This review has mainly focused on China and Bangladesh, as taken in some parts of comparison due to climate changes (CC) affected the country. The study implicated a range of socioeconomic and agro-economic literature that was developed subsequent two different development trail linked with the Intergovernmental Panel on Climate Change (IPCC) pessimistic and optimistic scenarios. The food security index (FSI) has proven to be a powerful and reliable quantitative cause-effect analysis tool. Analysis of the literature results compared with other factors such as agricultural land area, population growth and GDP growth, showed that CC has only a modest positive impact on food security. Overall, socio-economic development pathways have a major impact on future food security trends in China and Bangladesh. Furthermore, emphasis on environmental sustainability, the impartial expansion path associated with the pessimistic emissions scenario, has proven to be far better in ensuring food safety than the other optimistic path. In regression analyzed literature, it was found that yield growth rate was a much better indicator in food security analysis than crop yield per season. Therefore, the yield enhancements on a yearly basis are highly consequence in ensuring food security for the countries with a big sized and densely populated region like China and Bangladesh. The comparatively lower FSI, values recommended that per capita food consumption in China is on a stable growth while Bangladesh would face deficiencies. Therefore, there is a need to focus more on food safety and balanced nutrition, taking into account climatic conditions. The review information derived from the study is similarly suitable for formulating climate change and agricultural relevant planning and policies.
 Hossain, M.N., Saifullah, A.S.M., Bhuiyan, S., Uddin, N., Rahman, M., 2019. Effects of climate change on rice production at Khulna district, Bangladesh, Environ. Earth Ecol. 3(1). pp 42–54. DOI: https://doi.org/10.24051/eee/110398
 IPCC. Climate Change 2013: The physical science basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK, 2013, pp. 33–115.
 Hansen, J., Sato, M., Ruedy, R., Lo, K., Lea, D.W., Medina-Elizade, M., 2006. Global temperature change, Proc Natl Acad Sci USA. 103. pp 14288–14293.
 Kotir, J.H., 2011. Climate change and variability in Sub-Saharan Africa: a review of current and future trends and impacts on agriculture and food security, Environ Dev Sustain. 13. pp 587-605. DOI: https://doi.org/10.1007/s10668-010-9278-0
 Godfray, H.C.J., Pretty, J., Thomas, S.M., Warham, E.J., Beddington, J.R., 2011. Linking policy on climate and food, Sciencexpress. 331. pp 1013–1014.
 Islam, S., Ma, M., 2018. Geospatial monitoring of land surface temperature effects on vegetation dynamics in the Southeastern Region of Bangladesh from 2001 to 2016, ISPRS International Journal of Geo-Information. 7(12). pp 486. DOI: https://doi.org/10.3390/ijgi7120486
 Yuji, M., Kiyoshi, T., Hideo, H., Yuzuru, M., 2009. Impact assessment of climate change on rice production in Asia in comprehensive consideration of process/parameter uncertainty in general circulation models, Journal of Agriculture, Ecosystems, and Environment. 131. pp 281-291. DOI: https://doi.org/10.1016/j.agee.2009.02.004
 IPCC. Climate Change: Impacts, Adaptation, and Vulnerability. In Contribution of Working Group II to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Cambridge University Press, Cambridge, UK, 2007.
 Z. Karim, S.G. Hussain, A.U. Ahmed, Climate Change Vulnerability of Crop Agriculture, in: S. Huq, Z. Karim, M Asaduzzaman, F Mahtab, (Eds.), Vulnerability and Adaptation to Climate Change for Bangladesh, Springer, Dordrecht, 1999. DOI: https://doi.org/10.1007/978-94-015-9325-0_4
 The World Bank. Bangladesh: Climate Change and Sustainable Development. Report No. 21104-BD. Rural Development Unit, South Asia Region, The World Bank, Dhaka, Bangladesh, 2000, pp. 95.
 Steltzer, H., Post, E., 2009. Seasons and life cycles, Science. 324. pp 886–887. DOI: https://doi.org/10.1126/science.1171542
 Lobell, D.B., Burke, M.B., Tebaldi, C., Mastrandrea, M.D., Falcon, W.P., Naylor, R.L., 2008. Prioritizing climate change adaptation needs for food security in 2030, Science. 319. pp 607-610. DOI: https://doi.org/10.1126/science.1152339
 Schmidhuber, J., Tubiello, F.N., 2007. Global food security under climate change, Proc Natl Acad Sci U.S.A. 104. pp 19703–19708. DOI: https://doi.org/10.1073pnas.0701976104
 Turral, H., Faures, J.B.M. Climate change, water, and food security. FAO Water Reports 36, Food and Agricultural Organization, UN, Rome, Italy, 2011.
