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| 1 | Automated Water Extraction Index: A new technique for surface water mapping using Landsat imagery显示文摘 | Gudina L. Feyisa Henrik Meilby Rasmus Fensholt Simon R. Proud | 2014 | Remote Sensing of Environment2014，，： | 1 |
| 2 | Automated Water Extraction Index: A new technique for surface water mapping using Landsat imagery显示文摘 | FEYISA G L MEILBY H FENSHLOT R | 2014 | Remote Sensing of Environment2014，140，： | 1 |
| 3 | Automated Water Extraction Index:A new technique for surface water mapping using Landsat imagery显示文摘 | Feyisa G L Meilby H Fenshlot R | 2014 | Remote Sensing of Environment2014，140，： | 1 |
| 4 | Geographic distribution of MERS coronavirus among dromedary camels, Africa显示文摘 | Reusken CB Messadi L Feyisa A | 2014 | Emerg Infect Dis2014，20，8： | 1 |
| 5 | Automated Water Extraction Index: A New Technique for Surface Water Map- ping Using Landsat Imagery显示文摘 | Feyisa G L Meilby H Fensholt R | 2014 | Remote Sensing of Environ- ment2014，140，： | 1 |
| 6 | Status,approaches,and challenges of ecosystem services exploration in Ethiopia:A systematic review显示文摘Healthy ecosystems benefit humans in various forms,and ecosystem services(ESs)are the benefits reaped by people in various forms.However,increase in global human population and the resulting anthropogenic activities have led to rapid alterations in the composition,structure,and functions of the ecosystems as well as their degradation,increasing the losses associated with ES values.Livelihoods of people in several developing countries are highly dependent on their surrounding ecosystems and the services they provide.Therefore,management and reduction of ecosystem modification are required;especially in developing countries,this requirement is even more urgent.In Africa,ecosystem-based studies are limited and in still in their initial stages.Hence,this paper examines dynamic Ethiopian ESs in Africa from 2010 to 2019 based on a systematic bibliometric analysis of articles from the Scopus database using a set of standard criteria.In total,73 articles were published on Africa,including Ethiopia.The results reveal that the spatial distribution trend of ES studies is unevenly distributed,where most studies were conducted in the central highlands,followed by southwestern regions,with no studies on the western part of Ethiopia.Regarding service providing units(SPUs),the urban ecosystem and agroecosystem accounted for 25%and mixed ecosystems accounted for 20%.Furthermore,a total of 67 specific ESs were investigated by researchers,among which 81.25%of the specific ESs were classified into two ES categories.Provisioning ES(40.29%)dominated across all of the ES types while the cultural ES(5.97%)type has received little attention.Based on keywords,ESs were strongly linked to South Africa,Ethiopia,and biodiversity.In terms of the co-authorship network,authors from the United Kingdom,Italy,Burkina Faso,the Netherlands,and Germany actively collaborated with the Ethiopian researchers,and approximately 50%of the studies were aimed at estimating the value of the ESs through an applied mixed mode of ES study approaches.This review indicates that,due to land use land cover(LULC)changes from 1985 to 2015,approximately US$149.5 million or US$4.98 million annually in ES values were lost.Moreover,there is a critical need to extend ES studies to entire Ethiopia to capture the spatial and socioeconomic uniqueness of various ecosystems and focus more on multiple ES categories as a means to address ES synergies and provide unit-services to strengthen the relations among benefiting areas in Ethiopia. | Mekonnen Amberber Mekuria Argaw Gudina Legese Feyisa Sileshi Degefa | 2020 | Chinese Journal of Population,Resources and Environment2020，18，3： | 1 |
| 7 | Automated water extraction index:A new technique for surface water mapping using Landsat imagery显示文摘 | FEYISA G L MEILBY H FENSHOLT R | 2014 | Remote Sensing of Environment2014，140，： | 1 |
| 8 | Automated water extrac-tion index : A new technique for surface water mapping using Land-sat imagery显示文摘 | Feyisa G L Meilby H Fensholt R | 2014 | Remote Sensing of Environment2014，140，： | 1 |
| 9 | Automated Water Ex traction Index: A new technique for surface water mapping us ing Landsat imagery 显示文摘 | Feyisa G L Meilby H Fenshoh R | 2014 | Remote Sensing of Environment2014，140，： | 1 |
| 10 | Automated Water Extraction Index:A New Technique for Surface Water Mapping Using Landsat Imagery显示文摘 | FEYISA G L MEILBY H FENSHOLT R | 2014 | Remote Sensing of Environment2014，，140： | 1 |
| 11 | Geographic Distribution of MERS Coronavirus among Dromedary Camels, Africa 显示文摘 | Reusken CB Messadi L Feyisa A | 2014 | Emerg Infect Dis2014，20，： | 1 |
| 12 | Impacts of fire suppression on above‐ground carbon stock and soil properties in Borana rangelands,southern Ethiopia显示文摘Background:Fire is a natural disturbance that releases carbon back into the atmosphere.Pastoralists have used fire for many thousands of years for rangeland management.The use of fire in the Borana rangelands of southern Ethiopia was a common practice to improve the productivity of the rangelands.However,the use of fire as a tool to manage rangeland was prohibited by government policy in the early 1970s.Methods:In this study,we assessed the long‐term impacts of fire suppression on aboveground carbon stocks of woody and herbaceous biomass,soil organic carbon stocks,and total nitrogen stocks at burned versus adjacent unburned areas in the Borana rangelands of southern Ethiopia.The investigation was conducted in two locations:Dikale and Sanke.The upland location was represented by Dikale,while the bottomland location was represented by Sanke.Each study site was replicated three times,with burned versus adjacent unburned areas representing each replicate.Soil samples were collected in three soil depths(0–5,5–15,and 15–30 cm),while vegetation attributes were collected from 60 plots within three burned and three adjacent unburned sites in each landscape.Results:The soil organic carbon stock and pooled carbon stock between burned and unburned sites across the two landscapes showed minimal variation.The above‐ground carbon biomass accumulation for woody and herbaceous plants did not show any significant difference between burned and unburned sites both at the bottomland and upland areas.The total nitrogen contents recorded at uplands in burned sites were significantly(p<0.05)higher than the total nitrogen stocks for the unburned adjacent sites.Conclusions:Burned areas accumulated relatively more carbon stocks in terms of herbaceous biomass(3.27±0.43 Mg ha^(−1))than the adjacent unburned areas(0.98±0.43 Mg ha^(−1)).The results of the current study suggest that burning improved the carbon sequestration potential of herbaceous plants in arid savanna ecosystems. | Kenea Feyisa Sheleme Beyene Ayana Angassa | 2023 | Grassland Research2023，2，1： | 0 |
| 13 | Effects of urbanization on the relationship between greenspace patterns and evolution of regional heat island in cities of Ethiopia显示文摘Green space(GS)is a central element of urban ecosystems while,urbanization is substantially changed green land into impervious ecosystems,which has then troubled the equilibrium of the surface thermal energy and the ecosystem services fluxes.This study was intended to explore the response of relative land surface temperature(RLST)intensities to the urban ecosystem-agglomeration dynamics as well as regional thermal environment(RTE)effects on green space in four major cities(i.e.,Addis Ababa-Hawassa-Adama-Bahir Dar)of Ethiopia from 1990−2020,using a set of remote sensing images,single-channel algorism,and geospatial analyses.The results showed the trends of GS evolution were:GS loss>GS gain>GS exchange.Besides,the distinct ecosystems as high-temperature zones(RLST more than 2°C)were gradually augmented and significantly intensified between 2010−2020 in all cities,while the proportion of green space was significantly decreased.Due to this,the segregated urban heat islands were gradually inter-weaved and interacted with each other and forming regional heat islands.However,the newly established green space has fewer cooling effects than urban forest and greenery,because RLST of green space loss and gain are substantially disparate.We also confirmed that the regional thermal environment is not only prejudiced by ecosystem patterns and processes besides substantially conquered by the particular GS change processes as well as RHI dynamics and evolution rate. | Mekonnen Amberber Degefu Mekuria Argaw Gudina Legese Feyisa Sileshi Degefa | 2021 | Chinese Journal of Population,Resources and Environment2021，19，4： | 0 |
| 14 | A global view of regulatory ecosystem services:existed knowledge,trends,and research gaps显示文摘Ecosystem services(ES)are growing fields of research.It helps to provide an inherent way to understand the synergy and trade-offs between human beings and their natural environment.Regulatory ecosystem services(RES)are significantly important to maintaining the world in which people can live,and control the negative effects of flood,disasters,and diseases.It can also provide regulatory services like ecosystem protection,human safety,and the provision of other ES.However,emerging ES decision-making agendas focus on ES that is tangible and has a direct link with human well-being.Thus,the attention given to RES is low due to its less tangible benefits and complexity to measure the benefits.Disregarding and lack of attention from policymakers and scientific community may lead to unintended risks to human well-being and significant influences on the provision of other ES.This study describes the research trends on RES,knowledge generated,and the major limitation.We concluded that though there is an exponential growth of scientific publications on ES,no adequate studies were found on RES.Also,the existed studies varied in their size and types of RES indicators covered,habitats/ecosystems,and geographic extent addressed.There was also a lack of connecting knowledge generated on the benefits of RES with the national policy of natural resource management,inconsistency of ES classification,and methodological diversity.Therefore,scientific communities are promoted to link RES studies with human health.Besides,the researcher should give priority for the least studied ecosystems and its services,developing robust methodology,and proposing management options to enhance the regulatory services of ecosystems. | Wondimagegn Mengist Teshome Soromessa Gudina Legese Feyisa | 2020 | Ecological Processes2020，9，1： | 0 |
| 15 | Projecting future precipitation change across the semi-arid Borana lowland,southern Ethiopia显示文摘Climate change caused by past,current,and future greenhouse gas emissions has become a major concern for scientists in the field in many countries and regions of the world.This study modelled future precipitation change by downscaling a set of large-scale climate predictor variables(predictors)from the second generation Canadian Earth System Model(CanESM2)under two Representative Concentration Pathway(RCP)emission scenarios(RCP4.5 and RCP8.5)in the semi-arid Borana lowland,southern Ethiopia.The Statistical DownScaling Model(SDSM)4.2.9 was employed to downscale and project future precipitation change in the middle(2036-2065;2050s)and far(2066-2095;2080s)future at the local scale.Historical precipitation observations from eight meteorological stations stretching from 1981 to 1995 and 1996 to 2005 were used for the model calibration and validation,respectively,and the time period of 1981-2018 was considered and used as the baseline period to analyze future precipitation change.The results revealed that the surface-specific humidity and the geopotential height at 500 hPa were the preferred large-scale predictors.Compared to the middle future(2050s),precipitation showed a much greater increase in the far future(2080s)under both RCP4.5 and RCP8.5 scenarios at all meteorological stations(except Teletele and Dillo stations).At Teltele station,the projected annual precipitation will decrease by 26.53%(2050s)and 39.45%(2080s)under RCP4.5 scenario,and 34.99%(2050s)and 60.62%(2080s)under RCP8.5 scenario.Seasonally,the main rainy period would shift from spring(March to May)to autumn(September to November)at Dehas,Dire,Moyale,and Teltele stations,but for Arero and Yabelo stations,spring would consistently receive more precipitation than autumn.It can be concluded that future precipitation in the semi-arid Borana lowland is predicted to differ under the two climate scenarios(RCP4.5 and RCP8.5),showing an increasing trend at most meteorological stations.This information could be helpful for policymakers to design adaptation plans in water resources management,and we suggest that the government should give more attention to improve early warning systems in drought-prone areas by providing dependable climate forecast information as early as possible. | Mitiku A WORKU Gudina L FEYISA Kassahun T BEKETIE Emmanuel GARBOLINO | 2023 | Journal of Arid Land2023，15，9： | 0 |
| 16 | Science and Technology Backyard model:implications for sustainable agriculture in Africa显示文摘Sustainable food production to feed the growing population in Africa remains a major challenge.Africa has 64%of the global arable land but produces less than 10%of its food locally due to its inherently low soil nutrient concentrations.Poor soil fertility and a lack of fertilizer use are the major constraints to increasing crop yields in Africa.On average only about 8.8 kg NPK fertilizer is applied per hectare by African smallholder farmers.There is therefore considerable potential for increasing food production through sustainable intensification of the cropping systems.The low crop yields in Africa are also partly due to limited farmer access to modern agronomic techniques,including improved crop varieties,a lack of financial resources,and the absence of mechanisms for dissemination of information to smallholders.This study analyzed the Science and Technology Backyards(STBs)model and investigated its use for the transformation of agriculture in Africa.Some key lessons for sustainable crop intensification in Africa can be found from analysis of the STB model which is well established in China.These include(1)scientist-farmer engagement to develop adaptive and innovative technology for sustainable crop production,(2)dissemination of technology by empowering smallholders,especially leading farmers,and(3)the development of an open platform for multiple resource involvement rather than relying on a single mechanism.This review evaluates the benefits of the STB model used in China for adoption to increase agricultural productivity in Africa,with a perspective on sustainable crop intensification on the continent. | Xiaoqiang JIAO Derara Sori FEYISA Jasper KANOMANYANGA Ngula David MUTTENDANGO Shingirai MUDARE Amadou NDIAYE Bilisuma KABETO Felix Dapare DAKORA Fusuo ZHANG | 2020 | Frontiers of Agricultural Science and Engineering2020，7，4： | 0 |
| 17 | Spatial distribution of above ground carbondensity in Harana Forest,Ethiopia显示文摘Background:The need for understanding spatial distribution of forest aboveground carbon density(ACD)hasincreased to improve management practices of forest ecosystems.This study examined spatial distribution of theACD in the Harana Forest.A grid sampling technique was employed and three nested circular plots were establishedat each point where grids intersected.Forest-related data were collected from 1122 plots while the ACD of each plotwas estimated using the established allometric equation.Environmental variables in raster format were downloadedfrom open sources and resampled into a spatial resolution of 30 m.Descriptive statistics were computed to summarize the ACD.A Random Forest classification model in the R-software package was used to select strong predictors,and to predict the spatial distribution of ACD.Results:The mean ACD was estimated at 131.505 ton per ha in this study area.The spatial prediction showed thatthe high class of the ACD was confined to eastern and southwest parts of the Harana Forest.The Moran’s statisticsdepicted similar observations showing the higher clustering of ACD in the eastern and southern parts of the studyarea.The higher ACD clustering was linked with the higher species richness,species diversity,tree density,tree height,clay content,and SOC.Conversely,the lower ACD clustering in the Harana Forest was associated with higher soilcation exchange capacity,silt content,and precipitation.Conclusions:The spatial distribution of ACD in this study area was mainly influenced by attributes of the forest standand edaphic factors in comparison to topographic and climatic factors.Our findings could provide basis for bettermanagement and conservation of aboveground carbon storage in the Harana Forest,which may contribute to Ethiopia’s strategy of reducing carbon emission. | Girma Ayele Bedane Gudina Legese Feyisa Feyera Senbeta | 2022 | Ecological Processes2022，11，1： | 0 |
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