Senior Thesis – Drivers of land-use change in Mato Grosso: A ten-year MODIS analysis

Senior thesis - PDF download (13.2MB)
Senior thesis – PDF download (13.2MB)

As part of my Bachelor of Science in Environmental Science degree program, I am required to write a senior thesis. After taking GEOL133 in Spring 2010, I knew I was interested in exploring additional topics in remote sensing. My GEOL133 professor, Jack Mustard, got me involved in some of his research examining agricultural extensification and intensification in the central Brazilian state of Mato Grosso. After two semesters of downloading data, learning IDL, processing tiles, testing smoothing techniques, and creating figures, this was the result.

I want to thank my advisors, Jack Mustard, Leah VanWey, and Chris Neill for their invaluable help, guidance, and feedback. Additional thanks to Lynn Carlson, Gillian Galford, Xi Yang, Rebecca de Sa, Shelby Riskin, Marcio Caparroz, Peter Klein, and Brett Lien for their help and assistance.

Abstract

The Brazilian state of Mato Grosso represents a hotspot of large-scale anthropogenic land-use change with major implications for the global carbon cycle, biodiversity, and regional climatic processes. Previous research has documented both the expansion of croplands into the state’s rainforest and cerrado biomes and the intensification of existing croplands through the increased prevalence of multi-cropping. Less closely examined are the socioeconomic drivers of this agricultural growth. In this study, we use the latest version of 250 meter vegetation indices satellite data from Terra-MODIS and a phenology classification algorithm to characterize cropland expansion and multi-cropping intensification in Mato Grosso on a yearly basis from August 2000 through August 2010. We compared these land-use changes to variations in commodity prices, exchange rates, export destinations, and other relevant events. We observed a 25,095 km2 increase in the total area of cropland, while the percentage of cropland classified as multi-cropped grew from 37.6% to 64.4%. These changes correlated most closely to the exchange rate of the Brazilian real to the currencies of its primary soybean export destinations (Europe and China). Significant appreciation of the real since 2009 would suggest decreased cropland expansion and multi-cropping intensification going forward. However, recent rises in commodity prices and sweeping changes proposed to Brazil’s Forest Code may encourage continued or increased land-use change in the near future.

HIAA85 Final Paper: Exeter Library

This was my final paper for HIAA0850: Modern Architecture. Our prompt was to pick an architect, building type, singular building, building material, or building technique. I chose the Class of 1945 Library at Phillips Exeter. As an Exeter student, I had known that the library was architecturally significant. I was glad that I had the opportunity to learn why it was significant in HIAA85.

Louis Kahn’s Exeter Library: A Reinterpretation of the Ideal Reading Space

Louis Kahn’s Exeter Library (1969-1971) masterfully upends the traditional layout of libraries.  At the time, most well-regarded libraries encircled a single, grand, high-ceilinged reading room with many individual floors of bookshelves (Figure 1).  While the communal reading room impressed and awed the scholar by demonstrating the immense quantity of accumulated knowledge available to them, this design conflicted with Kahn’s vision of the ideal reading spot.  Instead of a single, grandiose, reading room, Kahn pictured smaller, more private, and more intimate spaces next to outside windows: carrel desks.  To integrate this vision into the Exeter Library, Kahn surrounded the traditional atrium and ring of bookshelves with another outer ring of carrels and tables next to large windows (Figure 1), keeping students close to the sun’s illuminating glow and books away from its damaging rays.  Through this innovation and many others, Louis Kahn’s meticulous and thoughtful design of the Exeter Library earned the building the Twenty-Five Year Award from the American Institute of Architects.  The Exeter Library is truly a hidden gem among Kahn’s monumental, modernist jewels.

Figure 1a: The Bibliothèque Sainte-Geneviève in Paris has a single, communal reading room.
Figure 1a: The Bibliothèque Sainte-Geneviève in Paris has a single, communal reading room.
Figure 1b: The carrels at Kahn’s Exeter library are a more personal and intimate place to read with better lighting.
Figure 1b: The carrels at Kahn’s Exeter library are a more personal and intimate place to read with better lighting.

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