 Lin, E., Xiong, W., Ju, H., Xu, Y., Li, Y., Bai, L., Xie, L., 2005. Climate change impacts on crop yield and quality with CO2 fertilization in China, Phil Trans R Soc B. 360. pp 2149–2154. DOI: https://doi.org/10.1098/rstb.2005.1743
 Piao, S., Ciais, P., Huang, Y., Shen, Z., Peng, S., Li, J., Zhou, L., Liu, H., Ma, Y., Ding, Y., Friedlingstein, P., Liu, C., Tan, K., Yu, Y., Zhang, T., Fang, J., 2010. The impacts of climate change on water resources and agriculture in China, Nature. 467. pp 43–51. DOI: https://doi.org/10.1038/nature09364
 Tubiello, F.N., Soussana, J.F., Howden, S.M., 2007. Crop and pasture response to climate change, Proc Natl Acad Sci USA. 104. pp 19686-19690. DOI: https://doi.org/10.1073pnas.0701728104
 Islam, S., Zhang, M., Yang, H., Ma, M., 2019. Assessing inconsistency in global land cover products and synthesis of studies on land use and land cover dynamics from 2001 to 2017 in the southeastern region of Bangladesh, Journal of Applied Remote Sensing. 13(4). pp 048501. DOI: https://doi.org/10.1117/1.JRS.13.048501
 Walsh, B.M., Foster, J.C., Erickson, P.J., Sibeck, D.G., 2014. Simultaneous ground- and space-based observations of the plasmaspheric plume and reconnection, Science. 343. pp 1122-1125. DOI: https://doi.org/10.1126/science.1247212
 Sikder, R., Xiaoying, J., 2014. Climate change impact and agriculture of Bangladesh, Journal of Environment and Earth Science. 4(1). pp 35-40.
 Mainuddin, K., Rahman, A., Islam, N., Quasem, S. Planning and costing agriculture's adaptation to climate change in the salinity-prone cropping system of Bangladesh. International Institute for Environment and Development (IIED), London, UK, 2011.
 UN. World Urbanization Prospects: The 2015 Revision. United Nations Department of Economic and Social Affairs, Population Division, New York, U.S.A, 2015.
 Ninno, C.D., Dorosh, P.A., Subbarao, K. Food aid and food security in the short- and long run: Country Experience from Asia and sub-Saharan Africa. Special protection, The World Bank Institution, 2005.
 Zheng, T., Zhu, J., Wang, S., Fang, J., 2016. When will China achieve its carbon emission peak?, Natl Sci Rev. 3. pp 8-15. DOI: https://doi.org/10.1093/nsr/nwv079
 The World Bank. IBRD IDA Open Data. The World Bank Group, 2020. https://data.worldbank.org/country/
 Tao, S., Fang, J., Zhao, X., Zhao, S., Shen, H., Hu, H., Tang, Z., Wang, Z. and Guo, Q., 2015. Rapid loss of lakes on the Mongolian Plateau, Proc Natl Acad Sci U.S.A. 112. pp 2281-2286. DOI: https://doi.org/10.1073/pnas.1411748112
 Guo, J.H., Liu, X.J., Zhang, Y., Shen, L.J., Han, W.X., Zhang, W.F., Christie, P., Goulding, K.W.T., Vitousek, P.M., Zhang, F.S., 2010. Significant acidification in major Chinese croplands, Science-AAAS. 327(5968). pp 1008-1010. DOI: https://doi.org/10.1126%2Fscience.1182570
 Fang, J., Shen, Z., Tang, Z., Wang, X., Wang, Z., Feng, J., Liu, Y., Qiao, X., Wu, X., Zheng, C., 2012. Forest community survey and the structural characteristics of forests in China, Ecography. 35. pp 1059–1071. DOI: https://doi.org/10.1111/j.1600-0587.2013.00161.x
 Wang, S., Wang, Z., Piao, S., 2010. Regional differences in the timing of recent air warming during the past four decades in China, Chin. Sci. Bull. 55. pp 1968-1973. DOI: https://doi.org/10.1007/s11434-010-3236-y
 Lal, R., 2004. Offsetting china's CO2 emissions by soil carbon sequestration, Climatic Change. 65. pp 263–275. http://www.tinread.usarb.md:8888/jspui/bitstream/123456789/1098/1/offsetting.pdf [accessed 18.04.2020]
 Piao, S., Fang, J., Ciais, P., Peylin, P., Huang, Y., Sitch, S., Wang, T., 2009. The carbon balance of terrestrial ecosystems in China, Nature. 458. pp 1009-1013. DOI: https://doi.org/10.1038/nature07944
