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http://dx.doi.org/10.7780/kjrs.2017.33.6.3.3

Comparison of the Estimated Result of Ecosystem Service Value Using Pixel-based and Object-based Analysis  

Moon, Jiyoon (Korea Aerospace Research Institute)
Kim, Youn-soo (Korea Aerospace Research Institute)
Publication Information
Korean Journal of Remote Sensing / v.33, no.6_3, 2017 , pp. 1187-1196 More about this Journal
Abstract
Despite the continuing effort to estimate the value of function and services of ecosystem, most of the researches has used low and medium resolution satellite imagery such as MODIS or Landsat. It means that the researches to measure the ecosystem service value using VHR (Very High Resolution) satellite imagery have not been performed much, while the source of available VHR imagery is increasing. Thus, the aim of this study is to estimate and compare the result of ecosystem service value over Sejong city, S. Korea, which is one of the rapidly changed city, through the pixel-based and object-based classification analysis using VHR KOMPSAT-3 images, for more specific and precise information. In the result of the classification, forest and grassland were underestimated while agriculture and urban were overestimated in the pixel-based result compared to the object-based result. Furthermore, bare soil area was presented contrasting result that was increased in the pixel-based result, however, decreased in the object-based result. Using those results, ecosystem service values were estimated. The annual ecosystem service values in 2014 were $8.18 million USD(pixel-based) and $8.63 million USD(object-based), however, decreased to $7.80 million USD(pixel-based) and $8.62 million USD(object-based) in 2016. It is expected to use those results as a preliminary data when to make sustainable development plan and policy to improve the quality of life in the local level.
Keywords
Ecosystem service; KOMPSAT-3; pixel-based; object-based; classification;
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