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Accueil du site → Master → Etats Unis → 2016 → Geospatial Analysis of Droughts, Rice and Wheat Production, and Agrarian Vulnerability : A District-Level Study of the self-calibrated Palmer Drought Severity Index in India

UNIVERSITY OF ARKANSAS (2016)

Geospatial Analysis of Droughts, Rice and Wheat Production, and Agrarian Vulnerability : A District-Level Study of the self-calibrated Palmer Drought Severity Index in India

Shew, Aaron Michael

Titre : Geospatial Analysis of Droughts, Rice and Wheat Production, and Agrarian Vulnerability : A District-Level Study of the self-calibrated Palmer Drought Severity Index in India

Auteur : Shew, Aaron Michael,

Université de soutenance : UNIVERSITY OF ARKANSAS

Grade : Master of Arts (MA) 2016

Résumé
Droughts have affected more people than any other natural disaster in the last century, causing billions in economic damages and millions of deaths. As the Sea Surface Temperatures (SST) have heated in the Indian Ocean, drought patterns across South Asia have changed ; the Indian monsoon has become more volatile and less predictable. In this study, monthly self-calibrated Palmer Drought Severity Index (sc-PDSI) data for the time period between 1950 and 2009 were interpolated to India’s districts ; then the data were analyzed for changes in frequency and severity. The data were further evaluated using Anselin’s Local Moran’s I Statistic to elicit the spatial autocorrelation of droughts by decade from 1950 to 2009. This analysis showed the concentration of droughts in certain regions of India relative to others for each decade. Droughts in the 2000-2009 time period were particularly concentrated and severe over the Gangetic Plains, one of the primary regions for agricultural production.

Mots Clés : Geography ; Climate change ; Agriculture

Présentation

Page publiée le 16 novembre 2016, mise à jour le 16 juillet 2017