자료유형  

 학위논문

Control Number  

0016934136

International Standard Book Number  

9798380368353

Dewey Decimal Classification Number  

363

Main Entry-Personal Name  

Beltran-Pena, Areidy Aracely.

Publication, Distribution, etc. (Imprint  

[S.l.] : University of California, Berkeley., 2023

Publication, Distribution, etc. (Imprint  

Ann Arbor : ProQuest Dissertations & Theses, 2023

Physical Description  

1 online resource(125 p.)

General Note  

Source: Dissertations Abstracts International, Volume: 85-03, Section: A.

General Note  

Advisor: D'Odorico, Paolo.

Dissertation Note  

Thesis (Ph.D.)--University of California, Berkeley, 2023.

Restrictions on Access Note  

This item must not be sold to any third party vendors.

Summary, Etc.  

요약This dissertation focuses on evaluating the hydrological impacts of climate change on water and food systems through integrated assessment models at various scales (global, country, and regional). The first chapter explores the future of global food self-sufficiency analysis in the 21st century under sustainable intensification of agriculture. By integrating biophysical, hydrological, climate, and societal models, the study considers factors such as sustainability, diet changes, population growth, agricultural intensification, and climate to project future scenarios. The findings reveal a concerning trend, indicating a probable decline in global food self-sufficiency within the middle-of-the-road and business-as-usual trajectories. In the second chapter, the focus shifts to Africa, a region experiencing high levels of food insecurity due to climate change and population growth. By assessing the impact of irrigation expansion on agricultural productivity and climate adaptation, the study highlights the limitations of irrigation alone in achieving food self-sufficiency. Under a 3°C warmer climate, Africa's total food production would only be sufficient to feed 1.35 billion people, while the population is projected to reach 3.5 billion. This underscores the need for additional strategies beyond irrigation alone to achieve food self-sufficiency, such as cropland expansion or increased reliance on imports. At a regional level, the third chapter employs Earth system models to assess the vulnerability of California's water-food nexus to changing snow regimes due to climate change. With a majority of snow monitoring sites showing declines in snowpack depths and earlier snowmelt onset, the study highlights the potential consequences of declining snowmelt on water availability for crop production, raising concerns about food security in a region already grappling with increased demand. This dissertation provides a comprehensive understanding of the complex dynamics influencing global food security. The findings emphasize the importance of sustainable practices, the limitations of irrigation expansion in addressing food deficits in Africa, and the vulnerability of water resources to declining snowpack in California. These insights contribute valuable knowledge for policymakers and stakeholders in formulating effective strategies to ensure a sustainable and secure food future for the global population.

Subject Added Entry-Topical Term  

Climate change.

Subject Added Entry-Topical Term  

Agriculture.

Subject Added Entry-Topical Term  

Hydrologic sciences.

Subject Added Entry-Topical Term  

Natural resource management.

Subject Added Entry-Topical Term  

Sustainability.

Index Term-Uncontrolled  

Food systems

Index Term-Uncontrolled  

Hydrological impacts

Index Term-Uncontrolled  

Food insecurity

Index Term-Uncontrolled  

Agricultural productivity

Index Term-Uncontrolled  

Africa

Added Entry-Corporate Name  

University of California, Berkeley Environmental Science Policy & Management

Host Item Entry  

Dissertations Abstracts International. 85-03A.

Host Item Entry  

Dissertation Abstract International

Electronic Location and Access  

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Control Number  

joongbu:641246