|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Dynamics and hotspots of soil erosion and management scenarios of the Central Rift Valley of Ethiopia显示文摘大多数在埃塞俄比亚的中央裂缝山谷的低地干旱或半干旱并且在降级,与干旱的经常的出现。土壤侵蚀走水路在雨季期间是在这个区域的一个严重问题,导致为水身体的衰退农业生产,减少的食物安全,和沉积风险。然而,没有这个问题或可能的管理答案的系统的学习。满足这需要,我们分析了侵蚀从 1973 ~ 2006 评估的土壤,识别侵蚀热点,和建议可能的土壤保存情形。我们用通用土壤损失方程和地理信息系统软件估计了土壤损失 dynamicity,就在下列三个时期的陆地使用变化而言:1973, 1985 和 2006。我们以识别热点的侵蚀严厉,地形学,和陆地使用描绘了分水岭并且求婚,当模特儿,并且评估了各种各样的分水岭管理情形减轻这个问题。分别地,土壤侵蚀由于植被降级并且特别地从 1973 ~ 2006 显著地增加了,与在 1973, 1985,和 2006 的 31, 38,和 56 t ha1 的年度率几千公顷进农田的森林或树林的变换。观察土壤侵蚀率远离这个国家的土壤损失的可容忍的率并且因此要求迫切土壤保存干预,特别在热点区域。我们建议为减少的八种情形玷污损失并且评估了他们的有效性。恢复降级的土地(使用的 exclosures 和种的植被) 和在农田的安装石头侵蚀控制结构(石头东亚各国之堤岸) 分别地在 12.6% 和 63.8% 减少了全部的土壤损失。由综合管理(侵蚀控制结构和 exclosures ) 与超过 20 t ha1 的年度土壤损失对待热点区域是最有效的途径,减少在 87.8% 的土壤损失。 | Derege Tsegaye MESHESHA Atsushi TSUNEKAWA Mitsuru TSUBO Nigussie HAREGEWEYN | 2012 | International Journal of Sediment Research2012，27，1： | 6 |
| 2 | Testing and evaluation of the agricultural non-point source pollution model (AGNPS) on Augucho catchment, western Hararghe, Ethiopia显示文摘 | Nigussie Haregeweyn Fekadu Yohannes | 2002 | Agriculture, Ecosystems and Environment2002，，1： | 2 |
| 3 | Effect of Polyacrylamide integrated with other soil amendments on runoff and soil loss:Case study from northwest Ethiopia显示文摘Anionic polyacrylamide(PAM)has the potential to reduce soil erosion through soil conditioning.However,a comprehensive study about its effectiveness especially when applied combined with other amendments have rarely been conducted in the tropical highland climatic conditions,such as in Ethiopia.The study assessed the effectiveness of PAM(P=40 kg ha^(-1))alone or integrated with other soil amendments such as gypsum(G=5 t ha^(-1)),lime(L=4 t ha^(-1))and biochar(B=8 t ha^(-1))on runoff and soil loss at Aba Gerima watershed in the Upper Blue Nile basin,northwest of Ethiopia,where there is high erosion-caused soil degradation.A total of 79 daily runoff and sediment data were collected from eight runoff plots(1.3m×4m)with three replications planted with teff(Eragrostis tef)crop for two years(2018&2019)rainy seasons.Associated changes in soil physicochemical properties and crop growth parameters were investigated.Treatments reduced seasonal runoff by 12–39%and soil loss by 13–53%.The highest reduction in runoff was observed from P+B and PAM treatments while the highest reduction in soil loss was observed from that of P+L and PAM treatments.Integrating PAM with other amendments improved soil structural stability,moisture content,soil pH(P+L)and organic matter(P+B),leading to favorable environment for crop growth(biomass yield)and reduced runoff and soil erosion.Unlike PAM,biochar and lime amendments may need more time after application to be more effective.Hence continuing the field experiment and studying physico-chemical mechanisms for extended period will better elucidate their single or combined effectiveness over time. | Birhanu Kebede Atsushi Tsunekawa Nigussie Haregeweyn Mitsuru Tsubo Temesgen Mulualem Amrakh I.Mamedov Derege Tsegaye Meshesha Enyew Adgo Ayele Almaw Fenta Kindiye Ebabu Tsugiyuki Masunaga | 2022 | International Soil and Water Conservation Research2022，10，3： | 1 |
| 4 | The Dynamics of Urban Expansion and Its Impacts on Land Use/Land Cover Change and Small-Scale Farmers Living Near the Urban Fringe:A Case Study of Bahir Dar,Ethiopia显示文摘 | Haregeweyn N Fikadu G Tsunekawa A | 2012 | Landscape and Ur-ban Planning2012，106，2： | 1 |
| 5 | The dynamics of urban expansionand its impacts on land use/land cover change andsmall-scale farmers living near the urban fringe : A casestudy of Bahir Dar,Ethiopia显示文摘 | Haregeweyn Nigussie | 2012 | Landscape and urbanplanning2012，106，2： | 1 |
| 6 | Testing and evaluation of the agricultural non-point source pollution model (AGNPS) on Augucho catchment, western ararghe, Ethiopia 显示文摘 | Nigussie Haregeweyn Fekadu Yohannes | 2003 | Agriculture Ecosystems and Environment2003，99，： | 1 |
| 7 | The dynamics of urban expansion and its impacts on land use/land cover change and small-scale farmers living near the urban fringe: A case study of Bahir Dar, Ethiopia 显示文摘 | HAREGEWEYN N FIKADU G TSUNEKAWA A | 2012 | Landscape and Urban Planning2012，106，2： | 1 |
