Keith Shepherd

14.5k citations

136 papers · 8.1k indexed · 4 hit papers · h-index 48

Impact in

Soil Science top 0.2%
- Soil Carbon and Nitrogen Dynamics
- Soil erosion and sediment transport
Environmental Engineering top 0.1%
- Soil Geostatistics and Mapping

Papers in ⓘ

Environmental Engineering 56
- Soil Geostatistics and Mapping 52
Soil Science 40
- Soil Carbon and Nitrogen Dynamics 28
- Soil erosion and sediment transport 6

Co-authors: Markus Walsh (16 shared papers)Bernard Vanlauwe (9 shared papers)Andrew Sila (27 shared papers)Pablo Tittonell (4 shared papers)K.E. Giller (4 shared papers)David J. Brown (1 shared paper)M. D. Mays (1 shared paper)Erick K. Towett (12 shared papers)
Journals: Geoderma (14 papers)Soil Science Society of America Journal (10 papers)Agriculture Ecosystems & Environment (5 papers)Agricultural Systems (5 papers)Nutrient Cycling in Agroecosystems (5 papers)
Partner nations: Kenya United States United Kingdom

In The Last Decade

Keith Shepherd

135 papers receiving 7.6k citations

Hit Papers

align trajectories log scale

Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions 2015 · 662 citations

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if any of the following hold:

it has ≥500 total citations;
it reaches ≥1.5× the top-1% citation threshold for papers in the same subfield and year (the threshold is the minimum needed to enter the top 1%, not the average within it);
it reaches the top citation threshold in at least one of its specific research topics.

2015 PLoS ONE
2010 Outlook on Agriculture
2005 Geoderma
2002 Soil Science Society of America Journal

Peers

Countries citing papers authored by Keith Shepherd

Since Specialization

Citations

This map shows the geographic impact of Keith Shepherd's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Keith Shepherd with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Keith Shepherd more than expected).

Fields of papers citing papers by Keith Shepherd

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Keith Shepherd. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Keith Shepherd. The network helps show where Keith Shepherd may publish in the future.

