Prof. John Didacus Njoku

Prof. John Didacus Njoku


BSc., MSc., PhD


John D.  Njoku is a Professor of Geography & Environmental Management at the Federal University of Technology, Owerri, Nigeria. He holds a BSc (Hons) degree in Geography and Regional Planning from the University of Benin, MSc degree in Geography and Planning from the University of Lagos, Akoka Yaba, Lagos, and a PhD degree in Geography and Environmental Management from the Imo State University Owerri, Nigeria and his research centers on Monitoring Environmental Changes and applied, tropical climatology. He has undertaken administrative responsibilities in the University, including

Pioneer HoD, Dept. of Urban & Regional Planning                                                        2010 – 2017

Pioneer Associate Dean, School of Environmental Sciences                                      2014 – 2016

Member, University Examination Misconduct Committee                                             2012 – 2016

Member, Several University & Senate Committees                                                       2010 – 2025

First Elected Dean, School of Environmental Sciences                                                2021 – 2025

Formerly, Chairman Committee of Deans, FUTO                                                          2022 – 2023


He is a Research Fellow, the Earth System Governance Network, Sweden. He was invited to the 1st and 2nd African Food Security Conference in 2013 and 2015 and Speaker at the International Conference on Applied Geo-informatics for Society and Environment in 2011 all in Kenya. He spoke at the Third African Leadership Conference on Space Science and Technology for Sustainable Development in Algeria, among others.He has been a Member, International Review Panel, Conferences on Earth System Governance 2019 – Date. He was Rapporteur of the Nigeria National Branch, Ecosystem Based Adaptation for Food Security in Africa Assembly. He is a member of the Nigerian Cartographic Association, Association of Nigerian Geographers and Nigerian Environmental Society. He was Editor, Journal of Cartography and GIS and has published severally in Journals. He is consultant to the Federal Ministry of Environment on EIA reviews. He has done some works for the Federal Ministry of Science, Technology and Innovation on the effect of Climate Change on the Environment Sector.

He is happily married to Mrs. Angela Ogechi John-Njoku, and are blessed with two boys, Francis and Michael.

Academic Qualification

2004 – 2007, Imo State University, Owerri, Nigeria.

PhD in Geography & Environmental Management (Remote Sensing application to resources management)

1991 – 1992, University of Lagos, Akoka Lagos, Nigeria

MSc in Geography & Planning (Remote Sensing & Mapping of Environmental Resources)

1981 – 1985, University of Benin, Benin City, Nigeria,

BSc (Hons.) in Geography & Regional Planning




  • Research Fellow, the Earth System Governance Network (c/o Utrecht University, The Netherlands)
  • Research Affiliate, Institute of Environmental Health and Environmental Justice (IEHEJ), FUTO, Nigeria
  • Research Associate, Centre for Res. and Inter. Dev. Federal Univ. of Technology Owerri.
  • Member, Nigeria Environmental Society
  • Member, Nigerian Cartographic Association
  • Member, Association of Nigerian Geographers
  • Member, International Review Panel for Earth System Governance Network Project:  International

Conferences, 2019 – Date

  • Member, Association for the Sciences of Limnology and Oceanography, USA
  • Member, International Society for Urban Health (ISUH), New York, USA
  • Member, Imo State Environmental Protection Agency Public Awareness Working Group for the UNDP Support Program on Environment and Natural Resources Management (1996)
  • Member, Imo State Productivity Committee (1995 – 2003)
  • Member, Imo State Export Promotion Committee, (1996 – 2003)
  • Member, Imo State Committee on African Growth and Opportunity Act of the USA (1998 – 2003)

Courses Assigned to Teach



  • Consultancy responsibilities: Panel Member/Consultant on EIAs to Environmental/Social Impact Assessment Dept, Federal Ministry of Environment, Abuja

EXPERT, Environment Sector, Technology Needs Assessment (TNA) programme, Federal Ministry of Science, Technology and Innovation, Abuja.

