Spodosols of East Kalimantan

Land Cover Disturbances Induced Degradation of Soil Properties

DOI

10.2991/absr.k.210408.066How to use a DOI?

Keywords

Spodosols, Parent Materials, Leaching, Acidification

Abstract

Spodosols are mineral soils derived from sandy to loamy sand parent materials developed under humid or wetter climate condition. Soils are coarse in texture, the acid in reaction and low in water and nutrient retention. In addition, these soils are characterized by a spodic horizon associated with the presence of fragipan or duripan layers at varying depth, limiting not only the growth of plant roots but also water and air availability and movement. The fertility of these soils relies on the SOM of the A layer of the soils. Any disturbance to these soils’ land cover may lead to irreversible degradation of soil properties and productivity. Vegetation found on the disturbed lands is mostly pioneer species, Imperata cylindrica and fern (Pteridophyta sp). Two land cover types, namely natural secondary forest and plantation forest in Semboja District, East Kalimantan, were selected for this study. This study aims to determine Spodosols’ properties – morphological, physical and chemical properties – induced by land cover change. For each land cover type, three soil profiles were established for the soil morphological property determination, and eight soil samples were drawn for the soil physical and chemical property analysis. The results show that compared to the soil in natural secondary forest, spodosols soil of plantation forest underwent loss of A horizon, bleaching of E horizon, soil compaction and fine particle leaching enhancement, especially in E layers. Furthermore, land cover disturbances intensify soil acidification and C- and N-organic decomposition.

Copyright

© 2021, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wahjuni Hartati
AU  - Jauhar Arifin
AU  - Triyono Sudarmadji
AU  - Syahrinudin
AU  - Daddy Ruhiyat
PY  - 2021
DA  - 2021/04/10
TI  - Spodosols of East Kalimantan
BT  - Proceedings of the Joint Symposium on Tropical Studies (JSTS-19)
PB  - Atlantis Press
SP  - 403
EP  - 409
SN  - 2468-5747
UR  - https://doi.org/10.2991/absr.k.210408.066
DO  - 10.2991/absr.k.210408.066
ID  - Hartati2021
ER  -