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Tamil Nadu Agricultural University (2013)

Impact of climate variability on agriculture and the determinants of climate adaptation through agricultural technologies in the western zone of tamil nadu

Vijayasarathy K.

Titre : Impact of climate variability on agriculture and the determinants of climate adaptation through agricultural technologies in the western zone of tamil nadu

Auteur : Vijayasarathy K.

Université de soutenance : Tamil Nadu Agricultural University

Grade : Doctor of Philosophy (PhD) in Agricultural Econolics 2013

Résumé partiel
Climate change refers to any change in climate variables over time, whether due to natural variability or as a result of human activity. These changes have wide ranging of direct and indirect impact on water resources, agriculture and food security, forest and biodiversity, infrastructure, and livelihood of people. The increasing in average global temperatures (global warming), changes in cloud cover and precipitation over land, melting of ice cap and glaciers and reduced snow cover ; and increase in ocean temperature and ocean acidity, rising sea level,are the major phenomenon of climate change. The increasing temperatures and erratic rainfall pattern impacts agricultural production. The low income households highly dependent on subsistence farming especially from developing countries are more vulnerable to the climate change. Specific impacts of climate change on a country depends on the existing climatic condition of the country and others factor such as geographical, social, cultural, economic and political situations. Hence, countries require a diversity of adaptation measures very much depending on individual circumstances. Adaptation is widely recognized as a vital component of any policy response to climate change. Adaptation processes make societies better to cope with an uncertain future. Adapting to climate change entail taking the right measures to reduce the negative effects of climate change by making the appropriate adjustments and changes. The present study was undertaken with the overall objective of estimating the impact of climate variability on agriculture, the extent of adaptive capacity of agriculture to climate variability and the role of agricultural technologies on adaptation. It is evident from trend analysis, among the seven zones of Tamil Nadu, Western Zone had significant climate variability in terms of temperature and precipitation. Hence, Western Zone was selected to study the impact of climate change and adaptation strategies of farm households with respect to climate variability. The primary data were collected from 180 randomly selected sample farmers distributed equally at 30 sample farms in each district and six samples around each automatic weather station. The secondary data on temperature and rainfall were collected from automatic weather station data and Season and Crop Report.

Présentation et version intégrale (Shodhganga)

Page publiée le 18 avril 2021