Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-013-0193-8 |
Index-based assessment of agricultural drought in a semi-arid region of Inner Mongolia, China | |
Li, Rui1; Tsunekawa, Atsushi2; Tsubo, Mitsuru2 | |
通讯作者 | Li, Rui |
来源期刊 | JOURNAL OF ARID LAND |
ISSN | 1674-6767 |
EISSN | 2194-7783 |
出版年 | 2014 |
卷号 | 6期号:1页码:3-15 |
英文摘要 | Agricultural drought is a type of natural disaster that seriously impacts food security. Because the relationships among short-term rainfall, soil moisture, and crop growth are complex, accurate identification of a drought situation is difficult. In this study, using a conceptual model based on the relationship between water deficit and crop yield reduction, we evaluated the drought process in a typical rainfed agricultural region, Hailar county in Inner Mongolia autonomous region, China. To quantify drought, we used the precipitation-based Standardized Precipitation Index (SPI), the soil moisture-based Crop Moisture Index (CMI), as well as the Normalized Difference Vegetation Index (NDVI). Correlation analysis was conducted to examine the relationships between dekad-scale drought indices during the growing season (May-September) and final yield, according to data collection from 2000 to 2010. The results show that crop yield has positive relationships with CMI from mid-June to mid-July and with the NDVI anomaly throughout July, but no correlation with SPI. Further analysis of the relationship between the two drought indices shows that the NDVI anomaly responds to CMI with a lag of 1 dekad, particularly in July. To examine the feasibility of employing these indices for monitoring the drought process at a dekad time scale, a detailed drought assessment was carried out for selected drought years. The results confirm that the soil moisture-based vegetation indices in the late vegetative to early reproductive growth stages can be used to detect agricultural drought in the study area. Therefore, the framework of the conceptual model developed for drought monitoring can be employed to support drought mitigation in the rainfed agricultural region of Northern China. |
英文关键词 | drought assessment drought index dekad time scale rainfed agriculture |
类型 | Article |
语种 | 英语 |
国家 | Japan |
收录类别 | SCI-E |
WOS记录号 | WOS:000330233500002 |
WOS关键词 | GREAT-PLAINS ; VEGETATION ; EVAPOTRANSPIRATION ; NDVI |
WOS类目 | Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/183061 |
作者单位 | 1.Tottori Univ, United Grad Sch Agr Sci, Tottori 6808553, Japan; 2.Tottori Univ, Arid Land Res Ctr, Tottori 6800001, Japan |
推荐引用方式 GB/T 7714 | Li, Rui,Tsunekawa, Atsushi,Tsubo, Mitsuru. Index-based assessment of agricultural drought in a semi-arid region of Inner Mongolia, China[J],2014,6(1):3-15. |
APA | Li, Rui,Tsunekawa, Atsushi,&Tsubo, Mitsuru.(2014).Index-based assessment of agricultural drought in a semi-arid region of Inner Mongolia, China.JOURNAL OF ARID LAND,6(1),3-15. |
MLA | Li, Rui,et al."Index-based assessment of agricultural drought in a semi-arid region of Inner Mongolia, China".JOURNAL OF ARID LAND 6.1(2014):3-15. |
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