干旱区生态环境知识资源中心(Arid): Effects of Recent Climate Change on Maize Yield in Southwest Ecuador

Arid

DOI	10.3390/atmos12030299
	Effects of Recent Climate Change on Maize Yield in Southwest Ecuador
	Lopez, Gina; Gaiser, Thomas; Ewert, Frank; Srivastava, Amit
通讯作者	Lopez, G ; Srivastava, A (corresponding author), Univ Bonn, Inst Crop Sci & Resource Conservat, D-53115 Bonn, Germany.
来源期刊	ATMOSPHERE
EISSN	2073-4433
出版年	2021
卷号	12 期号:3
英文摘要	In recent years, evidence of recent climate change has been identified in South America, affecting agricultural production negatively. In response to this, our study employs a crop modelling approach to estimate the effects of recent climate change on maize yield in four provinces of Ecuador. One of them belongs to a semi-arid area. The trend analysis of maximum temperature, minimum temperature, precipitation, wind speed, and solar radiation was done for 36 years (from 1984 to 2019) using the Mann-Kendall test. Furthermore, we simulated (using the LINTUL5 model) the counterfactual maize yield under current crop management in the same time-span. During the crop growing period, results show an increasing trend in the temperature in all the four studied provinces. Los Rios and Manabi showed a decreasing trend in radiation, whereas the semi-arid Loja depicted a decreasing precipitation trend. Regarding the effects of climate change on maize yield, the semi-arid province Loja showed a more significant negative impact, followed by Manabi. The yield losses were roughly 40 kg ha-1 and 10 kg ha-1 per year, respectively, when 250 kg N ha-1 is applied. The simulation results showed no effect in Guayas and Los Rios. The length of the crop growing period was significantly different in the period before and after 2002 in all provinces. In conclusion, the recent climate change impact on maize yield differs spatially and is more significant in the semi-arid regions.
英文关键词	LINTUL5 climate change crop model maize yield ecuador semi-arid
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000633327200001
WOS关键词	HEAT-STRESS ; TRENDS ; VARIABILITY ; IMPACT
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/349608
作者单位	[Lopez, Gina; Gaiser, Thomas; Ewert, Frank; Srivastava, Amit] Univ Bonn, Inst Crop Sci & Resource Conservat, D-53115 Bonn, Germany
推荐引用方式 GB/T 7714	Lopez, Gina,Gaiser, Thomas,Ewert, Frank,et al. Effects of Recent Climate Change on Maize Yield in Southwest Ecuador[J],2021,12(3).
APA	Lopez, Gina,Gaiser, Thomas,Ewert, Frank,&Srivastava, Amit.(2021).Effects of Recent Climate Change on Maize Yield in Southwest Ecuador.ATMOSPHERE,12(3).
MLA	Lopez, Gina,et al."Effects of Recent Climate Change on Maize Yield in Southwest Ecuador".ATMOSPHERE 12.3(2021).