Crop suitability modeling for rice under future climate scenario in Bhutan

Ngawang Chhogyel, Mahesh Ghimiray and Kiran Subedi 


A crop suitability modeling for rice under the current and projected future climate (2050) under two global emission scenarios (RCP4.5 and RCP 8.5) was done using EcoCrop model. The objectives of the study are (1) to assess suitability of rice under the current climatic condition (2) develop crop suitability model for rice under future projected climate, and (3) analyze loss and gain in areas under changing climatic condition to help plan for rice research and development. The model shows that the crop suitability is changing under projected future scenario and the changes in suitability is going to have major effect on rice production in the country. One of the major findings of the study was that, Bhutan could gain in suitability and thus, has opportunity for more initiatives for rice commodity. The gain in area under projected future climate would contribute to rice self sufficiency, thus, calling for enhanced investment in the 12th five year plan and beyond.


Climate; Crop modeling; Crop suitability; Rice




CDDE and UNDP. 2013. Making Sense of Climate Finance. Linking public finance and national climate change policy in the Asia-Pacific region.

Chhogyel N and Bajgai Y. 2015. Modern rice varieties adoption rate to raise productivity: A case study of two districts in Bhutan. SAARC Journal of Agriculture, 13(2):34-49. doi: 10.3329/sja.v13i2.26567.

DoA (Department of Agriculture). 2016. Agriculture Statistics 2016. Department of Agriculture, Ministry of Agriculture and Forests. 88p

GRiSP (Global Rice Science Partnership). 2013. Rice almanac, 4th edition. Los Baños (Philippines): International Rice Research Institute. 283 p.

Gujja B and Thiyagarajan T.M. 2010. Producing more with less: exploring farm-based approaches to improve productivity and providing options to farmers in adapting to climate change. In: Wassmann R, editor, Advanced technologies of rice production for coping with climate change: ‗no regret‘ options for adaptation and mitigation and their potential uptake. Proceedings of the Workshop Advanced Technologies of Rice Production for Coping with Climate Change: ‗No Regret‘ Options for Adaptation and Mitigation and their Potential Uptake held on 23-25 June 2010 in Los Baños, Philippines. IRRI Limited Proceedings No. 16. Los Baños (Philippines): International Rice Research Institute. 81 p.

International Rice Research Institute (IRRI). 2016. Leading Innovations, Annual Report 2016. Los Banos, Philippines. International Rice Research Institute, 40p.

IPCC (International governmental panel for climate change). 2002, Group II working Report on Climatic Variability. Contribution of working Group II to the Third Assessment of the Intergovernmental Panel on Climate Change.

IPCC. 2007a. IPCC Fourth Assessment Report (AR4). Comprises the AR4 Synthesis Report (online at; Working Group I Report ‗The Physical Science Basis (online at ar4-wg1.htm); Working Group II Report ‗Impacts, Adaptation and Vulnerability‘(online at; and Working Group III Report ‗Mitigation of Climate Change‘ (online at

IPCC. 2013. Climate Change 2013: The Physical Science Basis – Summary for Policymakers, NSSC (National Soil Service Centre) and PPD (Policy and Planning Division). 2011. Bhutan Land Cover Assessment 2010, Technical report. Ministry of Agriculture and Forests.

Parker L, Guerten N, Thi Nguyen T, Rinzin C, Tashi D, Wangchuk D, Bajgai Y, Subedi K, Phuntsho L, Thinley N, Chhogyel N, Gyalmo T, Katwal TB, Zangpo T, Acharya S, Pradhan S, Penjor S. 2017. Climate change impacts in Bhutan: challenges and opportunities for the agricultural sector. Working Paper No. 191. CGIAR Research

Program on Climate Change, Agriculture and Food Security (CCAFS). Wageningen, The Netherlands.70p

Yoshida S. 1981. Fundamentals of rice crop science. International rice Research Institute publication, Los Banos, Philippines, 277p.