Open AccessThe influence of teak plantation areas on water yield and peak discharge from five catchments in Blora Regency
Author(s) -
Tyas Mutiara Basuki,
Irfan Budi Pramono
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/533/1/012010
Subject(s) - environmental science , yield (engineering) , hydrology (agriculture) , drainage basin , java , water discharge , forestry , geography , geology , geotechnical engineering , materials science , cartography , computer science , metallurgy , programming language
Teak plantation occupies 67% of plantation areas in Java-Indonesia; however, its impact on hydrological responses has not been studied in detail. Therefore, a study to assess the impact of teak areas on water yield and peak discharge was conducted in Blora, Central Java. Five catchments with different percentages of the mature teak plantation from 53% to 82% were chosen. Five stream water level recorders were installed at the outlet of the catchments to measure stream water level (SWL). The SWL data were converted into a discharge. Based on 2008-2018 data, the results showed that the lowest monthly (8-41 mm mo −1 ) and annual (140-445 mm yr −1 ) water yield were found in Modang catchment with teak areas (82%), and the highest monthly (41-107 mm mo −1 ) and annual (526-1,500 mm yr −1 ) water yield occurred in Kejalen catchment with teak areas (74%). Generally, all the catchments had the highest water yield in 2010 and the lowest in 2012. It was found that the broader the teak areas, the lower the peak discharge. Although the catchments with the highest (82%) teak areas produced less monthly and annual water yield compared to the catchments with less teak coverage, however, the catchments with high teak coverage can control peak discharge.