Ph.D. in Water Science and Technology

Institute – Water Technology Centre, Indian Agricultural Research Institute, New Delhi, India

Effective date – 15 – 10 – 2014

Research Project – Based on Hydrological Modelling

M.Sc. in Forestry and Environmental Management

    University - University of Sri Jayawardenapura Sri Lanka

    Department - Forestry and Environmental Science

    Effective date - 01-06-2004

    Research Project - Based on Watershed Management.

B.Sc. sp. degree in Agriculture

     University -     University of Ruhuna, Sri Lanka

     Class - Second class upper division (Honor)

     Specialization  - Soil science

     Effective date - 24-10-2000

      Research project - Based on Soil Physics

1. IARI - New Delhi, gold - merit medal for the outstanding performance in the Ph.D. programme received at 2015 IARI Convocation.

2. A gold medal for the best presentation in Crop science and Agronomy session, Second International Symposium held on 12th July 2008; Sabaragamuwa University of Sri Lanka.  

3. RUSL Excellence Awards received at the 25th Anniversary of Rajarata University of Sri Lanka

i. A Medal received at the criterion of Researchers (10 people) having the highest H-index based on Google Scholar and RUSL affiliations

ii. A Medal received at the criterion of Researchers (10 people) having the highest number of citations for RUSL affiliated publications based on Google Scholar 

Vice-Chancellors' Awards for Faculty of Agriculture 

i. A certificate received for Researchers (1st, 2nd, and 3rd) having the highest number of citations 

ii. A certificate received for Researchers (1st, 2nd, and 3rd) having the highest H-index 

iii. A certificate received for Awards for researchers (1st, 2nd, and 3rd) have published the highest number of indexed journal articles

4. Second place of AWARD OF EXCELLENCE IN RESEARCH, SCHOLARLY AND CREATIVE WORK, 2019 and 2020, Faculty of Agriculture, Rajarata university of Sri Lanka.

5. RUSL Excellence Awards received in 2022

i. Vice chancellors award for the most outstanding senior researcher at the faculty of Agriculture RUSL

ii. A Medal received at the criterion of Researchers (10 people) having the highest H-index based on Google Scholar and RUSL affiliations

iii. A Medal received at the criterion of Researchers (10 people) having the highest number of citations for RUSL affiliated publications based on Google Scholar 

Teaching : Applied Hydrology, Watershed Managment, Land Surveying , Climate change and Water Resources of Sri Lanka 

Admin: Project Coordinator : AHEAD, Faculty DP

1. IARI - New Delhi, gold - merit medal for the outstanding performance in the Ph.D. programme received at 2015 IARI Convocation.

2. A gold medal for the best presentation in Crop science and Agronomy session, Second International Symposium held on 12th July 2008; Sabaragamuwa University of Sri Lanka.  

IMPORTANT TRAINING COMPLETED   

1. Winter School on Sustainable land management and Earth Critical Zone (ECZ):
   a journey from ECZ characterization, modelling and Geospatial Decision Support Systems, organized by the LANDSUPPORT project (www.landsupport.eu) held online from 14 -25 February 2022.
2. International Short Course on Climate Change Adaptation (CCA) in Food Security and Natural Resources Management held on 27th January – 7th February, 2020 in Kampala, Uganda, organized by Wageningen University, Netherland.
3. Academic Visitor programme at Melbourne University, Melbourne, Australia from 16 -01-2017 to 30 -03-2017.  
4. Introductory SWAT workshop held on July 16 – 17, 2012 organized by Texas Agri Life Research and Indian Institute of Technology Delhi.
5. Training on SWAT modelling held on 16 – 20 December 2013 organized by National Institute of Hydrology, Roorkee, India.
6. Asia pacific regional training of instructors on Ecosystem based Disaster Risk Reduction and Adaption held on 19 -22 May 2015 organized by the United Nations Environmental Programme  in Bangkok, Thailand. 
7. 18th Advanced short course on GIS and Applications held on 24 – 29 August 2015 at PGIS – Peradeniya University.