Lead Investigator: A baseline research project on “Mapping of soil moisture conditions in SE Nigeria using geospatial technologies” sponsored by TETFUND.


  • Federal University of Technology Owerri, Imo State 2002 – Date
  • Visiting Senior Lecturer, Imo State University, 2007 – 2015
  • Manufacturers Association of Nigeria (MAN), Lagos, Nigeria
  • Exec. Sec. (Ikeja Branch) 1993 -1995, & Exec. Sec. (Imo/Abia Branch), 1996 – 2002
  • National Population Commission H/Q, Lagos, Nigeria, 1991 – 1993
  • St. Catherine’s Model School, Surulere Lagos, Nigeria, 1988 – 1991

Research Interest

Overall Research/ Consultancy Areas

Applied climatology andenvironmental vulnerability assessment and monitoring, natural resources dynamics, climatic dynamics and socio-economic impacts, and environmental change management, using mainly geospatial technologies)


Contemporaryresearch sub-themes: Highlighting application of geospatial technologies

  • Climatic anomalies, deforestation and dietary changes
  • Climatic anomaly and spatio-temporal migratory erosional footprints on the coastal corridors
  • Climatic uncertainties and emerging urban footprints using geospatial technologies
  • Erosional footprints in sprawling peri-urban areas amidst climatic crises
  • Trending transformation of cities and sustainable urban livelihood
  • Environmental Vulnerability Assessments using geospatial technologies
  • Urban health and wellbeing
  • Climate crises induced transformations of coastal fringes
  • Environmental Resource Sensitivity & Climatic Changes/Variation using remotely sensed data.


  1. Diugwu, I. A, M. N. Eneje, H D Musa, S. O. Yusuf, J. D. Njoku (2022)  Perception of housing quality by households in peri-urban neighbourhoods of Owerri Municipality. CSID Journal of Infrastructure Development, (5) 1: 15-26. ISSN 2407-4438.


  1. Uyo, CN, Njoku, J D, Iwuji, M C, Ihejirika, CE, and Njoku-Tony, RF (2021) Assessment of air quality in livestock farms and abattoirs in selected Local Government Areas of Imo State. International Journal of Advanced Academic Research, Vol. 7, Issue 8, pp. 54 – 68, ISSN: 2488-9849.


  1. Chris-Emenyeonu, C M., Onweremadu, E.U., Njoku, J.D. and Ahukaemere, C.M. (2020). Soil Mineralogy and its impact on the fertility of soils for Urban and Peri-Urban Agriculture in Southeastern Nigeria. International Journal of Agriculture and Rural Development, SAAT FUTO, Vol., 23 (1), pp. 4808 – 4815.


  1. Chris-Emenyeonu, C M., Onweremadu, E.U., Njoku, J.D. and Ahukaemere, C.M. (2020). Suitability evaluation of urban soils underlined by Asu River Parent Material for Cassava Manihotesculenta and Bambara groundnut (vignasubterranea (L.) Verdc) Production in Ebonyi, Southeastern Nigeria. World Journal of Agriculture and Soil Science. 4 (4). DOI 10.33552/WJASS.2020.04.000599.


  1. Chris-Emenyeonu, C M., Onweremadu, E.U., Njoku, J.D., Ahukaemere, C.M., and Aririguzo, B.N. (2020). Soil Carbon Sequestrations in Forest Soils in Relation to Parent Material and Soil Depth in Southeastern Nigeria, American Journal of Climate Change, 9, 400-409.


  1. Okorie, FC, JD Njoku, EU Onweremadu and MC Iwuji (2019): Climate change and food crop production in Imo State, Nigeria: An analysis of 30-year period. African Journal of Social and Behavioural Sciences, Imo State University Owerri, Nigeria. Vol.9, No. 2, pp. 321 – 342.