 Wen, J.B. Build consensus and strengthen cooperation to advance the historical process of combating climate change. Speech at the Copenhagen Climate Change Summit 18 December 2009, Copenhagen, 2009. www.fmprc.gov.cn/mfa_eng/wjdt_665385/zyjh_665391/t647091.shtml [accessed 22.01.2020]
 Hu, H., Wang, S., Guo, Z., 2015. The stage-classified matrix models project a significant increase in biomass carbon stocks in China's forests between 2005 and 2050, Sci Rep. 5. pp 11203. DOI: https://doi.org/10.1038/srep11203
 Wu, B.F. Land Cover Atlas of the People's Republic of China (1:1 000 000). China Map Publishing House, Beijing, China, 2017. [In Chinese]
 Tang, X., Zhao, X.B., Tang, Y., Wang, Z., Zhao, W., Wan, Y., Xie, H., Shi, Z., Wu, X., Wang, B., Yan, G., Ma, J., Du, K., et al. 2018. Carbon pools in China's terrestrial ecosystems: New estimates based on an intensive field survey, Proc Natl Acad Sci U.S.A. 115. pp 4021–4026. DOI: https://doi.org/10.1073/pnas.1700291115
 National Development and Reform Commission. Enhanced Actions on Climate Change: China's Intended Nationally Determined Contributions. Department of Climate Change, People's Republic of China, 2015. http://www4.unfccc.int/submissions/INDC/Published%20Documents/China/1/China's20INDC%20-%20on%2030%20June%202015.pdf [accessed 12.03.2020]
 Hossain, M.N., Rahman, M.M., Islam, K., 2016. Vulnerability of Agricultural Production due to Natural Disaster at Mongla Upazila (Sub-district) in Bangladesh, British Journal of Applied Science & Technology. 16(1). pp 1-13. DOI: https://doi.org/10.9734/BJAST/2016/26007
 Salehin, F., Hossain, M.N., Nayeem, A.R., Hassan, M.R., 2020. The Role of the Constitution in Effective Disaster Management of Bangladesh, Grassroots Journal of Natural Resources. 3(2). pp 57-69. DOI: https://doi.org/10.33002/nr2581.6853.03025
 Islam, S., Rahman, M.M., Paul, A., 2014. Coping with urban coastal disasters in inadequate urban facilities: A case study at Chittagong city coastal belt, Bangladesh, Global Perspectives on Geography. 2. pp 9-15.
 Ghosh, D.K., Hossain, M.N., Sarker, M.N.I., Islam, S., 2020. Effects of land-use changes pattern on tree plantation: Evidence from gher land in Bangladesh, Int. J. Agric Pol. Res. 8(3). pp 55-65. DOI: https://doi.org/10.15739/IJAPR.20.007
 Ganguli, S., Islam, S., Garai, J., 2018. Physico-chemical assessment of water bodies and socioeconomic analysis from the coastal belt of Chittagong, Indonesian Journal of Environmental Management and Sustainability. 2(4). pp 107-117. DOI: https://doi.org/10.26554/ijems.2018.2.4.107-117
 BBS. Statistical Year Book of Bangladesh. Bangladesh Bureau of Statistics, Dhaka, Bangladesh, 2002.
 Mistri, N.A., Rahman, M., Khatun, T., 2015. Climate Change and Food Security at Salinity Prone Area in Southwest Coastal Region of Bangladesh, International Journal of Environmental Protection and Policy. 3(2-1). pp 35-39. DOI: https://doi.org/10.11648/j.ijepp.s.2015030201.16
 A.U. Ahmed, , M. Alam, Development of Climate Change Scenarios with General Circulation Models, in: S. Huq, Z. Karim, M. Asaduzzaman, F. Mahtab (Eds.), Vulnerability and Adaptation to Climate Change for Bangladesh. Springer, Dordrecht, 1999, pp. 13-20. DOI: https://doi.org/10.1007/978-94-015-9325-0_2
 Hossain, M.N., Uddin, M.N., Rokanuzzaman, M., Miah, M.A., Alauddin, M., 2015. Effects of Flooding on Socioeconomic Status of Two Integrated Char Lands of Jamuna River, Bangladesh, Journal of Environmental Science and Natural Resources. 6(2). pp 37-41. DOI: https://doi.org/10.3329/jesnr.v6i2.22093
 Al-Masud, A., Liza, A., Azad, A., 2014. The vulnerability of crop production to climatic variability in a water stress area of the north-west region of Bangladesh: a case study in the Sapahar Upazila under Naogaon District, J. Environ. Sci. Toxicol. Food Technol. 8(5). pp 41-52.
