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Comparison of two soil quality assessment models under different land uses and topographical units on the southwest slope of Mount Merapi

Author

Listed:
  • Retno Meitasari

    (Department of Soil Science, Faculty of Agriculture, Universitas Gadjah Mada, D.I. Yogyakarta, Indonesia)

  • Eko Hanudin

    (Department of Soil Science, Faculty of Agriculture, Universitas Gadjah Mada, D.I. Yogyakarta, Indonesia)

  • Benito Heru Purwanto

    (Department of Soil Science, Faculty of Agriculture, Universitas Gadjah Mada, D.I. Yogyakarta, Indonesia)

Abstract

This study aims to compare the soil quality indexing model by adding and weighting the soil under different land uses and slope positions on the southwest slope of Mount Merapi, Indonesia. Soil sampling was carried out based on a landscape analysis divided into four geomorphological units (slopes): upper, middle, lower and foot slopes. The research design was nested where the soil sample was located (surface soil 0-30 cm). Based on the research results, soil quality indices (SQI) of forest on the upper slopes is very high. SQI of dry fields on the middle, lower and foot slopes is low to medium. SQI of mixed gardens on the middle and lower slopes is low to medium. SQI of snake fruit land on the middle, lower and foot slopes is medium to high. SQI of grassland on the lower slopes is medium to high, and SQI of paddy fields on the foot slopes is medium to high. Weighted soil quality index (SQIw) has a higher correlation (R2 = 0.90) and can predict soil quality better than the adding soil quality index (SQIa) model (R2 = 0.76). Indicators that most influence soil quality are the percentage of sand, total N, C-POM, C-Min, pH, and aggregate stability, that indicators are entirely influenced by organic matter, site-specific management to maintain SQI by maintaining organic matter. The selected indicators in this study can be used to determine the SQI in similar areas.

Suggested Citation

  • Retno Meitasari & Eko Hanudin & Benito Heru Purwanto, 2024. "Comparison of two soil quality assessment models under different land uses and topographical units on the southwest slope of Mount Merapi," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 19(2), pages 77-89.
    • Handle: RePEc:caa:jnlswr:v:19:y:2024:i:2:id:76-2023-swr
    DOI: 10.17221/76/2023-SWR
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    References listed on IDEAS

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    1. Man Liu & Guilin Han & Qian Zhang, 2019. "Effects of Soil Aggregate Stability on Soil Organic Carbon and Nitrogen under Land Use Change in an Erodible Region in Southwest China," IJERPH, MDPI, vol. 16(20), pages 1-14, October.
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