  1. Okorie, FC, Njoku, JD, Onweremadu EU and MC Iwuji (2019). Analysis of Physico-Chemical Properties of Soil in relation to Arable Crop Production in Abia State, Nigeria. International Journal of innovative Research and Development, DOI No.: 10.24940/ijird/2019/v8/i9/SEP19033, Vol. 8, Issue 9, pp. 179 – 193.


  1. Amangabara, GT, JD Njoku and OI Egbuawa, (2019). Gully erosion: A comparison of contributing factors in Njaba watershed, Imo State, Nigeria. International Journal of Scientific and Engineering Research, Vol. 10, Issue 8, pp. 1563 – 1584.


  1. Iwuji, MC,Anyalewechi, GM, Njoku, JD, Iwuji, JC., Ihejirika, C.E., Ukaegbu, K.O.E. (2018). Assessment of spatial distribution of ground water quality in Owerri. Multidisciplinary Journal of Research and Development Perspectives, Vol. 7, No. 1, pp. 1 – 184


  1. MC Iwuji, CP Ibe, JD Njoku, SO Anyanwu, GT Amangabara,N Ac-Chukwuocha and KOE Ukaegbu (2017) Analysis of Land Use and Land Cover Dynamics in Orlu, Nigeria. Asian Journal of Environment & Ecology 4(1): 1-10


  1. GT Amangabara, JD Njoku and MC Iwuji, (2017). People’s Perception of Soil Erosion and Its Impact in Imo State, Nigeria. IMPACT: International Journal of Research in Applied, Natural and Social Sciences, 5, Issue 12, 77-88.


  1. MC Iwuji1, CP Iheanyichukwu, JD Njoku, FI Okpiliya, SO Anyanwu, GT Amangabara and KOE Ukaegbu (2017) Assessment of Land Use Changes and Impacts of Dam Construction on the Mbaa River, Ikeduru, Nigeria Journal of Geography, Environment and Earth Science International 13(1): 1-10.


  1. Iwuji, MC, OL Iroh, JD Njoku, SO Anyanwu, GT Amangabara and KOE Ukaegbu, (2017). Vulnerability assessment of soil erosion based on topography and vegetation cover in a developing city of Orlu, southeast Nigeria. Asian Journal of Environment and Ecology, 4(4) 1 – 10.


  1. JD Njoku, GT Amangabara and UD Nkogho, (2017).Temporal assessment of soil loss using the Revised Soil Loss Equation model and geospatial techniquesJournal of Scientific and Engineering Research, 4(6), pp. 1-14.


  1. Njoku JD, Ukaegbu KOE, Osumgborogwu IE, Ude AD, Telu M, (2017). Correlate Mapping of Impervious Surfaces as Flood Risk Assessment Strategy in Owerri, Southeastern Nigeria. Asian Journal of Environment & Ecology, 2(4): 1-11.


  1. Amangabara, GT, Njoku, JD, Iwuji, MC and Nlemedim VC, (2017). Assessment of the suitability of some sites for acquaculture development in the Onitsha sub-basin, Anambra State, Nigeria using GID methods. FUTO Journal Series, Vol. 3, Issue 1, pp.114 – 130.


  1. TE Ebe, JD Njoku and AO Enem, (2017). Physico Chemical analysis of soils Proximate to artisanal refining plants in southern Nigeria, British Journal of Environmental Sciences,5, No.1, pp.18-26, European Centre for Research Training and Development, UK. (


  1. Njoku, JD and Ogueri, R (2016). Multi-Temporal Assessment of Land Use and Land Cover Changes using Geospatial Techniques. The Nigerian Journal of Cartography and Geographic Information System, Vol.11, No 1, pp 21 – 38. The Nigerian Cartographic Association.


