Emnet Negash

Emnet Negash
Ghent University | UGhent · Department of Geography

MSc

About

28
Publications
106,234
Reads
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60
Citations
Additional affiliations
March 2020 - present
Mekelle University
Position
  • Professor (Assistant)
Education
October 2020 - September 2024
Ghent University
Field of study
  • Physical Geography
April 2016 - October 2016
The Copperbelt University
Field of study
  • Environmental Engineering, Monitoring and Management
October 2014 - July 2017
Mekelle University
Field of study
  • Climate and Society

Publications

Publications (28)
Article
During the 2021 conflict in Tigray (north Ethiopia) crop cultivation has been hampered by warfare. Oxen have been looted and killed, farm inputs and tools destroyed by Ethiopian and Eritrean soldiers. Farmers felt vulnerable out in the open with their oxen. To produce, farmers evaluated risks involved with ploughing and organised lookouts. Overall,...
Article
Full-text available
Integrated watershed management (IWSM) technologies have been implemented around the world, including in the northern highlands of Ethiopia during the last few decades. However, their role in improving soil-health along different geological formations is not well studied. This study was, thus, aimed at quantifying the impact of IWSM on soil-health...
Article
Flood‐based farming is a means of improving crop production in rain‐deficit lowlands. Such spate irrigation systems are growing in importance, although the effects of headwater hydrological deficit on downstream flood farming are lacking evidence. This study investigates the impacts of headwater hydrological deficit on the extent of spate‐irrigated...
Article
Full-text available
Land use and the associated ecosystem service functions vary with changes in agroecological conditions. This study analyzed distribution of ecosystem service values along the agroecological gradient in Borena landscape. Land cover information was extracted from Landsat satellite images; and ecosystem service values estimated using established globa...
Article
Full-text available
The consequences of prolonged precipitation-deficient periods are primarily substantial water deficit. The spatial characteristics of drylands and various socioeconomic factors worsen droughts’ impacts and deepen poverty among agrarian communities, with attendant food security (stability dimension) implications. This study utilizes a combination of...
Experiment Findings
There was hunger in Tigray (north Ethiopia) throughout the most of 2021 due to the effects of the Tigray conflict (which began in early November 2020). Armed forces from Ethiopia, Eritrea, and the neighboring Amhara region fought against the forces of Tigray's regional government in the first half of the year; in the second half of the year, warfar...
Article
Military conflicts strongly affect agricultural activities. This has strong implications for people’s livelihoods when agriculture is the backbone of the economy. We assessed the effect of the Tigray conflict on farming activities using freely available remote sensing data. For detecting greenness, a Normalized Difference Vegetation Index (NDVI) wa...
Article
Full-text available
In this database, we attempt to document the widespread involvement of Ethiopian public universities in the war in Tigray. In general, Ethiopian universities have provided financial and material support to the Ethiopian army and allied forces, practiced discrimination of their students and staff members of Tigrayan origin, including harassment and...
Article
Full-text available
Conversion of native pasturelands to cultivated land led to a decline in soil fertility resulting in low agricultural productivity. This study attempted to investigate the magnitude and rate of pastureland to cultivated land conversion and the associated impact on selected soil properties. The study was conducted in three villages of Ofla district,...
Preprint
Full-text available
At the beginning of November 2020, an armed conflict emerged in Tigray, Ethiopia’s northernmost region. The objective of this ‘Atlas of the Humanitarian Situation’ is to document and map the situation in which approximately 6 million Tigrayans currently find themselves. For this, we contacted key informants in different districts of Tigray to colle...
Conference Paper
Full-text available
Conflict has deep historical roots in the horn of Africa, particularly in Ethiopia. Such conflicts often go hand in hand with humanitarian catastrophes including famine and mass-displacement (Annys et al. 2021). The Tigray region of Ethiopia has experienced such conflict induced catastrophes in the 1984/85 (Deckers et al. 2020), and now again (Nyss...
Conference Paper
Full-text available
At the beginning of November 2020, after months of rising political tensions, an armed conflict emerged between the Government of Ethiopia and the - now ousted - Tigray Regional Government. As the conflict arose in the aftermath of a destructive locust plague and on top of the ongoing covid-19 pandemic, soon the realization came that the conflict w...
Conference Paper
Full-text available
Topoclimate, orographic rains on windward slopes and leeward rain shadow control the rainfall variability in tropical mountains (Van den Hende et al., 2021). Such rainfall variability has a substantial societal impact. For instance, they can cause differences in the wealth of rain-fed agriculture farmers among the windward and leeward sides of the...
Book
Full-text available
At the beginning of November 2020, an armed conflict emerged in Tigray, Ethiopia’s northernmost region, in the aftermath of a destructive locust plague and in the context of the ongoing COVID-19 pandemic. In the conflict, the Ethiopian National Defence Force (ENDF) and its allies – formal and informal military factions of the adjacent Amhara region...
Presentation
Event website: https://cfas.howard.edu/tigray, and Event recording: https://www.youtube.com/watch?v=_eivJjTWqmc
Article
Ethiopia and its northern region of Tigray have been in conflict for about a year now. The political power struggle that had been going on for decades escalated a year ago when Ethiopia’s Prime Minister Abiy Ahmed ordered a military offensive. The conflict is putting hundreds of thousands of people in Tigray at risk of starvation and famine. Tigra...
Article
Full-text available
This study aims at characterizing agricultural drought in Ethiopia and understanding the effects of drought on crop yield. Monthly, seasonal and annual Normalized Difference Vegetation Index (NDVI) and Vegetation Condition Index (VCI) values were calculated using MODIS (MOD13Q1) from the year 2003 to 2017. The relationships between NDVI, VCI, and c...
Conference Paper
Full-text available
Ethiopia is a mountainous country known for its distinct topography ranging from alpine environment to desert-like conditions along the rift valley. Topoclimate, orographic rains on windward slopes and leeward rain shadow control rainfall variability in tropical mountains (Van den Hende et al., 2021). Such variability has a substantial societal imp...
Preprint
Collecting field data on 161 sampling sites in very difficult conditions has allowed us to evaluate the status of cropping in part of the Tigray region of Ethiopia, by the end of August 2021. We have observed that local farming communities are remarkably resilient, also in times of conflict and instability. Relying on indigenous knowledge and local...
Article
Since fighting broke out in November 2020 between the Tigrayan regional government and the Ethiopian army, the conflict has wreaked havoc on the lives of people living in the Tigray Region of Ethiopia. Over 9,500 civilian deaths have been documented, with many more unrecorded. In addition about 2 million people have been displaced and at least 400,...
Preprint
Full-text available
The damage to human and material resources of the Tigray universities (Ethiopia) inflicted by nine months of war against Tigray is presented in a qualitative way. We used interview methods, and only triangulated findings are represented. It is a story of large-scale destructions...
Preprint
Full-text available
Since November 2020, a civil war is taking place in Tigray (north Ethiopia), where about 75% of the active population are farmers. Here, we present the state of ploughing in Tigray’s war conditions, early in the 2021 rainy season and discuss contextual factors. Early May 2021, around Mekelle, very few croplands have been ploughed, as compared to th...
Preprint
Full-text available
The consequences of prolonged precipitation-deficient periods are primarily substantial water deficit, with the spatial characteristics of a place being (semi)arid, and various socioeconomic factors worsening its impacts and deepening poverty among agrarian communities.This study utilizes a combination of climate, remote sensing and field survey da...
Preprint
Full-text available
The consequences of prolonged precipitation-deficient periods are primarily substantial water deficit, with the spatial characteristics of drylands and various socioeconomic factors worsening its impacts and deepening poverty among agrarian communities, with attendant food security implications. This study utilizes a combination of climate, remote...
Conference Paper
Full-text available
Agriculture remains the dominant source of food production and the livelihood foundation for majority of the rural poor in the sub-Saharan Africa, including Ethiopia. Access to agricultural-water is, however, a limitation hindering crop productivity and end food insecurity in the drylands. In rain-deficit lowlands such as in the Raya-valley, flood-...
Article
Full-text available
This study analyzes the impact of land use/land cover (LULC) changes on the hydrology of the dry Afromontane forest landscape in northern Ethiopia. Landsat satellite images of thematic mapper (TM) (1986), TM (2001), and Operational Land Imager (OLI) (2018) were employed to assess LULC. All of the images were classified while using the maximum likel...
Article
Full-text available
Irrigated agriculture in the rainfall‐deficit semi‐arid lowlands of the Raya valley rely on spate systems to produce food crops. Climate and land‐cover dynamics upstream are, however, threatening runoff response reaching these spate systems. The objective of this study was thus to analyse the hydrological response of dryland catchments to changing...
Conference Paper
Full-text available
Spate-irrigation, a system foreseen as a potential means of improving agricultural production in rainfall deficit lowlands, is profoundly threatened by climate and land-cover change upstream. Yet, the actual implications of these changes on spate has not been well studied. The objective of this study was thus to analyze the hydrological-response of...

