Spatial and temporal assessment of drought in the Northern highlands of Ethiopia

Gebrehiwot, Tagel; Veen, A. van der; Maathuis, B.H.P.

doi:10.1016/j.jag.2010.12.002

Cited by 190 publications

(146 citation statements)

References 48 publications

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“…Drought, as characterised by the absence of rainfall or the late or too early onset of inadequate rain (Gebrehiwot et al 2011), has been associated with Ethiopia for long time. However, in terms of frequency, magnitude and spatial coverage, drought has been more pronounced in recent decades (Alebachew 2011 Fig.…”

Section: The Context: Ethiopiamentioning

confidence: 99%

A gender approach to understanding the differentiated impact of barriers to adaptation: responses to climate change in rural Ethiopia

Mersha

Laerhoven

2016

Reg Environ Change

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While adaptation has received a fair amount of attention in the climate change debate, barriers to adaptation are the focus of a more specific, recent discussion. In this discussion, such barriers are generally treated as having a uniform, negative impact on all actors. However, we argue that the precise nature and impact of such barriers on different actors has so far been largely overlooked. Our study of two drought-prone communities in rural Ethiopia sets out to examine how female-and male-headed households adapt to climate change, particularly focusing on how a variety of barriers influence the choice of adaptation measures to varying extents. To this purpose, we built a conceptual framework based on the Sustainable Livelihood Approach. Data were collected using semi-structured interviews and focus group discussions with male-and female-headed households, community leaders and local extension workers. Our findings suggest that gender-based differences in the choice of adaptation measures at the household level are driven by cultural, social, financial and institutional barriers. Barriers to adaptation-particularly when interacting-have a differentiated impact upon different actors. This outcome hints at the need for donors and policymakers to develop intervention strategies that are sensitive to this fact.

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Section: The Context: Ethiopiamentioning

confidence: 99%

A gender approach to understanding the differentiated impact of barriers to adaptation: responses to climate change in rural Ethiopia

Mersha

Laerhoven

2016

Reg Environ Change

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“…Gebrehiwot et al (2011) applied SPOT Vegetation images to evaluate weather and edaphic droughts in Tigray, northern Ethiopia, finding a good correlation between VCI and SPI (Standardized Precipitation Index).…”

Section: Identification Of Desertification-sensitive Areas In the Bramentioning

confidence: 99%

Identification of Desertification- Sensitive Areas in the Brazilian Northeast Through Vegetation Indices

et al. 2017

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ABSTRACT:The aim of this study was to identify areas susceptible to drought and under desertification in the Brazilian Northeast, more specifically in the states of Alagoas, Pernambuco, and Sergipe. The study was based on the 2000-2014 time period, relative frequency, Vegetation Condition Index (VCI) dataset derived from MOD13Q1 products (vegetation indices derived from the Moderate Resolution Imaging Spectroradiometer sensor). The areas located within the desertification nucleus of Cabrobó, in the southwestern of Pernambuco and surrounding the Águas Belas municipality were considered susceptible to drought and desertification. Some municipalities in the countryside of Alagoas showed a very low relative frequency of VCI data (45-50%), and occurrence of areas between 55-60%.Tthe Sergipe state presented a relative frequency VCI data around 50% only in the Poço Verde municipality. Among the areas with low rates of VCI and the most frequently identified in this research, therefore, with greater frequency of droughts, the Southwestern and the Southern Pernambuco hinterlands were not considered as pilot areas by MMA (Brazilian Environment Ministry) in its desertification studies and were included as susceptible for desertification in this study. The results suggest the use of this methodology to subsidize formulations of public policies with application in land use and land cover studies or sustainable development and environmental risk analysis.

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“…The regional drought analysis is useful for determining the spatial distribution and characteristics of drought and evaluating the most affected areas for a specific drought event (Gebrehiwot et al 2011). Results showed that the NECT region can be divided into three subregions, suggesting that the cluster analysis method can identify spatial areas with different temporal precipitation patterns (Fig.…”

Section: Cluster Analysis: Spatial Variability Of Droughtsmentioning

confidence: 99%

“…Meteorological drought is a deficiency of precipitation in a given region (Gebrehiwot et al 2011). Precipitation amount and variability vary greatly from one station to another.…”

Section: Temporal Drought Patternsmentioning

confidence: 99%

“…The duration of every drought is determined by negative index values. Accumulated totals of negative values of SPI can also be used as a measure of drought severity (Gebrehiwot et al 2011). In this study, a representative sample of the evolution of the SPI with significant annual or seasonal precipitation trends was selected in each cluster (Tonghe in cluster 1, Tongliao in cluster 2 and East Ujimqin Banner in cluster 3).…”

Section: Temporal Drought Patternsmentioning

confidence: 99%

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Spatial and temporal characteristics of droughts in the Northeast China Transect

et al. 2014

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In this study, drought trends and change magnitudes of the Northeast China Transect (NECT) were analyzed using the Mann-Kendall test and Theil-Sen's slope estimator. Meteorological data from 20 meteorological stations of NECT region from 1957 to 2012 were used. Results demonstrated that five stations had significant negative trends in precipitation. The magnitudes of the significant negative trends at the 95 % confidence level varied from -2.41 ± 1.05 mm year -1 at Tonghe station to -1.11 ± 0.51 mm year -1 at Qianguoerluosi station. Analysis of the seasonal precipitation series showed a mix of negative and positive trends. Many stations also exhibited strong contrasting seasonal trends that counterbalanced one other at the yearly level. In addition, cluster analysis based on discrete wavelet transform (DWT) was applied to the standard precipitation index (SPI) series. Results revealed three different and spatially well-defined subregions (east, center and west regions of NECT). Due to the decrease in precipitation from the east to the west, land use varies from forest regions in the east, to agriculture in the center, to pastoral areas in the west. Characteristics of drought events for each representative station of different subregions are explored using temporal evolution of the SPI values. Results showed that severe or extreme droughts occurred in 2001, 2003 in Tonghe, 1980 in Tongliao and 2005 123Nat Hazards (2015) 76:601-614 DOI 10.1007/s11069-014-1507 has great potential for examining spatial coherence of regional drought, which was consistent with not only the precipitation spatial distribution but also the characteristics of land use in the study area. This study not only provides important information on drought variability in the NECT, but also provides useful information for improving water management strategies and planning agricultural practices.

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Spatial and temporal assessment of drought in the Northern highlands of Ethiopia

Cited by 190 publications

References 48 publications

A gender approach to understanding the differentiated impact of barriers to adaptation: responses to climate change in rural Ethiopia

A gender approach to understanding the differentiated impact of barriers to adaptation: responses to climate change in rural Ethiopia

Identification of Desertification- Sensitive Areas in the Brazilian Northeast Through Vegetation Indices

Spatial and temporal characteristics of droughts in the Northeast China Transect

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