DOI: 10.1007/s11069-020-04422-w
论文题名: Assessment of drought frequency, severity, and duration and its impacts on vegetation greenness and agriculture production in Mediterranean dryland: A case study in Tunisia
作者: Ben Mhenni N. ; Shinoda M. ; Nandintsetseg B.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 3 起始页码: 2755
结束页码: 2776
语种: 英语
中文关键词: Agricultural drought
; Mediterranean dryland
; Meteorological drought
; Soil moisture drought
; Tunisia
; Vegetation drought
英文关键词: agricultural production
; drought
; dryland farming
; environmental impact assessment
; frequency analysis
; social impact assessment
; soil moisture
; vegetation
; Tunisia
; Indicator indicator
英文摘要: Drought is among the highest-impact natural hazards affecting drylands around the world in a warming climate. The Mediterranean region, including Tunisia, is projected to experience the most predominant drying trends worldwide. However, a detailed regional scale study of drought for Tunisia has been limited, hampering an assessment of drought impact on the ecosystem and society. This study explored drought characteristics and its effect on vegetation greenness and agricultural productivity in three vegetation zones of Tunisia during 1982–2011, taking advantage of both meteorological and soil moisture drought indices and identifying the most appropriate index for each zone. The results revealed that meteorological droughts were short and frequent, triggering soil moisture droughts that were long-lasting and intense. The standardized precipitation index was identified as the best indicator of vegetation and agricultural droughts in the Northern forest, while the Palmer Drought Severity Index was best in the Central steppe and Southern desert (no crop data in the Southern desert). The lag-correlation analysis revealed that the response of both vegetation greenness and wheat productivity to droughts was more pronounced and had a longer significant lag in the Central steppe than in the other regions. These results suggest that arable land species (Central steppe and Southern desert), characterized by shallow roots, have a rapid response to rainfall variability when compared with forest species (Northern forest), which have deep roots allowing them an adequate supply of moisture. The region-specific indices identified here will provide a useful measure for drought monitoring and mitigation in Tunisia. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168910
Appears in Collections: 气候变化与战略
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作者单位: Graduate School of Environmental Studies, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8601, Japan; Information and Research Institute of Meteorology, Hydrology, and Environment, Ulaanbaatar, 210646, Mongolia; School of Arts and Sciences, National University of Mongolia, Ulaanbaatar, 14201, Mongolia
Recommended Citation:
Ben Mhenni N.,Shinoda M.,Nandintsetseg B.. Assessment of drought frequency, severity, and duration and its impacts on vegetation greenness and agriculture production in Mediterranean dryland: A case study in Tunisia[J]. Natural Hazards,2021-01-01,105(3)