SOIL QUALITY CHANGES FOLLOWING FOREST CLEARANCE IN BENGKULU, SUMATRA
AbstractIntense destruction and degradation of tropical forests is recognized as one of the environmental threats and
tragedies. These have increased the need to assess the effects of subsequent land-use following forest extraction on
soil quality. Therefore, the objective of this study is to evaluate the impacts of land-use type on soil quality properties in
Bengkulu Province, Sumatra. Soil samples were collected from adjacent sites including natural secondary forest, bare
land, cultivated land and grassland. The results show that land-use following forest clearance lowered saturated
hydraulic conductivity (85%), porosity (10.50%), soil water content at field capacity (34%),C organic (27%), N total (26%),
inorganic N (37%), soil microbial biomass C (32%), mineralizable C (22%), and particulate organic matter (50%), but slightly
increased water soluble organic C. Specific respiration activity rates increased about 14% in cultivated soils compared
to natural forest soils, indicating greater C turnover per labile C pool in the form of soil microbial biomass, thus decreased
biologically active soil organic matter. Forest conversion tends to reduce the C,ffg/Crer for all deforested sites. All of
deforested areas relatively have infertile soil, with the worst case found in cultivated field. The C^g/Crd of cultivated fields
was about 24% less than that of remnant forest (1.07). Grassland apparently maintains only slightly higher soil C levels
than the bare land. On average, degradation index of soil following forest clearance was 35% with the highest
deterioration occurred in the bare land (38%). Fallowing the fields by naturally growth ofÂ Imperata cylindricaÂ for
about 15 yr in abandoned land after 3-5 years of cultivation did not improve the soil quality. Moreover, forest
clearance has an impact on soil quality as resulted in the loss of a physically protected organic matter and reduction in
some labile C pools, thus declined biological activity at disturbed ecosystems.
Keywords: Degradation index / forest / Imperata cylindrica grassland / soil quality/ soil organic matter
Download data is not yet available.
How to Cite
HANDAYANI, I. P. (2011). SOIL QUALITY CHANGES FOLLOWING FOREST CLEARANCE IN BENGKULU, SUMATRA. BIOTROPIA - The Southeast Asian Journal of Tropical Biology, (22). https://doi.org/10.11598/btb.2004.0.22.205
LicenseAuthors who publish with this journal agree with the following terms:
- Authors retain copyright and grant the journal right of first publication, with the work 1 year after publication simultaneously licensed under a Creative Commons attribution-noncommerical-noderivatesÂ 4.0 InternationalÂ License that allows others to share, copy and redistribute the work in any medium or format,Â but only where the use is for non-commercial purposesÂ and an acknowledgement of the work's authorship and initial publication in this journal is mentioned.
- Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
- Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).