Central Department of Environmental Science has been offering the PhD programme since 2010 in Environmental Science as a full-time degree with three years of dedicated time. Candidates with a Master’s degree in natural and applied science are eligible to apply, and a PhD degree is awarded in Environmental Science. For admission, the candidates must successfully defend a proposal to the Departmental Research Committee (DRC) at CDES; and pass the entrance examination administered by the Dean’s Office of the Institute of Science and Technology, Tribhuvan University.
List of PhD Scholars and Respective Supervisor/Co-supervisor as of December 2022.
| S.N | Name of Students | Research Title | Remarks |
| 1 | Dil Kumar Hangsurung Limbu | Effect of human induced disturbances of high altitude Himalayan rangelands in proposed protected area Tinjure Milke Jaljale of Eastern Nepal. Supervisor/Co-supervisor: Prof. Dr. Madan Koirala; Dr. Zhanhuan Shang (Lanzhau University, China) | Awarded: 10/11/2015 |
| 2 | Narayan Prasad Gaire | Climate trend and treeline dynamics in Nepal Himalaya. Supervisor/Co-supervisor: Prof Dr. Madan Koirala; Dr. Dinesh Raj Bhuju | Awarded: 29/09/2016 |
| 3 | Suman Man Shrestha | Heavy metal contamination in groundwater resources of the Kathmandu Valley, Nepal. Supervisor/Co-supervisor: Prof. Dr. Kedar Rijal; Prof. Dr. Megh Raj Pokhrel | Awarded: 10/02/2017 |
| 4 | Roshan Sherchan | Assessing the effectiveness of mountain conservation policy and practices to improve the livelihoods of indigenous Tamang people. Supervisor/Co-supervisor: Prof. Dr. Kedar Rijal; Dr. Siddhartha Bajra Bajracharya | Awarded: 03/08/2018 |
| 5 | Prabina Rana | Climatic and altitudinal impacts of Rhododendron campanulatum D. Don and its endophytic fungi assemblage at tree line ecotone, Nepal Himalaya. Supervisor/Co-supervisors: Prof. Dr. Madan Koirala, Dr. Dinesh Raj Bhuju; Dr. Chuenchit Boonchird | Awarded: 23/08/2018 |
| 6 | Krishna Bahadur Bhujel | Fire induced carbon emission from Tropical Mixed Broad Leaf Forest of Nepal. Supervisor/Co-supervisor: Prof. Dr. Rejina Maskey Byanju; Dr. Ambika Prasad Gautam | Awarded: 12/01/2021 |
| 7 | Hem Raj Regmi | Food security in the context of climate change: a statistical modelling of three ecological belts of mid-western Nepal. Supervisor/Co-supervisor: Prof. Dr. Kedar Rijal; Dr. Ganesh Raj Joshi | Awarded: 02/02/2021 |
| 8 | Ananta Ram Bhandari | Assessment of ecosystem services in Panchase protection forest, Nepal. Supervisor/Co-supervisor: Dr. Udhab Raj Khadka; Dr. Keshav Raj Kanel | Awarded: 04/03/2021 |
| 9 | Bhupendra Das | Emission inventory of Nepal’s air pollutants for effective air quality management. Supervisor/Co-supervisor: Prof. Dr. Rejina Maskey Byanju; Dr. Prakash V. Bhave; Shiva Praveen Puppala | Awarded: 18/04/2022 |
| 10 | Reeta Singh | Assessment of water availability and river health in the Marshyangdi watershed, Nepal. Supervisor/Co-supervisor: Prof. Dr. Sadhana Pradhanang Kayastha; Prof. Dr. Bishnu Prasad Pandey | Awarded: 27/07/2022 |
| 11 | Mr. Bharat Prasad Bhandari | Characterization of landslide hazard in the sub-Himalayan zone of Nepal. Supervisor: Dr. Subodh Dhakal | Awarded: 27/09/2023 |
| 12 | Mr. Ashok Baniya | Impact assessments of hydropower development on aquatic indicator species in Trishuli and Marsyangdi river basins. Supervisor: Prof. Dr. Chhatra Mani Sharma | Ongoing |
| 13 | Mr. Binaya Joshi | Impact of climate change variability in crop production and adaptation strategies in agriculture sector. Supervisor/Co-supervisor: Prof. Dr. Kedar Rijal; Dr. Ramesh Prasad Sapkota | Ongoing |
| 14 | Mr. Buddhi Ram Kumal | Pesticides-Induced contamination in vegetables, soil and water in Kavrepalanchowk and Dhading districts of Nepal. Supervisor: Prof. Dr. Udhab Raj Khadka | Ongoing |
