DOI : https://doi.org/10.18517/ijaseit.7.3.2442

Water Yield Analysis on Area Coveredby Pine Forest at Kedungbulus Watershed Central Java, Indonesia

Irfan Budi Pramono (1), M.T.S. Budiastuti (2), T. Gunawan (3), - Wiryanto (4)
(1) Watershed Management Technology Center, Ministry of Environment and Forestry
(2) Faculty of Agriculture, SebelasMaret University (UNS), Jalan Ir. Sutami No. 36A, Jebres, Surakarta, 57126, Indonesia.
(3) Faculty of Geography, GadjahMada University (UGM), Sekip Utara, Bulaksumur, Sinduadi, Sleman, Yogyakarta, 55281, Indonesia.
(4) Faculty of Mathematic and Natural Science, SebelasMaret University (UNS),Jalan Ir. Sutami No. 36A, Jebres, Surakarta, 57126, Indonesia.
Fulltext View | Download
How to cite (IJASEIT) :
Pramono, Irfan Budi, et al. “Water Yield Analysis on Area Coveredby Pine Forest at Kedungbulus Watershed Central Java, Indonesia”. International Journal on Advanced Science, Engineering and Information Technology, vol. 7, no. 3, June 2017, pp. 943-9, doi:10.18517/ijaseit.7.3.2442.
Citation Format :
The analysis of water yield is conducted to provide information on the availability of water resources at a particular location in a watershed. Kedungbulus watershed is located at an area with plantation of pine forest. The pine forest area varies from 7% to 95% of the sub watershed areas. The plantation of this kind of vegetation (Pinusmerkusii) in some regions may cause water availability problem due to it may consume much more water rather than others. The objective of this study is to analyze the effect of pine forest area and its characteristics on the water yield in several of sub watershed at Kedungbulus Watershed. Direct measurement and prediction were used to estimate the water yield. A Thorthwaite and Mather method was used in this study to estimate the water yield. It was completed with data of rainfall, air temperature, soil properties, and land cover. Stand density varies from 388 to 644 stand/hectare and diameter at breast height (DBH) varies from 20 to 40 cm. The annual rainfall during the year of 2015 at the location was 2525 mm. It was found that the water yield tends to decrease with the increase of pine forest area. The water yield of the watershed with pine forest covered of 7% was 1520 mm/year, while watershed with pine forest covered 95% was lower (1289 mm/year). In order to increase the water yield, the pine forest plantation is not recommended in a certain area with low rainfall. Modified Thorthwaite-Mather Water Balance method was successfully applied to this case with a significant increase in determination coefficient from 0.3 to 0.7.

Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
    2. 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.
    3. 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).