Judul: Estimasi Nilai Ekonomi Penurunan Kualitas Lingkungan Akibat Beroperasinya Tempat Pemprosesan Akhir Sampah Cipayung, Depok
Abstrak: The increasing number of residents has caused a significant impact on the environment. Garbage, as residual of human activity, may become a serious problem within human life. The establishment of Cipayung landfill was an effort to solve the problem of garbage in Depok City. Population growth also led to a growing demand for residential land, due to the limited land, many people build their home on the land that is not for habitation Currently, both of the population and Cipayung landfill are facing a new problem. It is considered that the location of landfill is too close to the residence and causing negative externalities to the population. The impact is perceived by the population due to the operation of Cipayung landfill. This led to a decline in the quality of environment, air pollution, and water pollution are the main environmental impact which perceived by the population around Cipayung landfill. The results of this research show the economic value of environmental degradation around Cipayung landfill with the approaximation methods of cost of illness and replacement cost, by the approximation methods above, it is estimated that the economic value of environmental degradation in administrative regions of Cipayung Village is worth Rp 3.288.269.934 per year which is the sum of the cost of illness which is worth Rp 838.202.184 per year and Rp 2.450.067.750 per year for replacement cost of the drinking water.
Keyword: replacement cost., externalities, cost of illness, Cipayung landfill

Judul: SUSTAINABLE WASTE MANAGEMENT (Case Study: TPA Cipayung, Depok)
Abstrak: Kota Depok merupakan salah satu kota di Provinsi Jawa Barat dengan kepadatan penduduk yang tinggi. Tingkat konsumsi masyarakat perkotaan yang tinggi mengakibatkan volume sampah semakin meningkat, sehingga perlu strategi pengelolaan yang berkelanjutan agar TPA Cipayung dapat mengelola dan mengurangi volume sampah yang ada. Penelitian ini bertujuan untuk menganalisis persepsi masyarakat terhadap pengelolaan sampah di TPA Cipayung menggunakan metode analisis deskriptif dan skala Likert, menghitung estimasi kerugian ekonomi dengan menggunakan replacement cost dan cost of illness, dan menganalisis strategi pengelolaan yang berkelanjutan di TPA Cipayung menggunakan analisis SWOT. Hasil penelitian menunjukkan persepsi masyarakat terhadap pengelolaan sampah di TPA Cipayung dalam aspek ekonomi, sosial, dan lingkungan dinilai positif. Estimasi kerugian dengan rata-rata biaya mengganti air bersih yang dikeluarkan responden mencapai Rp.1.351.273,-/tahun sementara untuk biaya berobat sebesar Rp.60.416,-/tahun. Strategi yang dapat dilakukan oleh TPA Cipayung adalah mengembangkan program tentang pengelolaan sampah yang dilakukan secara berkala., Depok city is one of the most densely populated cities in West Java Province. The high level of consumption of urban residents results in increasing waste volumes. Therefore, a sustainable waste management strategy is needed for the Cipayung Landfill to manage and reduce the existing waste volume. This study aims to analyze public perception of waste management at the Cipayung Landfill using descriptive analysis and Likert scale methods, calculate economic loss estimates using replacement cost and cost of illness, and analyze sustainable waste management strategies at the Cipayung Landfill using SWOT analysis. The results show that public perception of waste management at the Cipayung Landfill in the economic, social, and environmental aspects is assessed positively. The estimated loss with an average cost of replacing clean water spent by respondents reached Rp.1,351,273.-/year while for medical costs it was Rp.60,416.-/year. Strategies that can be taken by the Cipayung Landfill are to develop programs on waste management that are carried out regularly.
Keyword: cost of illness, Likert method, perception, replacement cost, SWOT analysis

Judul: Phylogenetic analysis of subgenus Dieramalpinia (Alpinia carolinensis clade) - Zingiberaceae based on ITS sequences
Abstrak: The most recent infra-generic classification of Alpinia Roxb. by Smith divided the genus into two subgenera (Alpinia and Dieramalpinia) with 11 sections and 12 subsections. One of the sections of Alpinia subgenus Dieramalpinia is Myriocrater which contains about 16 species. The most recent phylogenetic study that included species from Alpinia subgenus Dieramalpinia was done by Kress et al. (2007). They sampled only eight species and found that these were nested within a clade referred to as the Alpinia carolinensis clade. This clade was well supported and may be separated as a genus if sampling more species confirms the result. The objectives of the present project are to compare ITS within one species; to test the monophyly of Alpinia section Myriocrater; to test whether adding more samples still supports the Alpinia carolinensis clade. The present study included thirty-nine samples representing nineteen taxa from Alpinia; seven samples are still unidentified at species level. Sequences of the Internal Transcribed Spacer were used in the analysis. The result showed that ITS sequence of Myriocrater’s species are more conserved than another group in Zingiberaceae. There are base variations within species level. The Alpinia section Myriocrater plus five species from other section is not monophyletic. The Alpinia carolinensis clade still includes three sections of Smith classification (Dieramalpinia, Myriocrater and Pycnanthus) from subgenus Dieramalpinia. Alpinia subgenus Dieramalpinia section Eubractea and one species of section Dieramalpinia are separated into another clade.
Keyword: Alpinia, Myriocrater, Dieramalpinia, Alpinia carolinensis clade