<![CDATA[Boyong River is upstream of Code River and one of the areas potentially affected by volcanic mudflow and pyroclastic flow of Mount Merapi. Boyong River is the upstream of Code River that passes through Hargobinangun Village to Sinduharjo Village. Vegetation data collection in this study used the Belt Transect method as far as 50 meters. Each station consisted of 10 continuously placed plots, and vegetation measurements were taken on each 10 × 10 m plot. Data were analyzed using the Spatially Explicit Individual-based Forest Simulator (SExI-FS) software version 2.1.0. The diversity of riparian vegetation in the Boyong River was found to be as much as 29 species. Albizia falcataria had the highest IVI rate, with 96% and 63% at stations 1 and 3, respectively.Swietenia mahagoni had the highest IVI rate at station 2, with 91%. The Boyong River has varied canopy stratification, and there is one location that has complete strata (strata A, B, C, and D), namely Candibinangun Village, while Hargobinangun Village and Sinduharjo Village only have three canopy strata. Canopy closure in the Boyong River still left canopy gaps that allowed other plants to grow and occupy empty space, while Candibinangun and Sinduharjo villages formed layers that overlapped each other.]]>
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