1. Chief Editor: International journal of Agriculture and Ecosystem published by the Faculty of Agriculture, Rajarata University of Sri Lanka

2. Editorial Board member – Insight Civil Engineering Journal.

3. Life time member of Soil Science Society of Sri Lanka.

4. Project Coordinator – Faculty DP - AHEAD , World Bank Grant

5. Advisor: Agricultural land based water pollution project – Thirappane Tank Cascade system, Global Research Foundation

6. Member at CARP for Natural Resources Managment 

1. N.S. Abeysingha ,K.M. Kularathne , A.M.K.R. Bandara and Ram L Ray (2023) Assessment of extreme rainfall through statistical process control-I chart. Journal of Earth System Science. https://doi.org/10.1007/s12040-022-02024-7
2. S. S. de Silva, N.S. Abeysingha, K. G. S. Nirmanee, P. D. S. Sandamali Pathirage, A. Mallawatantri (2022) Effect of land use–land cover and projected rainfall on soil erosion intensities of a tropical catchment in Sri Lanka. International Journal of Environmental Science and Technology https://doi.org/10.1007/s13762-022-04606-w
3. N.S.Abeysingha (2022) A review of recent changes in rainfall trend in Sri Lanka,  Tropical Agricultural Research and Extension, 25(1), pp.1–13. DOI: http://doi.org/10.4038/tare.v25i1.5584
4. D.M.B.M. Deegala, N.S. Abeysingha, L. P. Muthuwatta, and Ram L. Ray (2022) Sustainable growing areas for sugarcane in Sri Lanka under a changing climate Sugar Tech, https://doi.org/10.1007/s12355-022-01155-x
5. B.A.P. Serasinghe, N.S. Abeysingha, DMSH Dissanyake  and N.V.H.S.K. Vithanage (2022) Effectiveness of local plant materials in dry zone Sri Lanka as natural coagulants in treating turbid water, Journal of agriculture science Sri Lanka, 16(4).
6. Ram L. Ray, Nawab Khan, N. S. Abeysingha, Shahid Farooq, Sudhir K. Singh and Muhammad Umair (2022) Quantifying surface soil organic carbon distribution globally during the COVID-19 pandemic using satellite data, Geocarto International
7. N.S. Abeysingha, S.P. Dissanayake,S. Sumanaweera, S.S.K. De Silva (2021) Cascade Tank Water Quality Management: A Case Study in Thirappane Tank Cascade System, Sri Lanka,  Journal of Environmental & Earth Sciences, .3.(1) https://doi.org/10.30564/jees.v3i1.3277
8. N.S.Abeysingha, M.G.Wickramasuriya, T.J.Meegastenna, (2020) Assessment of meteorological and hydrological drought; a case study in Kirindi Oya River basin in Sri Lanka, Int. J. Hydrology Science and Technology, Inderscience. Vol. 10, No. 5, 2020
9. S.M.Jayasekara, N.S.Abeysingha and T. J. Meegastenna ( 2020) Streamflow trends of Kelani river basin in Sri Lanka, the use of Innovative Trend Analysis approach, NSF journal, 48(4)449-462, DOI: http://dx.doi.org/10.4038/jnsfsr.v48i4.9440
10. N.S. Abeysingha, Adlul Islam, and Man Singh (2020) Assessment of climate change impact on flow regimes over the Gomti River basin under IPCC AR5 climate change scenarios, Water and Climate change. DOI: 10.2166/wcc.2018.039.
11. N.S. Abeysingha and U.R.L.N. Rajapaksha (2020) SPI based spatiotemporal drought over Sri Lanka, Advances in Meteorology. https://doi.org/10.1155/2020/9753279
12. N.S. Abeysingha, K.H.R.S. Maduranga, Surendra Singh and D. M. S. Duminda, (2020) Phytoextraction of nutrients and heavy metals by two monocot plants in Thaulla area of small reservoir in Anuradhapura, Sri Lanka, Journal of Agriculture Science.
13. N.S. Abeysingha, M.I. Madusanka, Bandara Rotawewa and Nimal Gunasena (2019) Variation of water quality of four micro watersheds outlets in upstream of Mahawali river during Maha cropping season, Tropical Forestry and Environmental Science, 9(2).