| 8 | Efficiency of soil and water conservation practices in different agro-ecological environments in the Upper Blue Nile Basin of Ethiopia显示文摘In developing countries such as Ethiopia, research to develop and promote soil and water conservation practices rarely addressed regional diversity. Using a water-balance approach in this study, we used runoff plots from three sites, each representing a different agro-ecological environment, e.g., high, mid and low in both elevation and rainfall, in the Upper Blue Nile Basin of Ethiopia to examine the runoff response and runoff conservation efficiency of a range of different soil and water conservation measures and their impacts on soil moisture. The plots at each site represented common land use types(cultivated vs. non-agricultural land use types) and slopes(gentle and steep). Seasonal runoff from control plots in the highlands ranged 214–560 versus 253–475 mm at midlands and 119–200 mm at lowlands. The three soil and water conservation techniques applied in cultivated land increased runoff conservation efficiency by 32% to 51%, depending on the site. At the moist subtropical site in a highland region, soil and water conservation increased soil moisture enough to potentially cause waterlogging, which was absent at the lowrainfall sites. Soil bunds combined with Vetiveria zizanioides grass in cultivated land and short trenches in grassland conserved the most runoff(51% and 55%, respectively). Runoff responses showed high spatial variation within and between land use types, causing high variation in soil and water conservation efficiency. Our results highlight the need to understand the role of the agro-ecological environment in the success of soil and water conservation measures to control runoff and hydrological dynamics. This understanding will support policy development to promote the adoption of suitable techniques that can be tested at other locations with similar soil, climatic, and topographic conditions. | Dagnenet SULTAN Atsushi TSUNEKAWA Nigussie HAREGEWEYN Enyew ADGO Mitsuru TSUBO Derege T MESHESHA Tsugiyuki MASUNAGA Dagnachew AKLOG Ayele A FENTA Kindiye EBABU | 2018 | Journal of Arid Land2018，10，2： | 1 |
| 9 | Testing and evaluation of the agricultural non-point source pollution model (AGNPS) on Augucho cat chment, western Hararghe, Ethiopia显示文摘 | HAREGEWEYN N YOHANNES F | 2003 | Agriculture Ecosystems and Environment2003，99，17： | 1 |
| 10 | The dynamics of urban expansion and its impacts on land use/land cover change and small-scale farmers living near the urban fringe:A case study of Bahir Dar,Ethiopia显示文摘 | Nigussie Haregeweyn Genetu Fikadu Atsushi Tsunekawa | 2012 | Landscape and Urban Planning2012，，106： | 1 |
| 11 | Changes in ecosystem service values strongly influenced by human activities in contrasting agro-ecological environments显示文摘Background:Evaluating the impacts of land-use/land-cover(LULC)changes on ecosystem service values(ESVs)is essential for sustainable use and management of ecosystems.In this study,we evaluated the impact of human activity driven LULC changes on ESVs over the period 1982–2016/17 in contrasting agro-ecological environments:Guder(highland),Aba Gerima(midland),and Debatie(lowland)watersheds of the Upper Blue Nile basin,Ethiopia.Results:During the study period,the continuous expansion of cultivated land at the expense of natural vegetation(bushland,forest,and grazing land)severely reduced the total ESV by about US$58 thousand(35%)in Aba Gerima and US$31 thousand(29%)in Debatie watersheds.In contrast,the unprecedented expansion of plantations,mainly through the planting of Acacia decurrens,led,from 2006,to a ESV rebound by about US$71 thousand(54%)in Guder watershed,after it had decreased by about US$61 thousand(32%)between 1982 and 2006.The reduction in natural forest area was the major contributor to the loss of total ESV in the study watersheds,ranging from US$31 thousand(63%)in Debatie to US$96.9 thousand(70%)in Guder between 1982 and 2016/17.On an areaspecific basis,LULC changes reduced the average ESV from US$560 ha^(−1) year^(−1)(1982)in Guder to US$306 ha^(−1) year^(−1)(2017)in Debatie watersheds.Specific ESVs such as