  1. Njoku, JD, TE Ebe and AO Enem, (2016) Analysis of heavy metals contamination by artisanal refining

plants in the Nigeria Delta Region, Southern Nigeria. British Journal of Environmental Sciences, Vol.4,

No.3, pp.39-48, European Centre for Research Training and Development UK (


  1. Njoku, JD, Ukaegbu KO, Amangabara GT, Iwuji MC and Anyanwu JC, (2015). Correlation of impervious surfaces and ambient temperature variation in Owerri, southeastern Nigeria. Journal of Renewable and Alternative Energy Technologies, Vol. 1, pp. 115-123


  1. Ebe TE, Mgbemena IC, Njoku-Tony RF, Njoku JD and Emereibeole E, (2015). Comparative analysis of petroleum ether and aqueous extracts of Neem leaf and Neem stem on different stages of anopheles gambiae. Journal of Natural Sciences Research, Vol.5, No.12, pp. 95 – 98. (


  1. Njoku, JD, BN Ubbaonu and WN Ojinere, (2015). Prevalence of HIV/AIDS scourge and gender performance levels in Imo State of Nigeria. International Journal of Gender and Development Issues, Vol. 2 No. 4., pp. 11 – 20, Centre for Women, Gender and Development Studies, Federal University of Technology, Owerri.


  1. GT Amanbagara, Njoku and M. Obenade, (2015) Applying Satellite Remote Sensing and GIS Tools in the Study of Gully Erosion. Journal of Scientific Research & Reports, Vol. 4(3), pp. 253-264. DOI: 10.9734/JSRR/2015/12753.


  1. Njoku, JD, MC Iwuji, IL Osuocha, and FC Okoro, (2014). Effects of oil spillage on surface water resources in Ohaji and Egbema areas of Imo State, southeastern Nigeria. Journal of Nigerian Environmental Society Vol 1 (1): pp. 88 – 96.


  1. Njoku, JD, (2013). GIS-based Site Selection Analysis for Public Healthcare Facilities in the Twin City, Owerri, South-eastern Nigeria. International Journal of Applied Research and Technology 2(4), pp. 151 – 172.


  1. Njoku, JD, (2013).Imperatives of vehicular traffic dynamics and roads network for service delivery in Owerri metropolitan city, southeastern, Nigeria. Asian Academic Research Journal of Multidisciplinary, Vol. 1. Issue 9, pp. 1 – 17.


  1. Njoku JD, GT Amangabara and PN Duru, (2013). Spatial assessment of urban flood risks in Aba metropolis using geographical information systems techniques. Global Advanced Research Journal of Environmental Science and Toxicology, Vol. 2 (3) pp. 086 – 092.


  1. Njoku, JD, (2013). Temporal assessment of linkage between infrastructural provisions and temperature variations in Owerri metropolis, Southeastern Nigeria. Sokoto Journal of the Social Sciences, a Bi-annual Publication of the Faculty of Social Sciences, Usmanu Danfodiyo University, Sokoto, vol., 2 (1), pp. 122 – 135.


  1. Njoku JD, (2013). Agro-Ecological Assessment of Soil Quality of a River Watershed in the Niger Delta Region of Nigeria. Journal of Environment and Earth Science, Vol. 3, No.1, pp. 48 – 56.


  1. Okorie FC, I. Okeke, Njoku and P. Duru, (2012). Climate variability and malaria incidence: Impact and Adaptation in Owerri Municipal of Imo State, Nigeria. Advances in Education Research, Vol. 6, pp. 98 – 104.


  1. EU Onweremadu, JD Njoku, BOA Anene and C Chikere-Njoku, (2012). Growth of groundnut (Arachis hypogaea ) on degraded isohyperthermic arenic kandiudult amended with Oyster shell in a university farm, Southeastern, Nigeria Journal of Soil Science and Environmental Management, Vol. 3(12), Academic Journals.


  1. Iwuji MC, JD Njoku, AJ Anekwe; JU Uwazuruonye; and GT Amangabara(2012). Analysis of erosion site dynamics using geospatial data: A case study of Amucha in Njaba LGA, Imo State.Journal of Nigerian Environmental Society,, 7 No.3, pp. 67 – 73.