| 15 | Ms. Deepa Pradhan | Rainfall-runoff and flood vulnerability under climate and landscape change in central Himalaya. Supervisor/Co-supervisor: Dr. Sudeep Thakuri; Dr. Dibas Shrestha | Ongoing |
| 16 | Mr. Govinda Sharma | Effects of air pollution on apiculture in Thimphu district, Bhutan. Supervisor/Co-supervisor: Prof. Dr. Rejina Maskey Byanju; Dr. Tulsi Gurung | Ongoing |
| 17 | Mr. Jaya Ram Khaiju | Hydrological dynamics and water stress in hilly regions of Nepal using geospatial techniques and modelling. Supervisor: Dr. Sudeep Thakuri | Ongoing |
| 18 | Mr. Tapil Prakash Rai | Distribution, conservation and management of endangered testudines to foster survivability from lowland region in Southeast-Nepal. Supervisor/Co-supervisors: Prof. Dr. Udhab Raj Khadka; Prof. Dr. Hermann Schleich; Prof. Dr. Kaluram Khambu Rai | Ongoing |
| 19 | Mr. Youb Raj Bhatta | Road safety in Nepal: effective interventions in reducing road traffic accidents and environmental pollution. Supervisor/Co-supervisor: Prof. Dr. Kedar Rijal; Dr. Ramesh Raj Pant | Ongoing |
| 20 | Mr. Rakesh Kumar Yadav | Effectiveness of fish ladders for Migratory fish in Nepal as a Mitigation of Hydropower Impacts on Aquatic Biodiversity. Supervisor/Co-supervisor: Dr. Deep Narayan Shah; Prof. Dr. Roshan Man Bajracharya | Ongoing |
| 21 | Ms. Hasana Shrestha | Use of ow cast sensor coupled with remote sensing for PM2.5 estimation in the urban centers of Nepal. Supervisor: Prof. Dr. Rejina Maskey Byanju | Ongoing |
| 22 | Mr. Indu Bikram Joshi | Study on antibiotic residue and antibiotic resistance bacteria in fecal sludge, pharmaceutical industries effluent, hospital sewage, common treatment plant. Supervisor: Prof. Dr. Rejina Maskey Byanju | Ongoing |
| 23 | Ms. Shakti Gurung | Ecosystem and community resilience towards climate-induced disasters in Annapurna Conservation Area Region, Gandaki Province, Nepal. Supervisor: Prof. Dr. Udhab Raj Khadka | Ongoing |
| 24 | Mr. Prakash Timilsina | Disturbance and restoration in adjoining forests of lowland protected areas in Nepal. Supervisor/Co-supervisor: Prof. Dr. Chhatra Mani Sharma; Dr. Ramesh Prasad Sapkota | Ongoing |
| 25 | Ms. Prativa Kaspal | Habitat resilience and conservation threats to pangolin (Manis spp.) in Nepal. Supervisor/Co-supervisor: Dr. Sudeep Thakuri; Dr. Narayan Prasad Koju | Ongoing |
| 26 | Ms. Sabina Thapa Raut | Plant diversity and productivity in relation to soil quality in forest systems in mid-hills of Nepal. Supervisor: Dr. Ramesh Prasad Sapkota | Ongoing |
| 27 | Ms. Mangaleswori Dhonju | Urban water pollution and assessment tool development: A case study of the Sirsiya River. Supervisor/Co-supervisor: Prof. Dr Rejina Maskey Byanju; Dr. Deep Narayan Shah | Ongoing |
| 28 | Mr. Subash Duwadi | Cascading hydrological hazards in the Himalayan range: A case study from Melamchi Watershed in central Nepal. Supervisor/Co-supervisor: Prof. Dr. Danda Pani Adhikari; Prof. Dr. Megh Raj Dhital | Ongoing |
| 29 | Ms. Samjhana Kawan | Responses of large wading bird to habitat quality and complexity of farmland of Lumbini, Nepal. Supervisor/Co-supervisor: Dr. Ramesh Prasad Sapkota; Dr. Deep Narayan Shah | Ongoing |
| 30 | Mr. Dhan Bahadur Tamang | Study on environmental policies of Nepal in the perspectives of environmental pollution. Supervisor/Co-supervisor: Dr. Indira Parajuli; Prof. Dr. Kedar Rijal | Ongoing |
| 31 | Ms. Smrity Bhattarai | Ecosystem services and impact of anthropogenic activities along the Kankai Mai River of Eastern Nepal. Supervisor: Prof. Dr. Udhab Raj Khadka | Ongoing |
| 32 | Mr. Tirtha Raj Panthi | Climate change impacts on major cereal crops production in Sudur- Paschim Province Nepal. Supervisor: Prof. Dr. Kedar Rijal | Ongoing |