Questions

Question (1)
Question
I am looking for a reliable means to download high-resolution historical google earth images. I had worked with Google Earth pro, SASPlanet, and ArcBruTile.
Google earth pro has unreliable image quality, SASPlanet only gives recent images, and ArcBruTile doesn't allow exporting. I would appreciate any suggestions in this regard.

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Cited By

Projects

Projects (4)
Project
A humanitarian crisis has unfolded in Tigray, the northernmost region of Ethiopia. As professionals with decades of involvement in research and development activities in Tigray, we are saddened to see the gains made after the devastating civil war of the 1980s being wiped away before our eyes. Many citizens have lost their lives, many others are wounded, and people in Tigray and other parts of Ethiopia live in fear that their lives are at great jeopardy. Sexual violence and starvation are widespread.
Project
Topoclimate, and more precisely orographic rains on windward slopes and leeward rain shadow, controls the spatiotemporal variability of rainfall, vegetation, and hydrology in tropical mountains. Such variability has a substantial societal impact. For instance, they can cause differences in wealth of rain-fed farmers among the windward and leeward sides of a mountain. However, due to lack of detailed scientific knowledge, a “one-size-fits-all” agro-ecosystem management approach has so far been used in determining priority zones for conservation and distributing agricultural inputs, without considering rainfall variability. This project is therefore aimed at understanding topoclimatic effects on rainfall distribution and the subsequent impacts on vegetation cover and surface hydrology over the Ethiopian mountain massifs. A multidisciplinary approach will be adopted to reach the overarching goal, including analysis of rainfall distribution and seasonality using the ALARO-0 model and statistical matching with characteristics of natural vegetation and surface runoff. http://geoweb.ugent.be/projects/615d7365d397c805dc9912d6
Project
The project aims at investigating ecosystem service values (ESV) of landscapes and their dynamics with changing land-cover. Emphasis is given to total ESV, Per-capita ESV, and contribution of individual service functions in the northcentral highlands of Ethiopia.