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Interactive Effects Of Warming And Nitrogen Deposition On Net Ecosystem Co2 Flux In A Temperate Old Field., Min Ku Kim
Interactive Effects Of Warming And Nitrogen Deposition On Net Ecosystem Co2 Flux In A Temperate Old Field., Min Ku Kim
Digitized Theses
Global warming and increased atmospheric nitrogen deposition are expected to alter the carbon balances of ecosystems over the next century. My study measured net ecosystem CO2 exchange (NEE) in response to warming and nitrogen addition in a temperate old field using open system canopy chambers. Additionally, I assessed the indirect effects of warming and nitrogen addition on NEE caused by changes in aboveground productivity. In both 2009 and 2010, the study system was a net source of carbon, with the highest CO2 efflux during mid-summer. Warming and nitrogen addition did not affect NEE patterns in both years, notwithstanding a significant …
Floodplain Mapping In The Upper Thames River Basin Under Climate Change, Dragan Sredojevic
Floodplain Mapping In The Upper Thames River Basin Under Climate Change, Dragan Sredojevic
Digitized Theses
Climate change will bring to the Upper Thames River basin more severe and more frequent floods. The City of London, which has a population of over 350,000, is one of the most vulnerable locations in the basin. This study focuses on floodplain mapping and hydraulic modeling, which constitutes one component of a larger project for the assessment of the risk of climate change (with a special emphasis on flooding) to London’s public infrastructure. A combined approach to climate and hydrologic modeling was used to generate input flow data for hydraulic modeling. Standard computer software, HEC-RAS, is used for hydraulic computation …