  1. Ebe TE, Mgbemena IC, Njoku JD, Ihejirika CE, Emeribe E and Edward KC, (2012). Remediation of crude oil polluted soil in Otuogidi town in Bayelsa State of Nigeria using poultry manure.Journal of Research in Biology2(6), pp. 544-548


  1. Njoku JD, (2012)Investigations on the impact of some changing climatic factors on forest cover in Southeastern Nigeria. Advances in Science and Tech.: An African Jour. for Res., Innovation and Discovery (special Issue on Climate Change): perspectives from Africa, 6, No 2S (1 – 144), pp. 82 – 90.


  1. Amangabara, GT, JD Njoku and MC Iwuji, (2012). Comparative Analysis of Access to Water Supply in three communities in Rivers State. Journal of Nigerian Environmental Society, 7, No. 1, pp. 110 – 119.


  1. Ihejirika CE, JD Njoku, LA Nwaogu, M Obenade TE Ebe, CC Ejiogu and MC Iwuji, 2012)..Effects of Meteorological Events on the Levels and Interactions of Chemical Indices of a Polluted Freshwater System. International Journal of Environmental Science, Management and Engineering Research, 1(1), pp. 31 – 37.


  1. Ogbuagu HD, JD Njoku, AP Uzoije, JI Nwachukwu and TE Ebe, (2012). Correlates in Groundwater Quality Parameters and Textural Classes of Soils in a Peri-industrial District of the Nigerian Delta Region. Journal of Environment and Earth Science, Vol. 2, No.3, pp.40 – 51.


  1. Opara, IU, SN Obasi, P Opoke, JD Njoku, BOA Anene and C Chikere-Njoku, (2012). Growth of groundnut (Arachis hypogea L.) grown on degraded isohyperthermic arenic kandiudult amended with oyster shell in a University farm, southeastern Nigeria. International Journal of Agriculture and Rural Development, Volume 15 (1), pp. 895 – 901.


  1. Amnagabara, GT and JD Njoku, (2012).Assessing groundwater vulnerability to the activities of artisanal refining in Bolo and environs, Ogu/Bolo Local Government Area of Rivers State, Nigeria, British Journal of Environment, and Climate Change, 2 (1), pp. 28 – 36. DOI : 10.9734/BJECC/2012/1088.


  1. Njoku JD, (2012). Application of Geographical Information Systems Technology in Soil Fertility Variation Analysis in Southeastern Nigeria. An International Journal of Science and Technology, Vol. 1 pp. 47– 59.


  1. Ihejirika CE, Njoku JD, Ujowundu CO, Onwudike SU, and Uzoka CN, (2011). Synergism between season, pH and conductivity and total dissolved solids (TDS) of Imo River quality for agricultural irrigation. Journal of Biodiversity and Environmental Sciences, Vol., 1 No. 5, pp. 26 – 31.


  1. Ogbuagu, HD, Njoku, JD and Ayoade, AA, (2011). Trends in Microbenthal Biotypes of Imo River in the Nigerian Delta Region. Journal of Biodiversity and Environmental Sciences,, 1 No. 4, pp. 22 – 28.


  1. Njoku, JD, Nnaji AO and Iwuji MC, (2011). Spatial Analysis of Soil Fertility Using Geographical Information Systems Technology. African Research Review: An International Multidisciplinary Journal, Vol. 5 (4) Serial No. 21, pp. 511 – 524.


