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Optimal Sampling Intensity in South Korea for a Land-Use Change Matrix Using Point Sampling

Author

Listed:
  • Ga-Hyun Moon

    (Forest ICT Research Center, National Institute of Forest Science, Seoul 02455, Korea)

  • Jong-Su Yim

    (Forest ICT Research Center, National Institute of Forest Science, Seoul 02455, Korea)

  • Na-Hyun Moon

    (Department of Forest, Environment, and System, Kookmin University, Seoul 02707, Korea)

Abstract

To report changes in land use, the forestry sector, and land-use change matrix (LUCM), monitoring is necessary in South Korea to adequately respond to the Post-2020 climate regime. To calculate the greenhouse gas statistics observing the principle of transparency required by the Climate Change Convention, a consistent nationwide land-use classification and LUCM are required. However, in South Korea, land-use information is available from the 5th National Forest Inventory conducted in 2006 onwards; therefore, developing methods to determine historical LUCM information, including the base year required by the Intergovernmnetal Panel on Climate Change (IPCC), is essential. To determine the optimal sampling intensity for measuring systematic land-use changes and to estimate the corresponding area of land-use categories for previously unmeasured years, seven intensities—2 × 2 km to 8 × 8 km—were tested using the areas of the 3rd and 4th aerial photographs in time series for forestland, cropland, grassland, wetland, and settlements, according to their standard deviations and estimates of uncertainty. Analyses of statistical accuracy, statistical efficiency, economic efficiency, and convenience showed that a sampling intensity of 4 × 4 km was ideal. Additionally, the categorized areas of unmeasured land-use years were calculated through linear interpolation and extrapolation. Our LUCM can be utilized for developing a national greenhouse gas inventory.

Suggested Citation

  • Ga-Hyun Moon & Jong-Su Yim & Na-Hyun Moon, 2021. "Optimal Sampling Intensity in South Korea for a Land-Use Change Matrix Using Point Sampling," Land, MDPI, vol. 10(7), pages 1-16, June.
    • Handle: RePEc:gam:jlands:v:10:y:2021:i:7:p:677-:d:583415
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    References listed on IDEAS

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    1. Dedinec, Aleksandar & Taseska-Gjorgievska, Verica & Markovska, Natasa & Obradovic Grncarovska, Teodora & Duic, Neven & Pop-Jordanov, Jordan & Taleski, Rubin, 2016. "Towards post-2020 climate change regime: Analyses of various mitigation scenarios and contributions for Macedonia," Energy, Elsevier, vol. 94(C), pages 124-137.
    2. Till Pistorius & Sabine Reinecke & Astrid Carrapatoso, 2017. "A historical institutionalist view on merging LULUCF and REDD+ in a post-2020 climate agreement," International Environmental Agreements: Politics, Law and Economics, Springer, vol. 17(5), pages 623-638, October.
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