DOI: 10.1016/j.jag.2012.11.003
Scopus记录号: 2-s2.0-84880279171
论文题名: Establishing and assessing the Integrated Surface Drought Index (ISDI) for agricultural drought monitoring in mid-eastern China
作者: Wu J ; , Zhou L ; , Liu M ; , Zhang J ; , Leng S ; , Diao C
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2013
卷: 23, 期: 1 起始页码: 397
结束页码: 410
语种: 英语
英文关键词: Data mining
; Drought
; Drought indices
; ISDI
Scopus关键词: accuracy assessment
; data mining
; drought
; error analysis
; monitoring
; precipitation (climatology)
; spatial distribution
; spatial resolution
; temporal distribution
; vegetation index
; China
英文摘要: Accurately monitoring the temporal, spatial distribution and severity of agricultural drought is an effective means to reduce the farmers' losses. Based on the concept of the new drought index called VegDRI, this paper established a new method, named the Integrated Surface Drought Index (ISDI). In this method, the Palmer Drought Severity Index (PDSI) was selected as the dependent variable; for the independent variables, 12 different combinations of 14 factors were examined, including the traditional climate-based drought indicators, satellite-derived vegetation indices, and other biophysical variables. The final model was established by fully describing drought properties with the smaller average error (relative error) and larger correlation coefficients. The ISDI can be used not only to monitor the main drought features, including precipitation anomalies and vegetation growth conditions but also to indicate the earth surface thermal and water content properties by incorporating temperature information. Then, the ISDI was used for drought monitoring from 2000 to 2009 in mid-eastern China. The results for 2006 (a typical dry year) demonstrate the effectiveness and capability of the ISDI for monitoring drought on both the large and the local scales. Additionally, the multiyear ISDI monitoring results were compared with the actual drought intensity using the agro-meteorological disaster data recorded at the agro-meteorological sites. The investigation results indicated that the ISDI confers advantages in the accuracy and spatial resolution for monitoring drought and has significant potential for drought identification in China. © 2012 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79813
Appears in Collections: 气候变化事实与影响
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作者单位: Academy of Disaster Reduction and Emergency Management, MOCA/MOE, Beijing Normal University, Beijing 100875, China; China National Environmental Monitoring Center, Beijing 100012, China; Department of Geography, University of Maryland, College Park MD 20742, United States; Department of Geography, University at Buffalo, The State University of New York, Buffalo, NY 14261, United States
Recommended Citation:
Wu J,, Zhou L,, Liu M,et al. Establishing and assessing the Integrated Surface Drought Index (ISDI) for agricultural drought monitoring in mid-eastern China[J]. International Journal of Applied Earth Observation and Geoinformation,2013-01-01,23(1)