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Remote Sens. 2012, 4(4), 849-866; doi:10.3390/rs4040849

Estimating Net Primary Production of Turfgrass in an Urban-Suburban Landscape with QuickBird Imagery

1,*  and 2
1 Department of Geography, California State University, Fullerton, 800 North State College Boulevard, Fullerton, CA 92831, USA 2 Department of Forest Resources, University of Minnesota, 1530 Cleveland Avenue North, Saint Paul, MN 55108, USA
* Author to whom correspondence should be addressed.
Received: 29 January 2012 / Revised: 15 March 2012 / Accepted: 16 March 2012 / Published: 27 March 2012
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Vegetation is a basic component of urban-suburban environments with significant area coverage. As a major vegetation type in US cities, urban turfgrass provides a range of important ecological services. This study examined the biological carbon fixation of turfgrass in a typical residential neighborhood by linking ground-based measurements, high resolution satellite remote sensing, and ecological modeling. The spatial distribution of turfgrass and its vegetative conditions were mapped with QuickBird satellite imagery. The significant amount of shadows existing in the imagery were detected and removed by taking advantage of the high radiometric resolution of the data. A remote sensing-driven production efficiency model was developed and parameterized with field biophysical measurements to estimate annual net primary production of turfgrass. The results indicated that turfgrass accounted for 38% of land cover in the study area. Turfgrass assimilated 0–1,301 g∙C∙m−2∙yr−1 depending on vegetative conditions and management intensity. The average annual net primary production per unit turfgrass cover by golf course grass (1,100.5 g∙C∙m−2) was much higher than that by regular lawn grass (771.2 g∙C∙m−2). However, lawn grass contributed more to the total net primary production than golf course grass due to its larger area coverage, although with higher spatial variability.
Keywords: urban vegetation; modeling; carbon cycle; high resolution urban vegetation; modeling; carbon cycle; high resolution
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Wu, J.; Bauer, M.E. Estimating Net Primary Production of Turfgrass in an Urban-Suburban Landscape with QuickBird Imagery. Remote Sens. 2012, 4, 849-866.

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