Description : This text quantifies the impact of climate change on rice production using crop simulation models, and integrates existing knowledge of the effects of increased levels of carbon dioxide and temperature
Description : Issues of global climate change; Emission of greenhouse gases; Ultraviolet-B radiation; Carbon dioxide and temperature; Simulation modeling.
Description : An agro-climatic study was conducted to assess the vulnerability of winter rice (boro) production in Bangladesh to potential climate change. Effect of climate change on yield of two varieties of boro rice has been assessed using the DSSAT (v4) modeling system. The yield of BR3 and BR14 boro varieties for the years 2008, 2030, 2050 and 2070 have been simulated for 12 locations of Bangladesh, which were selected from among the major rice growing areas in different regions of Bangladesh. Available data on soil and hydrologic characteristics of these locations, and typical crop management practice for boro rice were used in the simulations. The weather data required for the model (daily maximum and minimum temperatures, daily solar radiation and daily precipitation) were generated for the selected years and for the selected locations using the regional climate model PRECIS. The model predicted significant reduction in yield of both varieties of boro rice due to climate change; yield reductions of over 20% and 50% have been predicted for both rice varieties for the years 2050 and 2070, respectively.
Description : Weather related disasters like occurrence of floods, droughts, heat wave and cold waves is not uncommon across the Country. It is true world over. Increase in sea surface temperature and sea level has potential impact on monsoon uncertainties, water resources, shift in coastal population and marine products. Vulnerability to extreme weather events is higher than vulnerability to changing average climatic conditions. The society linked sectors like agriculture, biodiversity, fisheries, forestry, water resources, human and animal health and infrastructure are the worst sufferers in the event of weather uncertainties. As a result it is realized that food security is under threat due to global warming. The book deals with climate change impacts and adaptation strategies in agriculture, horticulture, plantation crops in the humid tropics, livestock, fisheries, forestry, water resources and biodiversity. The invited and research papers, included in the book, provide clues for developing adaptation and mitigation strategies in coping up with the expected climate change in future. Although global foodgrains production is likely to increase in tune with rising population and demand in ensuing decades, it may suffer unless new approaches to adapt crop plants to climate change are adopted. Therefore, “Research and education policy in climate change adaptation and mitigation is the need of the hour to address the climate issues in various sectors as the frequency of occurrence of floods and droughts, cold and heat waves are likely to increase under projected climate change scenarios and a threat to food security.
Description : Climate change is directly linked to the human activities, according to the Fourth Assessment Report of IPCC (2007). In last two decades of 20th Century, accelerated anthropogenic activities pushed up the atmospheric abundance of greenhouse gases, mainly CO2, CH4, and N2O, alarmingly which enhanced the radiative forcing of the Earth’s surface and thus perturbed its heat radiation balance. As a consequence, atmospheric characteristics, such as temperature, rainfall pattern, levels of CO2 and O3 have changed significantly, affecting the farm productivity. Although rising level of CO2 may have fertilizing effect on C3 crops, but concomitant rise in atmospheric temperature, O3 level and extreme weather conditions can not only nullify the fertilizing effect of CO2, but also drastically reduce the crop production, threatening food security to burgeoning world population. Agricultural crops are not only victim of climate variability and extreme whether conditions, but also serve as a potential source of CH4 and N2O. Therefore, in changed scenario, Kyoto Protocol (1997) has sought all signatory developed nations to cut down their emission levels as per their differential commitments to UNFCCC and developing nations to invest in less carbon emission projects to avert the process of global warming process. In this context, the present edition, which compiles latest findings of studies carried out by the scientists on climate change and crops around the world, serves as a ready reckoner to crop scientists, atmospheric scientists, ecologists, environmentalists, research scholars and post- graduate students to update their knowledge and understanding on this issue.