14. W.D.S. Nisansala, N.S.Abeysingha, Adlul Islam and A.M.K.R. Bandara,(2019) Recent Rainfall Trend over Sri Lanka ( 1987 – 2017) International journal of Climatology DOI: 10.1002/joc.6405.
15. D.L.D.Panditharathne, N.S.Abeysingha, K.G.S.Nirmanee and Ananda Mallawatantri(2019) Application of Revised Universal Soil Loss Equation (RUSLE) Model to assess Soil Erosion in ‘Kalu Ganga’ River basin in Sri Lanka. Applied and Environmental soil Science – Hindawi., https://doi.org/10.1155/2019/4037379.
16. K. G .M. W. Gunapala and N. S. Abeysingha (2019) Chemical precipitation function of Thaulla area in small tank in Sri Lanka, Resources and Environment Vol.9 No.03.
17. N.S.Abeysingha, D. G. P.G. C. Senavirathna, H. M. G. N. S. C. Bandara, K.G.S. Nirmanee (2019) Assessment of Soil-related problems in low yielding areas of Gal Oya Sugarcane Plantation in Sri Lanka, journal of Soil Science Society of Sri Lanka. 
18. N.S. Abeysingha, D.S.M.D. Silva and D. M. S. Duminda (2018) Hydro chemical assessment of Agro-well water for irrigation in Thalawa block in Mahaweli system-H in Anuradhapura, Sri Lanka –Journal of Agricultural sciences, Sri Lanka, Vol 13, No 03, 186 -199.
19. N.S.Abeysingha, K.B. Dassanayake and C.S.Weerarathna (2018) Will restoration of ecological functions of tank cascade system contribute to reduce CKDu in Sri Lanka? a Review. Journal of environment management and sustainable development, 7 (3), DOI: 10.5296/emsd.v7i3.13129.
20. N.C Wijesundara., N.S Abeysingha, and D. M. S. L. B Dissanayake. (2018) GIS-based soil loss estimation using RUSLE model: a case of Kirindi Oya river basin, Sri Lanka, Modeling Earth Systems and Environment, DOI 10.1007/s40808-018-0419-z.
21. C.M. Fayas, N.S. Abeysingha, K.G.S. Nirmanee, Dinithi Samaratunga and Ananda Mallawatantri (2019) Soil loss estimation using RUSLE model to prioritize erosion Control in Kelani river basin in Sri Lanka, ISWCR_2018_135, Soil and Water Conservation Research journal https://doi.org/10.1016/j.iswcr.2019.01.003.
22. N. S. Abeysingha, M Singh, A.Islam ,  M Khanna., V. K Sehgal & H, Pathak  (2017 ) Impacts of Climate Change on Stream Flow in the Gomti River Basin of India, Journal of Agricultural Engineering ISAE 54(4), http://www.isae.in / journal_jae.aspx.
23. S.D.Kottagoda and N.S.Abeysinghe (2017), Prioritization of watersheds in Kelani river basin for soil and water conservation -Geomorphometric analysis, Journal of National Science Foundation 45 (3): 273 – 285.
24. N.S.Abeysingha, J,M.N.S.Jayasekara, T.J.Meegastenna ( 2017) Streamflow trends in up and midstream of Kirindi Oya river basin in Sri Lanka and its linkages to rainfall, MAUSAM, 68, 1 99-110.
25. N.S.Abeysingha, A.M.K.R.Bandara, Surendra Sing (2017) Effect of Eppawela High Graded Rock Phosphate (HERP) applied with Vinasse on yield and quality of Sugarcane (variety CO775), National Academy of Science Letters, and 40:253-256.
26. N.S.Abeysingha, J.P.H.U.Jayenethithi, E.J. Kosgollegedara, S.Hammer (2016), Variation in Soil Quality Parameters in the Thaulla Area of a Small Reservoir – A Case Study of Ulankulama Tank at Anuradhapura, Sri Lanka, Journal of Agricultural Physics, 2016 ( 16, 1,2) 1-8.   
27. N.S. Abeysingha, Man Singh, Adlul Islam, V. K. Sehgal, (2016) Climate change impacts on irrigated rice and wheat production in Gomti River basin of India: a case study, Springer Plus, DOI 10.1186/s40064-016-2905-y.