  1. Onweremadu, EU, Okuwa JA, Njoku JD and Ufot UO, (2011). Soil Nitrogen Forms Distribution in Isohyperthermic Kandiudults of Central Southeastern Nigeria. Nigerian Journal of Agriculture, Food and Environment, Vol. 7, No. 2, pp. 52 – 56


  1. Anene BO, Chikere-Njoku C, Ndukwu BN and Njoku JD, (2010).Properties of Degraded Soils Cultivated with Amaranth as influenced by Palm bunch Refuse Ash. International Journal of Agriculture and Rural Development, Volume 13 (2), pp. 256 – 258


  1. Njoku, JD, Ebe, TE, & Pat-Mbano, EC, (2010). Detection and Mapping of Land Use and Land Cover Classes of a Developing City in Southeastern Region of Nigeria, using Multi-band Digital Remotely-sensed Data. African Research Review: An International Multi-disciplinary Journal vol. 4, No. 3b, pp. 315 – 330.  International Association of African Researchers and Reviewers Inc


  1. Njoku JD, (2010b). Comparative Detection of Infrastructural Land Conversion Dynamics in a Nigerian City using Space Technology. African Research Review: An International Multi-disciplinary Journal, vol. 4, No. 3a, pp. 341 – 348. International Association of African Researchers and Reviewers Inc.


  1. Iwuji, MC, JD Njoku and JU Uwazuruonye, (2010). Degradation of the Tropical Rainforest in Akamkpa Local Government Area of Cross River State. Journal of the Nigerian Environmental Society, Vol. 5, No. 4, pp 55 – 65.


  1. Njoku JD, JI Soba, JU Uwazuruonye, TE Ebe, MC Iwuji and FC Okorie, (2010). Terrain Modeling and Mapping for Storm Water Routing and Management in Owerri Metropolis. Journal of the Nigerian Environmental Society, vol., 5, No.3, pp. 77 – 87.


  1. Njoku JD, (2010a).Analysis of the Effect of Global Warming on Forests of Southeastern Nigeria Using Remotely- Sensed Data, Advances in Science and Technology [An African Journal for Research, Innovation and Discovery Volume 4, Number 1, pp. 88 – 90.


  1. Njoku JD, (2008). Implications of Temperature Dynamics for Forests Management in Southeastern Nigeria, Nigerian Journal of Geography and Environment, 1 pp. 191 – 201. Dept. of Geography, Univ. of Nigeria, Nsukka.


  1. Njoku, JD, CG Okoli, AP Uzoije and MC Iwuji, (2006). Assessment of Multi- band Capabilities in the Detection of Built-Up Areas in Northwestern Nigeria. Journal of Applied Sciences, Asian Network for Scientific Information. 6 No. 10, pp. 2177 – 2184.


  1. Nnaji, AO, JD Njoku and NC Ume, (2006). Environmental Controls of Rainfall over Northern Nigeria: Identification and Verification. Environmental Research and Developmental Journal, Faculty of Engineering and Environmental Sciences, Imo State University, Owerri, Vol. 1 No. 1 pp. 112-126.


  1. Njoku, JD, (2006). Comparative Mapping of Agricultural Land Use and Land Cover Classes at a Regional

Scaleusing SPOT Imagery, a Case Study of Sokoto Environs, Nigeria. Environmental Research and

Development, Journal Faculty of Engineering and Environmental Sciences, Imo State University, Owerri.

              Vol.1, No. 1 pp.76-91.


  1. Okoli, CG, IV Njoku, N Ac-Chukwuocha, PC Njoku, JD Njoku, MU Dike and RU Ojiegbe, (2005). Quality Characteristics of Groundwater Utilized by Resident Students of a Nigerian University. Journal of Applied Sciences, Asian Network for Scientific Information. Vol. 5 No. 6, pp. 1088-1091.


  1. Njoku JD, (2005). A quantitative Approach to multi-band assessment of Spot imaging system for land use and land cover mapping in northwestern Nigeria. Res. Jour. in Engr. Sci. and Tech. Fed. Univ. of Technology Owerri Vol.2, No. 1, pp 87 – 101.


  1. Uzoije, AP and JD Njoku, (2004). Impacts of Biocides on Water Quality’. Res. Jour. in Engineering, Science & Technology, Fed. Univ. of Techn. Owerri, Vol.1, (2) pp. 047-052

Research/Publication Links


Research Gate Profile URL:

Google Scholar Page URL: