Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.3354/cr01519 |
Effectiveness of drought indices in identifying impacts on major crops across the USA | |
Pena-Gallardo, Marina1; Vicente-Serrano, Sergio M.1; Dominguez-Castro, Fernando1; Quiring, Steven2; Svoboda, Mark3; Begueria, Santiago4; Hannaford, Jamie5 | |
2018 | |
发表期刊 | CLIMATE RESEARCH |
ISSN | 0936-577X |
EISSN | 1616-1572 |
出版年 | 2018 |
卷号 | 75期号:3页码:221-240 |
文章类型 | Article |
语种 | 英语 |
国家 | Spain; USA; England |
英文摘要 | In North America, the occurrence of extreme drought events has increased significantly in number and severity over the last decades. Past droughts have contributed to lower agricultural productivity in major farming and ranching areas across the US. We evaluated the relationship between drought indices and crop yields across the US for the period 1961-2014. In order to assess the correlations with yields from the major cash crops in the country, we calculated several drought indices commonly used to monitor drought conditions, including 4 Palmer-based and 3 multiscalar indices (Standardized Precipitation Index, Standardized Precipitation Evapotranspiration Index, Standardized Precipitation Drought Index). The 3 multiscalar drought indices were aggregated at 1 to 12 mo timescales. Besides the quantification of the similarities or differences be tween these drought indices using Pearson correlation coefficients, we identified spatial patterns illustrating this relationship. The results demonstrate that the flexible multiscalar indices can identify drought impacts on different types of crops for a wide range of time periods. The differences in spatial and temporal distribution of the correlations depend on the crop and timescale analyzed, but can also be found within the same type of crop. The moisture conditions during summer and shorter timescales (1 to 3 mo) turn out to be a determining factor for barley, corn, cotton and soybean yields. Therefore, the use of multiscalar drought indices based on both precipitation and the atmospheric evaporative demand (SPEI and SPDI) seems to be a prudent recommendation. |
英文关键词 | Drought Crop yields Palmer drought indices Standardized Precipitation Index Standardized Precipitation Evapotranspiration Index Standardized Precipitation Drought Index |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446364500004 |
WOS关键词 | SEVERITY INDEX ; WHEAT YIELD ; SPATIAL CHARACTERISTICS ; 20TH-CENTURY DROUGHT ; CLIMATE-CHANGE ; SOIL-MOISTURE ; VARIABILITY ; RISK ; PRECIPITATION ; STRESS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/38646 |
专题 | 气候变化 |
作者单位 | 1.CSIC, IPE, Zaragoza, Spain; 2.Ohio State Univ, Dept Geog, Atmospher Sci Program, Columbus, OH 43210 USA; 3.Univ Nebraska, Natl Drought Mitigat Ctr, Lincoln, NE 68583 USA; 4.CSIC, EEAD, Zaragoza, Spain; 5.Ctr Ecol & Hydrol, Maclean Bldg, Wallingford OX10 8BB, Oxon, England |
推荐引用方式 GB/T 7714 | Pena-Gallardo, Marina,Vicente-Serrano, Sergio M.,Dominguez-Castro, Fernando,et al. Effectiveness of drought indices in identifying impacts on major crops across the USA[J]. CLIMATE RESEARCH,2018,75(3):221-240. |
APA | Pena-Gallardo, Marina.,Vicente-Serrano, Sergio M..,Dominguez-Castro, Fernando.,Quiring, Steven.,Svoboda, Mark.,...&Hannaford, Jamie.(2018).Effectiveness of drought indices in identifying impacts on major crops across the USA.CLIMATE RESEARCH,75(3),221-240. |
MLA | Pena-Gallardo, Marina,et al."Effectiveness of drought indices in identifying impacts on major crops across the USA".CLIMATE RESEARCH 75.3(2018):221-240. |
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