provisioning(mainly as food production)and regulating services(mainly as erosion control and climate regulation)accounted for most of the total ESVs estimated for the study watersheds.Conclusions:In most cases,the total and specific ESVs of the watersheds were negatively associated with the population growth,which in turn was positively associated with the expansion of cultivated land over the study period.In Guder,however,ESVs were positively associated with population growth,especially after 2012.This is mainly due to the expansion of Acacia decurrens plantations.Our results suggest,therefore,that future policy measures and directions should focus on improving vegetation cover through planting multipurpose trees such as Acacia decurrens to prevent future loss of ESV in the midland and lowland regions of the Upper Blue Nile basin and beyond.However,caution must be taken during plantation of invasive species as they may have undesirable consequences. | Mulatu Liyew Berihun Atsushi Tsunekawa Nigussie Haregeweyn Mitsuru Tsubo Ayele Almaw Fenta | 2021 | Ecological Processes2021，10，1： | 1 |
| 12 | Assessing the performance of a spatially distributed soil erosion and sediment delivery model (WaTEM/SEDEM) in northern Ethiopia显示文摘 | Haregeweyn H Poesen J Verstraeten G | | 0，，2： | 1 |
| 13 | Testing and evaluation of the agricultural non point source pollution model (AGNPS) on Augucho catchment, western Hararghe, Ethiopia显示文摘 | Haregeweyn N Yohannes F | 2003 | Agriculture Ecosystems & Environment2003，99，13： | 1 |
| 14 | Testing and evaluation of the agricultural non-point source pollution model (AGNPS) on Augucho catchment, western Hararghe, Ethiopia显示文摘 | Haregeweyn N Yohannes F | 2003 | Agriculture Ecosystems& Environment2003，99，1： | 1 |
| 15 | Testing and evaluation of the agricultural non point source pollution model (AGNPS) on Augucho catchment, western Hararghe, Ethiopia显示文摘 | Haregeweyn N Yohannes F | 2003 | Agriculture Ecosystems & Environment2003，99，1： | 1 |
| 16 | Towards a better understanding of pathways of multiple co-occurring erosion processes on global cropland显示文摘Soil erosion is a complex process involving multiple natural and anthropic agents,causing the deterio-ration of multiple components comprising soil health.Here,we provide an estimate of the spatial pat-terns of cropland susceptibility to erosion by sheet and rill,gully,wind,tillage,and root crops harvesting and report the co-occurrence of these processes using a multi-model approach.In addition,to give a global overview of potential future changes,we identify the locations where these multiple concurrent soil erosion processes may be expected to intersect with projected dry/wet climate changes by 2070.Of a modelled 1.48 billion hectares(B ha)of global cropland,our results indicate that 0.56 B ha(-36%of the total area)are highly susceptible(classes 4 and 5)to a single erosion process,0.27 B ha(-18%of the total area)to two processes and 0.02 B ha(1.4%of the total area)to three or more processes.An estimated 0.82 B ha of croplands are susceptible to possible increases in water(0.68 B ha)and wind(0.14 B ha)erosion.We contend that the presented set of estimates represents a basis for enhancing our founda-tional knowledge on the geography of soil erosion at the global scale.The generated insight on multiple erosion processes can be a useful starting point for decision-makers working with ex-post and ex-ante policy evaluation of the UN Sustainable Development Goal 15(Life on Land)activities.Scientifically,this work provides the hitherto most comprehensive assessment of soil erosion risks at the global scale,based on state-of-the-art models. | Pasquale Borrelli Christine Alewell Jae E.Yang Nejc Bezak Yixian Chen Ayele Almaw Fenta Arthur Nicolaus Fendrich Surya Gupta Francis Matthews Sirio Modugno Nigussie Haregeweyn David A.Robinson Florence Tan Matthias Vanmaercke Gert Verstraeten Diana C.S.Vieira Panos Panagos | 2023 | International Soil and Water Conservation Research2023，11，4： | 0 |
