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dc.contributor.authorBaird, Rebecca A.
dc.date.accessioned2020-10-11T22:00:20Z
dc.date.available2020-10-11T22:00:20Z
dc.date.issued2011-08
dc.identifier.urihttp://hdl.handle.net/11122/11328
dc.descriptionThesis (M.S.) University of Alaska Fairbanks, 2011en_US
dc.description.abstractClimate has warmed substantially in boreal Alaska since the mid-1970s. The direct effects of rising temperatures on sub-Arctic ecosystems are already being observed in the form of drought stress, increased fire frequency and severity, and increased frequency and severity of herbivorous insect outbreaks. These effects of climate change are having a direct impact on the vegetation of the boreal forest and leading to a decreased remotely sensed normalized difference vegetation index (NDVI), which is an effective proxy for landscape-scale plant productivity and photosynthesis. Therefore, NDVI is a useful tool to examine landscape-scale changes in vegetation over time, especially in the context of known climate change. The overarching goal of my research was to assess the change in vegetation index at multiple scales over a period of 23 years at Bonanza Creek Experimental Forest. I used a combination of remote sensing and field sampling to examine trends in NDVI across landscape units, topographic classes, and plant communities. My project consists of two main parts: 1) Create a floristically-based landcover classification through field sampling and incorporating the field data into a map using satellite imagery and 2) Examine trends in the vegetation index using 11 Landsat TM and ETM+ images from 1986-2009. By using Landsat imagery and doing a landcover classification of my study area I was able define trends in NDVI to specific landscape units, topographic classes, and plant communities in the study area.en_US
dc.description.sponsorshipBonanza Creek LTER program (NSF award DEB-0620579 and USDA Forest Service, Pacific Northwest Research Station grant RJVA-PNW-01-JV-11261952-231), University of Alaska Fairbanks (UAF) Center for Global Change Student Awarden_US
dc.description.tableofcontents1. General introduction -- 2. Vegetation classification of the Bonzanza Creek Experimental Forest -- 3. Assessment of change in vegetation index in Bonanza Creek Experimental Forest -- 4. General conclusions.en_US
dc.language.isoen_USen_US
dc.subjectvegetation surveysen_US
dc.subjectAlaskaen_US
dc.subjectInterior Alaskaen_US
dc.subjectforest surveysen_US
dc.subjecttaigasen_US
dc.titleSpatial and temporal trends in vegetation index in the Bonanza Creek Experimental Foresten_US
dc.typeThesisen_US
dc.type.degreemsen_US
dc.identifier.departmentDepartment of Forest Sciencesen_US
refterms.dateFOA2020-10-11T22:00:21Z


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