Judul: Inventarisasi keanekaragaman jenis tumbuhan di Kawasan Taman Nasional Gunung Merapi
Abstrak: Gunung Merapi National Park (TNGM) is a nature conservation area which has a native ecosystem in the form of blend with the forest ecosystem volcanic highland area of ± 6410 ha. The interaction that exists between communities and national park should be developed to support the preservation of national park and fully bring prosperity to the local community. The existence of national park should be able to provide benefits, not only to preserve natural resources, but also prosperity for local communities. In this regard, research is needed in providing inputs to the park managers and communities in the management TNGM. This study aimed to describe the general condition of the area, inventory and analyze the wealth and diversity of plant species and identify the medicinal uses of plants into different groups in the region TNGM usefulness. The research was done in merapi mount national park in 3 (three) month from June to August 2010. It was used some equipment such as : compass Brunton, GPS, diameter measuring tool, trash bag and digital camera. The research was used a secondary data of research location general condition and primary data which are covering : various kind of species, amount and diameter of poles and tree stages; various kind of species and amount of herb, undershrub, shrub, epiphyte and liana habitus. The primary data were collected by field orientation, vegetation analyzing with nested line transect method and herbarium making. The data were analyzed to find out the importance value, index of species richness, index of species diversity, pattern of plants spread and the use of plant species. Total plant species found in the region TNGM 108 species from 52 families, with most of the family Euphorbiaceae and Fabaceae (7 species). The highest species richness and diversity found in jungle zones in mountain forest ecosystem types and the lowest was found in the core zone of an upper mountain forest ecosystem types. The pattern of distribution plants on average tend to be clumped. Plant species are found grouped into 11 groups of usability. Usefulness of the most widely plant can be utilized is for producing food that is as many as 32 species from 24 families. Advice needs to be done in this study include: rehabilitation of forest areas damaged by the eruption TNGM needs to be done by planting local native species in rehabilitation zone, further research needs to be done after the eruption of an inventory of plants and the manager needs to conduct training activities, counseling and assistance to the people involved in providing useful knowledge about plants in TNGM.
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Judul: Keanekaragaman Tumbuhan Bawah Pasca Erupsi Merapi di Taman Nasional Gunung Merapi, Yogyakarta
Abstrak: The eruption of Merapi Volcano in 2010 caused a great damage to the surrounding ecosystem. The recovery of surrounding ecosystem was done through succesional process. Organisms occur during early succesional stage are understory plants, thus they could be used as indicator of early stage succesion of damaged vegetation in Mount Merapi. The objective of this research was to describe and compare the diversity of understory plants after the eruption of Merapi Volcano in 2010 in Mount Merapi National Park, Sleman Region, Yogyakarta in two locations namely Gandok and Kaliurang Recreational Park. Gandok was categorized as high damaged location, while Kaliurang Recreational Park represented low damaged location. Vegetation was analyzed using quadratic method. Plants sample was identified in laboratory. Vegetation analysis generated the value of Significant Value Index (SVI), Diversity Index (H’), and Similarity Index (IS). Results showed that understory plant diversity of Gandok consist of 74 species and 63 genera, while Kaliurang Recreational Park consist of 49 species and 44 genera. The highest SVI was obtained by Digitaria nuda in Gandok and Brachiaria reptans in Kaliurang Recrational Park. Gandok and Kaliurang Recreational Park have a low similarity of understory community. Both location were categorized in medium diversity level.
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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