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| 1 | Predicting the spatial distribution of soil erodibility factor using USLE nomograph in an agricultural watershed,Ethiopia显示文摘Soil erosion in the northwestern Amhara region,Ethiopia has been a subject of anxiety,resulting in a major environmental threat to the sustainability and productive capacity of agricultural areas.This study tried to estimate soil erodibility factor(Kfactor)using Universal Soil Loss Equation(USLE)nomograph,and evaluate the spatial distribution of the predicted K-factor in a mountainous agricultural watershed.To investigate the K-factor,the 54 km2 study watershed was divided into a 500 m by 500 m square grid and approximately at the center of each grid,topsoil samples(roughly 10 to 20 cm depth)were collected over 234 locations.Sand,silt,clay and organic matter(OM)percentage were analyzed,while soil permeability and structure class codes were obtained using the United States Department of Agriculture(USDA)document.The resulting coefficient of variation(CV)of the estimated K-factor was 0.31,suggesting a moderate variability.Meanwhile,the value of nugget to sill ratio of K-factor was 0.32,which categorized as moderate spatial autocorrelation.Prediction accuracy and model fitting effect of the Gaussian semivariogram approach was best,suggesting that the Gaussian ordinary Kriging model was more appropriate for predicting Kfactor.The resulting value of the mean error(ME)was 0 and the mean squared deviation ratio(MSDR)was nearly 1,which indicates the Gaussian model was unbiased and reproduced the experimental variance sufficiently.The values of K-factor were smaller(0.0217 to 0.0188)in the northern part and gradually increased(0.0273 to 0.033 Mg h MJ^(-1)mm^(-1))towards the central and south of the study watershed. | Hailu Kendie Addis Andreas Klik | 2015 | International Soil and Water Conservation Research2015，3，4： | 2 |
| 2 | Automated erosion wheel : A new measuring device for field erosion plots 显示文摘 | Klik A Sokol W Steindel F | 2004 | Journal of Soil and Water Conservation2004，，3： | 1 |
| 3 | Soii surface roughness measurement- methods, applicability, and surface representation显示文摘 | Jester W Klik A | 2005 | Catena2005，64，2： | 1 |
| 4 | Soil surface roughness measurement—methods, applicability, and surface representation显示文摘 | Werner Jester Andreas Klik | 2005 | Catena2005，，： | 1 |
| 5 | Eosinophilic radiculomyeloecephalitis: an angiostrongyliasis outbreak in American Samoa relat ed to ingestion of Achatina fulica snails显示文摘 | Kliks MM Kroenke K Hardman JM | 1982 | Am J Trop Med Hyg1982，31，： | 1 |
| 6 | Influence of sympathetic tone on ventricular fibriliation threshold during experimental coronary occiusion显示文摘 | Kliks BR Burgess MJ Abildskov JA | 1975 | Am J Cardiol1975，36，： | 1 |
| 7 | Soil surface roughness measurement- methods, applicability, and surface representation显示文摘 | Jester W Klik A | 2005 | Catena2005，64，2： | 1 |
| 8 | Eosinophilic meningitis beyond the Pacific Basin: the global dispersal of a peridomestic zoonosis caused by Angiostrongylus canto nensis, the nematode lungworm of rats 显示文摘 | Kliks MM Palumbo NE | 1992 | Soc Sci Med1992，34，2： | 1 |
| 9 | Modelling soil erosion and sediment yield at a catchment scale the case of Masinga catchment,Kenya显示文摘 | Mutua B M Klik A Loiskandl W | | 0，，05： | 1 |
| 10 | Larval Ascaridoid Nematodes from fishes near the Hawaiian Islands,with comments on pathogenicity experiments 显示文摘 | Deardorff TL Kliks MM Rosenfeld ME | 1982 | PacificSci1982，2，： | 1 |
| 11 | Antibody-depend-ent enhancement of dengue virus growth in human mono-cytes as arisk factor for dengue hemorrhagic fever显示文摘 | Kliks SC Nisalak A Brandt WE | 1989 | Am JTrop Med Hyg1989，40，4： | 1 |
| 12 | Angiostrongylus (Parastrongylus)eosinophilic mening it is显示文摘 | Koo J Pien FD Kliks MM | 1988 | Rev Infect Dis1988，10，6： | 1 |
| 13 | Evidence that maternal dengue antibodies are important in the development of dengue hemorrhagic fever in infants 显示文摘 | Kliks SC Nimmanitya S Nisalak A | 1988 | Am J Trop Med Hyg1988，38，2： | 1 |
| 14 | Features of HIV-1 that could influence maternal-child transmission显示文摘 | Kliks S Wara DW Landers DV | | J Am Med Assoc0，272，： | 1 |
| 15 | Improving effectiveness of the active constellation extension method for PAPR reduction ized multicarrier signals显示文摘 | KLIKS A OGUCKA H | 2011 | Wireless Personal Communications2011，61，2： | 1 |
| 16 | Assessment of Rill Erosion Development during Erosive Storms at Angereb Watershed, Lake Tana Sub-basin in Ethiopia显示文摘Application of simple and locally based erosion assessment methods that fit to the local condition is necessary to improve the performance and efficiency of soil conservation practices. In this study, rill erosion formation and development was investigated on the topo-sequence of three catchments(300-500 m slope length); and on agricultural fields(6 m and 14 m slope lengths) with different crop-tillage surfaces during erosive storms.Rill density and rill erosion rates were measured using rill cross section survey and close range digital photogrammetry. Rill formation and development was commonly observed on conditions where there is wider terrace spacing, concave slope shapes and unstable stone terraces on steep slopes. At field plot level, rill development was controlled by the distribution and abrupt change in the soil surface roughness and extent of slope length. At catchment scale, however, rill formation and development was controlled by landscape structures, and concavity and convexity of the slope. Greater rill cross sections and many small local rills were associated to the rougher soil surfaces. For instance, relative comparison of crop tillage practices have showed that faba-beantillage management was more susceptible to seasonal rill erosion followed by Teff and wheat tillage surfaces under no cover condition. Surface roughness and landscape structures played a net decreasing effect on the parallel rill network development. This implies that spatial and temporal variability of the rill prone areas was strongly associated with the nature and initial size of surface micro-topography or tillage roughness. Thus, it is necessary to account land management practices, detail micro-topographic surfaces and landscape structures for improved prediction of rill prone areas under complex topographic conditions. Application of both direct rill cross section survey and close range digital photogrammetric techniques could enhance field erosion assessment for practical soil conservation improvement. | Gizaw Desta GESSESSE Reinfried MANSBERGER Andreas KLIK | 2015 | Journal of Mountain Science2015，12，1： | 1 |
| 17 | Eosinophilic radiculomyeloencephalitis:an angiostrongyliasis outbreak in American Samoa related to ingestion of Achatina fulica snails显示文摘 | Kliks MM Kroenke K Hardman JM | 1982 | Am J Trop Med Hyg1982，31，6： | 1 |
| 18 | Residues of organochlorine pesticides in honeys from different geographic regions显示文摘 | Jun Wang Michael M. Kliks Soojin Jun Qing X. Li | 2010 | Food Research International2010，，9： | 1 |
| 19 | Soil surface roughness measurement: methods, applicability, and surface representation显示文摘 | Jester W Klik A | 2005 | Catena2005，64，17： | 1 |
| 20 | Sediment Yield Estimation in a Small Watershed on the Northern Loess Plateau,China显示文摘 | ZHAO G KLIK A MU X | 2015 | Geomorphology2015，，2： | 1 |
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