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DOI	10.1002/hyp.13365
	A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)
	Pei, Wei 1; Fu, Qiang 2,3,4; Liu, Dong 2; Li, Tianxiao 2
通讯作者	Fu, Qiang
来源期刊	HYDROLOGICAL PROCESSES
ISSN	0885-6087
EISSN	1099-1085
出版年	2019
卷号	33 期号:5 页码:803-815
英文摘要	A drought index is one of the main methods used for measuring drought and represents the basis of drought monitoring, early warning, and classification. On the basis of an analysis of the advantages and limitations of the Standardized Precipitation Evapotranspiration Index (SPEI), the Standardized Precipitation Crop Evapotranspiration Index (SPCEI), which is a drought index of rainfed agriculture, was constructed in this study. The applicable conditions of the SPCEI were then investigated, and the results showed that the SPCEI was suitable for dryland crops under non-irrigated conditions in arid and semi-arid areas. The difference between the SPEI and SPCEI is analysed. Compared with the SPEI, the SPCEI considers crop evapotranspiration and the crop growth stage and was found to be more suitable for monitoring agricultural drought. Qigihar, which is located in a semi-arid area in western Heilongjiang Province, China, was then analysed as an example. The characteristics of the spatial and temporal variability of regional agricultural drought were analysed based on maize and soybean in dryland areas. The results for the different growth stages of maize and soybean showed that drought intensity is more serious in the initial stage in the middle part. In crop development, mid-season and late season stage, the drought conditions gradually increased from north to south. The drought degree of the two crops at the initial stage gradually increased, and the drought degree at the crop development stage gradually decreased. The main reason is that precipitation gradually increases during the crop development stage.
英文关键词	drought index growth stage Qigihar Rainfed agriculture SPCEI
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000458923700010
WOS关键词	SEVERITY INDEX
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216188
作者单位	1.Northeast Agr Univ, Coll Sci, Harbin 150030, Heilongjiang, Peoples R China; 2.Northeast Agr Univ, Sch Water Conservancy & Civil Engn, Changjiang St 600, Harbin 150030, Heilongjiang, Peoples R China; 3.Northeast Agr Univ, Collaborat Innovat Ctr Promote Grain Prod Heilong, Harbin 150030, Heilongjiang, Peoples R China; 4.Northeast Agr Univ, Key Lab Water Saving Agr, Regular Inst Higher Educ Heilongjiang Prov, Harbin 150030, Heilongjiang, Peoples R China
推荐引用方式 GB/T 7714	Pei, Wei,Fu, Qiang,Liu, Dong,et al. A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)[J],2019,33(5):803-815.
APA	Pei, Wei,Fu, Qiang,Liu, Dong,&Li, Tianxiao.(2019).A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI).HYDROLOGICAL PROCESSES,33(5),803-815.
MLA	Pei, Wei,et al."A drought index for Rainfed agriculture: The Standardized Precipitation Crop Evapotranspiration Index (SPCEI)".HYDROLOGICAL PROCESSES 33.5(2019):803-815.