28. N.S.Abeysingha, Man Singh, V. K. Sehgal, Manoj Khanna, & Himanshu Pathak, Analysis of trends in streamflow and its linkages with rainfall and anthropogenic factors in Gomti River basin of north India, Theoretical and Applied Climatology, Accepted on 21 Jan 2015 -  DOI - 10.1007/s00704-015-1390-5.
29. N.S. Abeysingha, Man Singh, V. K. Sehgal, Manoj Khanna, Himanshu Pathak, Priyantha Jayakody and Raghavan Srinivasan. Assessment of water yield and evapotranspiration over 1985 to 2010 in the Gomti River basin in India using the SWAT model, Current science, Vol 108, No 12, 2015.
30. N.S. Abeysingha, Man Singh, V.K. Sehgal, Manoj Khanna, and Himanshu Pathak, Trend Analysis of Rainfall and Temperature of Districts of Gomti River Basin in North India, Journal of Agricultural Physics 14, 2014, pp56-66.
31. H.A.S.Weerasingha, N.S.Abeysingha and B.D.S.K.Ariyawansha, The effect of High-Grade Eppawala Rock-Phosphate as a Phosphorus substitute on yield and quality of Sugarcane (Saccharum officinarum) in Sri Lanka, Proceeding of the symposium on Miner export crops, 16-17 August 2012.
32. N.S.Abeysingha and C.S.Weerarathne ‘Preliminary study on quantification of Biological Nitrogen fixation in Sugarcane grown in Sevanagala in Sri Lanka’ Journal of National Science Foundation 2010, 38(3), 203-206.
33. L. Samarappuli, P.Karunarathne, U.Mitharasena, and N.Shantha,; Mucuna bracteata Ideal cover crop for soil and water management in Rubber cultivation, Tropical Agriculture Research and extension 6, 2003.
34. B.R.G.I.T. Ranasingha, T.E.Weerawardena, N.S.Abeysingha (2016), Tea refuse as a material for compost production. Symposium proceeding 3rd international research symposium, Rajarata University of Sri Lanka. 
35. Suryendra Singh, S. Elamathi, P. Anandhi, Lalita Prakash Masih, N.S. Abeysingha and Gautam Ghosh (2019) Response of zero-till lentil (Lens culinaris) to residual effect of planting systems, nitrogen and weed management practices in rice. Journal of Food Legumes 32(3): 194-199
36. Surendra Singh, S. Elamathi,  Gautam  Ghosh  and  N.S. Abeysingha (2021) Sesbania, Azolla and herbicide use for weed management and optimizing yield in direct-seeded rice, Indian Journal of Weed Science 53(1) 4
37. A G S D De Silva, N S Abeysingha, D M S Duminda (2019) Trace elements in commercially available Triple Super Phosphate Fertilizers in Sri Lanka. Sri Lankan journal of Agriculture and ecosystem Vol1 (2).

• N.S Abeysingha, C.S Weerathne, Fertilizer application to Sugarcane cultivation, Advisory Secular 12, 2007; Sugarcane research institute, udawalawe, Sri Lanka.
• N.S.Abeysingha, Combat soil erosion for soil fertility in Dry zone, leaflets in Sinhala medium for the farmers community in the dry zone in Sri Lanka.
• Published three news paper articles on Soil degradation and Biological nitrogen fixation associated with sugarcane in Sarubima supplement of Divaina Newspaper.
• Published a newspaper article on ‘The tank cascade system to improve the water quality of dry and intermediate zone of Sri Lanka.’ In Mirror 

1. Introductory SWAT workshop held on July 16 – 17, 2012 organized by Texas Agri Life Research and Indian Institute of Technology Delhi.
2. Training on SWAT modelling held on 16 – 20 December 2013 organized by National Institute of Hydrology, Roorkee, India.
3. Asia pacific regional training of instructors on Ecosystem based Disaster Risk Reduction and Adaption held on 19 -22 May 2015 organized by the United Nations Environmental Programme at Bangkok, Thailand. 
4. 18th Advanced short course on GIS and Applications held on 24 – 29 August 2015 at PGIS – Peradeniya University.