| 17 | Tillage and crop management impacts on soil loss and crop yields in northwestern Ethiopia显示文摘Lack of appropriate agronomic practices is one of the major causes for soil erosion and low yields in teff(Eragrostis tef[Zucc.])production in Ethiopia.A 3-yr study was conducted at the Aba Gerima watershed in northwestern Ethiopia,to investigate the effects of two tillage practices(reduced tillage[RT]and conventional tillage[CT]),two planting methods(row planting[RP]and broadcast planting[BP]),and two compaction options(with[+T]and without[-T]trampling)on soil loss and teff yields in a split-split plot arrangement.Sediment concentration ranged from 0.01 to 5.37 g L^(-1)(mean,0.25 g L^(-1))in our study.Accordingly,the estimated total(August-October)soil loss ranged from 0.2 to 0.5 t ha^(-1)(mean,0.3 t ha^(-1)).The sediment concentration and total soil loss were significantly influenced(P<0.05)by tillage,planting methods,and trampling only in the third monitoring year.RT reduced soil loss by 19% relative to that of CT,whereas RP resulted in a 13%reduction in soil loss over BP.The-T plots showed a 15%reduction in soil loss as compared to+T plots.Results revealed significant increase in soil total carbon and nitrogen in RT and-T.Less soil loss and greater teff grain yield were obtained in plots with improved agronomic practices(RT and RP)compared to conventional ones(CT and BP).Based on our findings we conclude that the use of RT,RP,and-T practices can effectively minimize soil loss without any crop yield penalty. | Fekremariam Asargew Mihretie Atsushi Tsunekawa Nigussie Haregeweyn Enyew Adgo Mitsuru Tsubo Kindiye Ebabu Tsugiyuki Masunaga Birhanu Kebede Derege Tsegaye Meshesha Wataru Tsuji Muluken Bayable Mulatu Liyew Berihun | 2022 | International Soil and Water Conservation Research2022，10，1： | 0 |
| 18 | Global analysis of cover management and support practice factors that control soil erosion and conservation显示文摘Cover management and support practices largely control the magnitude and variability of soil erosion.Although soil erosion models account for their importance(particularly by C-and P-factors in the Revised Universal Soil Loss Equation),obtaining spatially explicit quantitative field data on these factors remains challenging.Hence,also our insight into the effects of soil conservation measures at larger spatial scales remains limited.We analyzed the variation in C-and P-factors caused by human activities and climatic variables by reviewing 255 published articles reporting measured or calculated C-and P-factor values.We found a wide variation in both factor values across climatic zones,land use or cover types,and support practices.The average C-factor values decreased from arid(0.26)to humid(0.15)climates,whereas the average P-factor values increased(from 0.33 to 0.47,respectively).Thus,support practices reduce soil loss more effectively in drylands and drought-prone areas.The global average C-factor varies by one order of magnitude from cropland(0.34)to forest(0.03).Among the major crops,the average C-factor was highest for maize(0.42)followed by potato(0.40),among the major orchard crops,it was highest for olive(0.31),followed by vineyards(0.26).The P-factor ranged from 0.62 for contouring in cropland plots to 0.19 for trenches in uncultivated land.The C-factor results indicate that cultivated lands requiring intensive site preparation and weeding are most vulnerable to soil loss by sheet and rill erosion.The low P-factor for trenches,reduced tillage cultivation,and terraces suggests that significantly decreased soil loss is possible by implementing more efficient management practices.These results improve our understanding of the variation in C-and P-factors and support large-scale integrated catchment management interventions by applying soil erosion models where it is difficult to empirically determine the impact of particular land use or cover types and support practices:the datasets compiled in this study can support further modeling and land management attempts in different countries and geographic regions. | Kindiye Ebabu Atsushi Tsunekawa Nigussie Haregeweyn Mitsuru Tsubo Enyew Adgo Ayele Almaw Fenta Derege Tsegaye Meshesha Mulatu Liyew Berihun Dagnenet Sultan Matthias Vanmaercke Panos Panagos Pasquale Borrelli Eddy J.Langendoen Jean Poesen | 2022 | International Soil and Water Conservation Research2022，10，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员