 Sarker, M.A.R., Alam, K., Gow, J., 2012. Exploring the Relationship between Climate Change and Rice Yield in Bangladesh: An Analysis of Time Series Data, Agric. Sys. 112. pp 11–16. DOI: https://doi.org/10.1016/j.agsy.2012.06.004
 Rahman, M.W., Parvin, L., 2009. Impact of Irrigation on Food Security in Bangladesh for the Past Three Decades, Journal of Water Resource and Protection. 3. pp 216-225. https://papers.ssrn.com/sol3/papers.cfm?abstract_id=1587955 [accessed 10.03.2020]
 Ayers J. Understanding the adaptation paradox: Can global climate change adaptation policy be locally inclusive, The London School of Economics and Political Science, 2010. https://www.researchgate.net/publication/277153554_Understanding_the_Adaptation_Paradox_Can_Global_Climate_Change_Adaptation_Policy_be_Locally_Inclusive
 David. Climate change 2007: Mitigation. Contribution of working group III to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC), 2007.
 Hossain, M.F., Islam, M.S., Rahman, M.M., Faruk, M.O., Ershad, M.G., 2008. Yield and quality performance of some aromatic rice varieties of Bangladesh, J. Agro. For Environ. 2(2). pp 155-158.
 FAO. Policy Brief. Food and Agriculture Organization of the United Nations, Economic and Social Development Department, Rome, Italy, 1996.
 Ye, L., Xiong, W., Li, Z., Yang, P., Wu, W., Yang, G., Fu, Y., Zou, J., Chen, Z., Ranst, E.V., Tang, H., 2013. Climate change impacts China's food security in 2050, Agron. Sustain. Dev. 33. pp 363-374. DOI: https://doi.org/10.1007/s13593-012-0102-0
 Lobell, D.B., Field, C.B., 2008. Estimation of the carbon dioxide (CO2) fertilization effect using growth rate anomalies of CO2 and crop yields since 1961, Glob Chang Biol. 14. pp 39-45. DOI: https://doi.org/10.1111/j.1365-2486.2007.01476.x
 Jones, J.W., Hoogenboom, G., Porter, C.H., Boote, K.J., Batchelor, W.D., Hunt, L.A., Wilkens, P.W., Singh, U., Gijsman, A.J., Ritchie, J.T., 2003. The DSSAT cropping system model, Eur J Agron. 18. pp 235–265. DOI: https://doi.org/10.1016/S1161-0301(02)00107-7
 Portmann, F.T., Siebert, S., Döll, P., 2010. MIRCA2000 global monthly irrigated and rainfed crop areas around the year 2000: a new high-resolution data set for agricultural and hydrological modelling, Glob Biogeochem Cycles. 24. pp GB1011. DOI: https://doi.org/10.1029/2008GB003435
 Xu, Y.L., Zhang, Y., Lin, E.D., Wan, T., Dong, W.J., Jones, R., Hassell, D., Wilson, S., 2006. Analyses on the climate change responses over China under SRES B2 scenario using PRECIS, Chin Sci Bull. 51. pp 2260–2267. DOI: https://doi.org/10.1007/s11434-006-2099-8
 Lu, F., hu, H., Sun, W., Zhu, J., Liu, G., Zhou, W., Zhang, Q., Shi, P., Liu, X., Wu, X., Zhang, l., Wei, X., Dai, L., Zhang, K., Sun, Y., Xue, S., Zhang, W., Xiong, D., Deng, L., Yu, G., 2018. Effects of national ecological restoration projects on carbon sequestration in China from 2001 to 2010, Proceedings of the National Academy of Sciences. 115. pp 4039-4044. DOI: https://doi.org/10.1073/pnas.1700294115
 Fang, J., Yu, G., Liu, L., Hu, S., Chapin, S.F., 2018. Climate change, human impacts, and carbon sequestration in China, PNAS. 115(16). pp 4015-4020. DOI: https://doi.org/10.1073/pnas.1700304115
 Tang, Z., Xu, W., Zhou, G., Bai, Y., Li, J., Tang, X., Chen, D., Liu, Q., Ma, W., Xiong, G., He, H., He, N., Guo, Y., Guo, Q., Zhu, J., Han, W., Hu, H., Fang, J., Xie, Z., 2018. Patterns of plant carbon, nitrogen, and phosphorus concentration in relation to productivity in China's terrestrial ecosystems, PNAS. 115 (16). pp 4033-4038. DOI: https://doi.org/10.1073/pnas.1700295114