Co-authors

The 25 scholars most cited alongside Keith Shepherd, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with Keith Shepherd Line = papers co-authored together Keith Shepherd links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 136 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Development of Reflectance Spectral Libraries for Characterization of Soil Properties Soil Science Society of America Journal ·Keith Shepherd, Markus Walsh Hit paper breakdown →	2002	758
2	Mapping Soil Properties of Africa at 250 m Resolution: Random Forests Significantly Improve Current Predictions PLoS ONE ·Tomislav Hengl, G.B.M. Heuvelink, Bas Kempen, J.G.B. Leenaars, Markus Walsh, Keith Shepherd, Andrew Sila, R.A. MacMillan, Jorge Mendes de Jesus, Lulseged Tamene, Jérôme Tondoh Hit paper breakdown →	2015	662
3	Global soil characterization with VNIR diffuse reflectance spectroscopy Geoderma ·David J. Brown, Keith Shepherd, Markus Walsh, M. D. Mays, Thomas Reinsch Hit paper breakdown →	2005	600
4	Integrated Soil Fertility Management Outlook on Agriculture ·Bernard Vanlauwe, A. Bationo, J. Chianu, K.E. Giller, Roel Merckx, U. Mokwunye, O. Ohiokpehai, Pieter Pypers, Ramadjita Tabo, Keith Shepherd, E.M.A. Smaling, Paul L. Woomer, N. Sanginga Hit paper breakdown →	2010	466
5	The diversity of rural livelihoods and their influence on soil fertility in agricultural systems of East Africa – A typology of smallholder farms Agricultural Systems ·Pablo Tittonell, Anne Muriuki, Keith Shepherd, D.N. Mugendi, Kayuki C. Kaizzi, Jeremiah M. Okeyo, Louis Verchot, Richard Coe, Bernard Vanlauwe	2009	316
6	The prediction of soil carbon fractions using mid-infrared-partial least square analysis Soil Research ·L. Janik, J. O. Skjemstad, Keith Shepherd, L. R. Spouncer	2007	234
7	Soil nutrient maps of Sub-Saharan Africa: assessment of soil nutrient content at 250 m spatial resolution using machine learning Nutrient Cycling in Agroecosystems ·Tomislav Hengl, J.G.B. Leenaars, Keith Shepherd, Markus Walsh, G.B.M. Heuvelink, Tekalign Mamo, Helina Tilahun, Ezra Berkhout, Matthew Cooper, Eric Fegraus, Ichsani Wheeler, Nketia A. Kwabena	2017	223
8	Unravelling the effects of soil and crop management on maize productivity in smallholder agricultural systems of western Kenya—An application of classification and regression tree analysis Agriculture Ecosystems & Environment ·Pablo Tittonell, Keith Shepherd, Bernard Vanlauwe, K.E. Giller	2007	204
9	Exploring diversity in soil fertility management of smallholder farms in western Kenya Agriculture Ecosystems & Environment ·Pablo Tittonell, Bernard Vanlauwe, P.A. Leffelaar, Keith Shepherd, K.E. Giller	2005	198
10	Infrared Spectroscopy—Enabling an Evidence-Based Diagnostic Surveillance Approach to Agricultural and Environmental Management in Developing Countries Journal of Near Infrared Spectroscopy ·Keith Shepherd, Markus Walsh	2007	167
11	Development of Reflectance Spectral Libraries for Characterization of Soil Properties Soil Science Society of America Journal ·Keith Shepherd, Markus Walsh	2002	165
12	Prediction of Soil Fertility Properties from a Globally Distributed Soil Mid‐Infrared Spectral Library Soil Science Society of America Journal ·Thomas Terhoeven‐Urselmans, Tor‐Gunnar Vågen, Otto Spaargaren, Keith Shepherd	2010	156
13	Organic matter stabilization in soil aggregates: Understanding the biogeochemical mechanisms that determine the fate of carbon inputs in soils Geoderma ·Louis Verchot, L. Dutaur, Keith Shepherd, Alain Albrecht	2011	150
14	Quantification of total element concentrations in soils using total X-ray fluorescence spectroscopy (TXRF) The Science of The Total Environment ·Erick K. Towett, Keith Shepherd, Georg Cadisch	2013	134
15	Soil fertility management in west Kenya: dynamic simulation of productivity, profitability and sustainability at different resource endowment levels Agriculture Ecosystems & Environment ·Keith Shepherd, Meredith J. Soule	1998	128
16	Estimating the environmental costs of soil erosion at multiple scales in Kenya using emergy synthesis Agriculture Ecosystems & Environment ·Matthew J. Cohen, Mark T. Brown, Keith Shepherd	2005	126
17	Factors affecting the use of fertilizers and manure by smallholders: the case of Vihiga, western Kenya Nutrient Cycling in Agroecosystems ·Michael Waithaka, Philip K. Thornton, Keith Shepherd, Nicholas Ndiwa	2007	112
18	Empirical reformulation of the universal soil loss equation for erosion risk assessment in a tropical watershed Geoderma ·Matthew J. Cohen, Keith Shepherd, Markus Walsh	2004	109
19	What is a good level of soil organic matter? An index based on organic carbon to clay ratio European Journal of Soil Science ·Jonah Prout, Keith Shepherd, S. P. McGrath, G. J. D. Kirk, Stephan M. Haefele	2020	109
20	A Bayesian network framework for project cost, benefit and risk analysis with an agricultural development case study Expert Systems with Applications ·Barbaros Yet, Anthony C. Constantinou, Norman Fenton, Martin Neil, Eike Luedeling, Keith Shepherd	2016	97

About Keith Shepherd

Keith Shepherd is a scholar working on Environmental Engineering, Soil Science, Management, Monitoring, Policy and Law, Artificial Intelligence and Plant Science, having authored 136 papers that have together received 8.1k indexed citations. Recurring topics across this work include Soil Geostatistics and Mapping (52 papers), Soil Carbon and Nitrogen Dynamics (28 papers), Geochemistry and Geologic Mapping (26 papers), Soil and Land Suitability Analysis (22 papers), Agricultural Innovations and Practices (11 papers), Mineral Processing and Grinding (10 papers), Spectroscopy and Chemometric Analyses (9 papers) and Soil erosion and sediment transport (6 papers). The work is most often cited by research in Soil Science (2.9k citations), Environmental Engineering (3.0k citations), General Agricultural and Biological Sciences (1.0k citations), Analytical Chemistry (885 citations) and Management, Monitoring, Policy and Law (961 citations). Keith Shepherd has collaborated with scholars based in Kenya, United States and United Kingdom. Frequent co-authors include Markus Walsh, Bernard Vanlauwe, Andrew Sila, Pablo Tittonell, K.E. Giller, David J. Brown, M. D. Mays, Erick K. Towett, Georg Cadisch and Tor‐Gunnar Vågen. Their work appears in journals such as Geoderma, Soil Science Society of America Journal, Agriculture Ecosystems & Environment, Agricultural Systems and Nutrient Cycling in Agroecosystems.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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