DRY-FIELD (TEGALAN) AGROFORESTRY SYSTEMS AS MINIATURE NATURE FOREST IN OUTSIDE FOREST AREA ON BULU - GIRIPURWO VILLAGE, GIRIMULYO DISTRICT, KULONPROGO
Abstract
A dry-field (tegalan) is one of the subsystems of classical agroforestry, where there is no intensive management of both the spacing and the selection of the type that is considered. Dry-field (tegalan) agroforestry subsystems have a state that resembles natural forest ecosystems. It became an opportunity execution of research related to the stands composition of dry-field (tegalan) and forest nature. The purpose of this study is to determine the pattern of developing agroforestry in Bulu and the relation of the natural forest. This research was conducted in Bulu-Giripurwo Village, Girimulyo District, Kulonprogo. Data was collected at 36 sample plots representing 3 strata. The first stratum had an area of < 1000 m2, the second 1,000 m2–2,000 m2, and the third > 2,000 m2. K-Means Cluster Analysis and exponential equation modeling was used to analyze the dry-field (tegalan). The results of this study indicate that there were three models of management of cultivated land in Bulu; the Mixed Model, Model MPTS dominant plants, and forest trees dominant model. Mixed models had the stand equation Y = 3.39 x 2.7128-0,026X with an R2 of 0.798. The dominant MPTS plan models had the stand equation 3,155 x 2.7128-0,021X with an R2 of 0.770. The dominant of forest trees models has stands equation Y = 3.182 x 2.7128-0,024X with R2 of 0.706. These results demonstrate agroforestry modeling subsystem dry-field (tegalan) has characteristics resembling natural forest indicated from the value of R2 that characterized so close with the equation of uneven-aged forest model.
Keywords: Agroforestry, dry-field (tegalan), natural forest
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