 NOARP (National Office of Agricultural Regional Planning). China agricultural resource planning and development strategies. Meteorological Press, Beijing, 1997. [In Chinese]
 Mirza, M.M.Q., 2011. Climate change, flooding in South Asia, and implications, Reg Environ Change. 11. pp 95–107. DOI: https://doi.org/10.1007/s10113-010-0184-7
 BARC. Crop Suitability Map and Data. Bangladesh Agricultural Research Council, Ministry of Agriculture, Government People's Republic of Bangladesh, 2020. http://cropzoning.barcapps.gov.bd/homes/downloads/1 [accessed 15.05.2020]
 Liu, J., 2013. Forest sustainability in China and implications for a telecoupled world, Asia & the Pacific Policy Studies. 1(1). pp 230-250. DOI: https://doi.org/10.1002/app5.17
 Hussain, S.G., Chowdhury, M.K.A., Chowdhury, M.A.H. Land Suitability Assessment and Crop Zoning of Bangladesh, Bangladesh Agricultural Research Council, Dhaka, Bangladesh, 2012.
 Alston, J.M., Beddow, J.M., Pardey, P.G., 2009. Agricultural research, productivity, and food prices in the long run, Science. 325. pp 1209-1210. DOI: https://doi.org/10.1126/science.1170451
 Challinor, A.J., Wheeler, T., Hemming, D., Upadhyaya, H.D., 2009. Ensemble yield simulations: crop and climate uncertainties, sensitivity to temperature, and genotypic adaptation to climate change, Clim. Res. 38. pp 117-127. DOI: https://doi.org/10.3354/cr00779
 Gosling, S.N., Warren, R., Arnell, N.W., Good, P., Caesar, J., Bernie, D., Lowe, J.A., van der Linden, P., O'Hanley, J.R., Smith, S.M., 2011. A review of recent developments in climate change science Part II: the global-scale impacts of climate change, Progr Phys Geogr. 35. pp 443-464. DOI: https://doi.org/10.1177/0309133311407650
 Rotter, R.P., Carter, T.R., Olesen, J.E., Porter, J.R., 2011. Crop–climate models, need an overhaul, Nature Climate Change. 1. pp 175-177. DOI: https://doi.org/10.1038/nclimate1152
 Zeng, Q., An, S., Liu, Y., Wang, H., Wang, Y., 2019. Biogeography and the driving factors affecting forest soil bacteria in an arid area, Science of the Total Environment. 680. pp 124-131. DOI: https://doi.org/10.1016/j.scitotenv.2019.04.184
 Challinor, A.J., Simelton, E.S., Fraser, E.D.G., Hemming, D., Collins, M., 2010. Increased crop failure due to climate change: assessing adaptation options using models and socioeconomic data for wheat in China, Environ Res Lett. 5. pp 034012. DOI: https://doi.org/10.1088/1748-9326/5/3/034012
 Long, S.P., 2012. Virtual Special Issue on food security greater than anticipated impacts of near-term global atmospheric change on rice and wheat, Glob Chang Biol. 18. pp 1489-1490. DOI: https://doi.org/10.1111/j.1365-2486.2012.02676.x
 Molden, D., Sakthivadivel, R., 1999. Water accounting to assess the use and productivity of water, Int J Water Resour Dev. 15. pp 55-71. DOI: https://doi.org/10.1080/07900629948934
 Jin, J., 2011. Changes in the efficiency of fertilizer use in China, J Sci Food Agric. 92. pp 1002–1009. DOI: https://doi.org/10.1002/jsfa.4700
 Zhang, L., Wang, G., Zheng, Q., Liu, Y., Yu, D., Shi, X., Xing, S., Chen, H., Fan, X., 2017. Quantifying the impacts of agricultural management and climate change on soil organic carbon changes in the uplands of Eastern China, Soil & Tillage Research. 174. pp 81-91. DOI: https://doi.org/10.1016/j.still.2017.06.005