Dissertation
Spatial suitability analysis for site selection of vineyards using biophysical models and computational intelligence
Doctor of Philosophy (PhD), Washington State University
01/2016
Handle:
https://hdl.handle.net/2376/117893
Abstract
The goal of our study was to develop a comprehensive land-assessment system for grapevine (Vitis vinifera L.) suitability analysis with the ability to spatially incorporate biophysical information from the Pacific Northwest (PNW) region of the United States. The potential for using satellite remote-sensing products for estimating the key phenological metrics of several vineyards located in the Columbia Valley of Washington was first evaluated. Remote sensing products such as Land Surface Temperature (LST) and the Normalized Difference Vegetation Index (NDVI) were also used to estimate the near surface air temperature of the region, which has complex terrain. Our results indicated discrepancies in the bias distribution due to the type of landcover present. During the following phase of our study, daily weather data were obtained from the Gridded Surface Meteorological data-set from the University of Idaho (UI GSM) for a 30-year period (1983-2012). This weather dataset were utilized to compute several bio-climatic indices that were used in turn for characterizing weather dynamics of the American Viticultural Areas (AVA) located within the PNW. Previously established bio-climatic indices were also modified to improve the capture of the underlying weather phenomena of the region, and were then used for the development of the weather component of our land-assessment system. For the edaphic and topographic components of the system, soil data were obtained from the gSSURGO dataset and topographical component data were obtained from the National Elevation Dataset (NED). The potential for grape production in a region can be restricted by many parameters; therefore, land-cover and water rights information were also incorporated into our system. Fuzzy logic rules were used to transform the input parameters in to a common scale and to calculate the vineyard potential for the study area. Finally, our developed land-assessment system was evaluated with a comparison of the vineyard potential of established vineyards. The results of our study has proven that our system can be used as an accurate method to help decision makers, growers, and researchers gain a better understanding of the underlying biophysical parameters that contribute to the potential of various areas of the PNW for wine grape production.
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Details
- Title
- Spatial suitability analysis for site selection of vineyards using biophysical models and computational intelligence
- Creators
- Golnaz Badr
- Contributors
- Gerrit Hoogenboom (Advisor)Claudio Stockle (Advisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Department of Biological Systems Engineering
- Theses and Dissertations
- Doctor of Philosophy (PhD), Washington State University
- Number of pages
- 225
- Identifiers
- 99900581523601842
- Language
- English
- Resource Type
- Dissertation