Chapter 3
Literature Review
Introduction
This literature review seeks to highlight some of the effects that the change in climate has on small-scale farmers along with the strategies that they have employed to mitigate these impacts.
Overview of the Global context in the change of Climate
The change in climate refers to the alteration in the condition of climate that is easily identifiable through the use of statistical tests through alterations in variability and/or mean of its properties and exists for a much longer period, in most cases decades It can also be described as change in climate that takes place over time, whether it is as a result of human activity or natural variability. For instance, in (1995-2006) the eleven years were
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The process of systematic observations of climate is normally carried out in national centres of metrology and other specialized centres. The observations are taken at standard pre-set places and time and monitor terrestrial, atmosphere and ocean systems. The variables of the major climate include; tropical cyclones, temperature, temperature of the sea surface, rise in sea level, tropical cyclones and wind speeds. A report by GCM suggests that the mean annual temperature for Jamaica will increase from 1.1 to 3.2 degrees by 2090. The report also suggests that the increase in range is 1.0 to 3.0 by 2080 and 0.7 to 1.8 by 2050. Likewise, the range in the projected rainfall by 2050 will be -44% to + 18% and -55% to +18% by 2080. The September / November rainfall (late wet season) and July/August (early wet season) have impacted strongly on the general yearly rainfall. The rainfall extreme projections are mixed across the joint. The range of changes by 2080 will be between -19 and +20 for rainfall proportion falling during heavy events and -29mm to +25 in a five day maximum rainfall .
Precipitation patterns and temperature alterations will lead to decrease in crop produce in most sub-tropical and tropical regions thus impacting negatively on sectors of Agriculture . Consequently, its effect will cause hunger in developing countries. In the last decade, there has been damage as a result of severe climatic conditions
Climate change is a change in the average global or regional weather patterns. Climate changes includes factors such as; temperature, precipitation, humidity, wind and seasons, influenced by oceans, land surfaces and ice sheets. This plays a
Climate change is defined as the change in global or regional climate patterns, which is apparent from the mid to late 20th century onwards. When looking at climate change there is an abundance of evidence that supports that humans are the leading causes of the drastic shift in the weather pattern but there is also a lot of evidence against humans actually causing climate changes. For example, the increasing levels of man made gases that are let into the atmosphere may have created a greenhouse effect, which traps heat and ultimately causes global warming. But there are also many scientists who believe that the earth has always naturally cooled down or warmed up at its own pace.
There is no doubt that climate is a considerable element for the agricultural production. However, along with the climate change, extreme weather tends to be more frequent and more intense that destructively affects framing. As a result, the drought occurred in sub-Saharan Africa became continual and long duration, which resulted in poor harvests. In addition,
This is a global issue, however the greatest impact would be on Canada, where we are technically advanced in farming. There was a study that showed the relationship between weather related disasters and crop yields from over the globe. The authors of the study outlines how the world’s food supply is vulnerable because of climate change. This creates a strain on the world as there needs to be food grown that would supply the growing population. Navin Ramankutty (the senior author on the study and a professor of global food security and sustainability) states, “The food system is already stressed in many ways.” He also says that with climate change, we are adding more stress on it. Navin and his colleagues at UBC and McGill University took information from a database that had 2 800 weather disasters in 177 countries from 1964 to 2007. The results that they got indicated the impacts on food production from heat waves, and droughts. The study found that recent droughts impact on food production increased by 7-per-cent compared to the droughts from the decades past. This was the effects of climate change. Dr. Ramankutty’s study warns the world food
Climate change is the change in average weather of a region. Climate change can be, for example, change in region’s average annual rainfall or change in region’s average temperature for certain period (May, 2011). In a broader view, climate change can also be seen as change in Earth’s climate with an example being global warming.
Climate change can be defined as a significant change in the “average weather” of any given region sustained in the long-term and can be caused by Earth 's dynamic processes, external forces including variations in sunlight intensity, and also by human activities (USEPA, 2014).
There are many adaptation strategies for farmers to meet the growing challenge of climate change, such as breed and seed selection, water conservation and adjusting the timing of farming operations. These adaptations along with investment in agricultural production are required to maintain and enhance global food security.
When you hear the words “climate change” what comes to mind? Probably weather and the changes. Many of us watch the news or use an app on our cellphones/electronic devices to keep an eye on the weather for the day, week, or even the month. But, there is actually a difference between weather and climate. Weather is actually “the changes we see and feel outside from day to day. It might rain one day and be sunny the next. Weather also changes from place to place” (Dunbar, 2014). Whereas “climate is the usual weather of a place. Climate can be different for different seasons. Different places can have different climates” (Dunbar, 2014). This paper will focus on the ins and outs of climate change, specifically focusing on what climate change
The Intergovernmental Panel on Climate Change (IPCC) defines climate change as “A change in the state of the climate that can be identified (e.g by using statistical tests) by changes in mean and/or the variability of its properties and that persists for an extended period, typically, decades or longer. Climate change may be due to natural internal processes or external forcings, or anthropogenic changes in the composition of the atmosphere or in the landuse”
This resource helps my research because it provides information on how climate change has affected crops in different countries. It then goes on to explain ways that FAO is planning to decrease the hunger population by supporting smaller farms, transforming markets
Climate Change is the significant change in the climate and distribution of weather patterns on Earth ranging from the last decade to millennia earlier.
Climate change is defined as “a change in global or regional climate patterns, in particular a change apparent from the mid to late 20th century onwards and attributed largely to the increased levels of atmospheric carbon dioxide produced by the use of fossil fuels.” Climate change has happened as a cycle throughout history, with ice ages occurring, and then warming. The earth naturally warms and cools, but due to the burning of fossil fuels the rate is growing exponentially.
Drought is another factor of climate change that causes severe damages to agriculture and livestock. The effects of drought on agricultural production and livestock holding can be a detrimental issue and result in quality dissatisfaction of products. The agricultural industry can be affected by drought both economically and environmentally. The economical effects of drought on crops and animals can lead to the loss of money and time. When droughts occur farmers lose money because they will have to spend more money earned from their
Agriculture is one of the major sector becoming vulnerable to climate-change. Increased incidences of abiotic and biotic stresses are likely to cause serious negative impact on crop production. Abiotic stress is defined as the negative impact of non-living factors on the living organisms in a specific environment. The non-living variable must influence the environment beyond its normal range of variation to adversely affect the performance or individual organism in a significant way. This leads to decrease in the productivity by more than 50% in major crop plants which are growing word wide (Bray et al., 2000). Increased water stress, reduction in rainfall and increased air temperature are the major reasons for yield decline in wheat and paddy crops in many parts of South Asia. The average increase in temperature per decade is measured to be 0.28 ºC over land and 0.12 ºC over ocean and predicted that it is likely to rise further to a maximum of 2.5 ºC by 2050 and 5.8 ºC by 2100 (Jones et al., 1999; Grover et al., 2011). The principal abiotic stresses in India are drought or soil moisture stress, high temperatures, soil salinity/alkalinity, low pH and metal toxicity stresses that affect nearly two-thirds area forming parts of the arid and semi arid eco systems (Grover et al., 2011).
Firstly, climate change has a big impact with world hunger. Climate change may affect food systems in several ways ranging from direct effects on crop production (e.g. changes in rainfall leading to drought or flooding, or warmer or cooler temperatures leading to changes in the length of growing season), to changes in markets, food prices and supply chain infrastructure (Gregory, Ingram & Brklacich, 2005, p.2139). It can trigger a natural disaster like drought and flood, which can have an extreme effect with the problems in the sources of food. In one hand, drought is a common scenario in farm lands in which