects of CAD may be magnified in rice crops, leading to reduced yields.Ruipeng JiWenying YuRui FengJinwen WuYushu ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-18 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Ruipeng Ji Wenying Yu Rui Feng Jinwen Wu Yushu Zhang Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
description	Abstract Owing to climate change, agrometeorological disasters are becoming increasingly complex. Here, we analysed the characteristics of combined agrometeorological disaster (CAD) caused by low temperature in annual rice crops in Liaoning Province, China, from 1961 to 2017. We assessed the repeat occurrence of natural disasters on rice production. The results showed that (1) there were six possible CAD scenarios in a rice growing season. These included two scenarios with one disaster in two periods (OD-1, OD-2), three scenarios with two different disasters (TD-1, TD-2, TD-3) and one with multiple disasters (MD-1). Since 1961, the overall occurrence of the six CAD scenarios showed a downward trend. Among the six scenarios, TD-1 had the greatest distribution and occurred most frequently; (2) three possible single agrometeorological disaster (SAD) scenarios may occur during a rice growing season, delayed cold damage (SAD-d), frost damage at only one stage (SAD-f), sterile-type cold damage at one stage (SAD-s). Since 1961, the SAD-d frequency decreased, whereas, since the mid-1980s, the SAD-f frequency increased; (3) SAD and CAD frequencies showed downward trends, with CAD declining more than SAD. The CAD geographical range and frequency were smaller than those of SAD. Rice damage in SAD-f and OD-1 scenarios showed no significant trend, but appeared to have slightly increased. The main agrometeorological disasters affecting rice production in Liaoning Province were delayed cold damage, frost damage or both; (4) a comparison of the rice yield reduction rates of years in which CAD or SAD occurred in more than 50% of stations in Liaoning Province revealed that the yield reduction rates associated with the former were greater than those associated with the latter. CAD had more types, and the occurrences and impacts were more complicated, than for SAD. Compared with SAD, the effects of CAD may be magnified in rice crops, leading to reduced yields.
format	article
author	Ruipeng Ji Wenying Yu Rui Feng Jinwen Wu Yushu Zhang
author_facet	Ruipeng Ji Wenying Yu Rui Feng Jinwen Wu Yushu Zhang
author_sort	Ruipeng Ji
title	Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
title_short	Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
title_full	Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
title_fullStr	Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
title_full_unstemmed	Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China
title_sort	identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in liaoning province, china
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/2f8773c61ba9431da5fdea9d8e7eb306
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Identification and characteristics of combined agrometeorological disasters caused by low temperature in a rice growing region in Liaoning Province, China

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