Impact Of Climate Change On Water Resources In Agriculture

Climate change and its impact on water resources in agriculture pose one of the biggest challenges for food, energy, fiber, and water security worldwide and, as a consequence, for society. This book presents a multidisciplinary approach towards climate change and water resources in agriculture and provides a comprehensive perspective about the core

Climate change and its impact on water resources in agriculture pose one of the biggest challenges for food, energy, fiber, and water security worldwide and, as a consequence, for society. This book presents a multidisciplinary approach towards climate change and water resources in agriculture and provides a comprehensive perspective about the core points central to this subject. Other topics that are covered in this book include important insights concerning hydrological cycle, forests, land use change and water, low carbon agriculture, green economy concepts, as well as the state of the art on United Nations Framework Convention on Climate Change and Global Research Alliance are provided.

- Water resources management should be assessed under climate change conditions, as historic data cannot replicate future climatic conditions. - Climate change impacts on water resources are bound to affect all water uses, i.e., irrigated agriculture, domestic and industrial water supply, hydropower generation, and environmental flow (of streams and rivers) and water level (of lakes). - Bottom-up approaches, i.e., the forcing of hydrologic simulation models with climate change models’ outputs, are the most common engineering practices and considered as climate-resilient water management approaches. - Hydrologic simulations forced by climate change scenarios derived from regional climate models (RCMs) can provide accurate assessments of the future water regime at basin scales. - Irrigated agriculture requires special attention as it is the principal water consumer and alterations of both precipitation and temperature patterns will directly affect agriculture yields and incomes. - Integrated water resources management (IWRM) requires multidisciplinary and interdisciplinary approaches, with climate change to be an emerging cornerstone in the IWRM concept.

This paper summarizes the methods and findings of the hydrological assessment component of the project studying likely impacts of climate change on water resources and agriculture in Africa. The first phase of the study used a version of a conceptual rainfall-runoff model called WatBal (Water Balance) applied to gridded data to simulate changes in soil moisture and runoff across the whole continent of Africa rather than to any particular catchment or water resource system. The model inputs were the climate variables of the 1961-90 climatology and physiological parameters (such as soil properties and land use) derived from global datasets for each of the 0.5 degree latitude/longitude cells across the continent. The primary model output comprised a time series (monthly time step) of simulated runoff for all the grid cells for each of the districts in the countries of interest. The second phase of the study extended the hydrology analyses to update the above hydroclimatic series to the year 2000 using updated input data. To ascertain the possible impacts of climate change within the districts being investigated this study used synthetic or GCM-based climate change scenarios as input to the WatBal model. The WatBal model was used to determine the impact of these different scenarios on runoff and actual evaporation and hence flow in the districts under study. The generated hydroclimatic series and scenario analyses were used as inputs into various Ricardian regressions in other analyses measuring likely impacts of climate change on the agricultural economies of Africa.

This book gathers contributions discussing climate change in Egypt from an agricultural perspective. Written by leading experts, it presents state-of-the-art insights and the latest research developments in light of the most recent IPCC report. Focusing on identifying the specific phenomena that affect climate change in Egypt, the book also addresses the effects of climate change in Egypt, particularly examining the quality and quantity of water resources as well as the socio-economic impacts of climate change on agricultural activities. Furthermore, it explores alternative solutions to support agriculture and food security and raises awareness of adaptation and protection as the key to adapting to the risks posed by climate change. Covering the four fundamental pillars of climate change: food security, availability, access and stability, this book is a valuable resource for stakeholders involved in achieving the 2030 sustainable development goals in Egypt and all countries with similar climatic conditions. It is also a unique source of information and updates on climate change impacts for graduates, researchers, policy planners, and decision-makers.

The book provides an analysis of impacts of climate change on water for agriculture, and the adaptation strategies in water management to deal with these impacts. Chapters include an assessment at global level, with details on impacts in various countries. Adaptation measures including groundwater management, water storage, small and large scale irrigation to support agriculture and aquaculture are presented. Agricultural implications of sea level rise, as a subsequent impact of climate change, are also examined.

This book is based on the outcomes of a Turkish-Japanese bilateral project dealing with the impacts of climate change on basin agro-ecosystems. The book is unique in showing an up-to-date knowledge for the developing world. The chapters are related to: a) the development and improvement of a regional climate model for a more accurate prediction with higher resolution of future changes in regional climate, b) the structure of land and water management in agricultural production systems in arid areas, especially to quantitatively evaluate the relationships among cropping systems, hydrological cycle and water balance in farmland and its environments, c) the assessment of the impact of climate change and its adaptation on agricultural production systems, mainly on the aspect of land and water management, and d) the vulnerability of agricultural production systems from natural changes and the measures for enhancing sustainability of agriculture. This book elaborates on the methodologies for the assessment of climate change impacts on agricultural production and adaptationIn this book, the concepts and processes of an integrated approach are outlined, and its application in a case project is introducedThe approaches described in the chapters would be applicable in different situations and could be improved with experience and the introduction of advanced techniques