Rachmad Hermawan

The Diversity of Plants for Berangas Materials

Betangas as a culture of the Sintang Malay community is a steam bath that has been done for generations. However, the current knowledge about betangas has not been well documented. This study aimed to determine the utilization of plants as a traditional medicine through betangas by the people of Sintang City. This research used structured interview method with respondent determination by snowball sampling. The results of the study identified 10 species used in betangas. Where 4 out of 10 species have been cultivated by the community to support the sustainability of the betangas plant. Keywords: betangas, plant medicine, traditional spa

Use of Geographical Information System (GIS) and remote sensing in development of urban forest types and shapes in Tangerang Selatan City

The development of a city could create adverse effects, such as increase in air pollutant, and decrease in amenity. One of the ways to overcome these adverse effects is developing urban forest. For maximizing the function of urban forest, the appropriate types of urban forest to be developed, should be determined first. The aims of this study were to determine the appropriate types of urban forest and to identify the shape of urban forest in Tangerang Selatan City by using GIS and remote sensing. Urban forest shape was identified on the basis of shape and distribution of land unit. The steps of the study comprised data collection, map preparation and data analysis. Landsat 8 satellite imagery was interpreted for land use/cover classification. Scoring based on air temperature, land slope, and soil types was used to determine priority of the urban forest locations. Besides that, land use planning was considered to determine the appropriate urban forest type. The results of the study show that the appropriate urban forest types are residential area urban forest, industry urban forest, and recreation urban forest. On the other hand, the appropriate urban forest shapes are strip, scattered, and clustered pattern.

Potensi Serapan Karbondioksida Beberapa Jenis Daun Tanaman Di Jalur Hijau Jalan Raya Pajajaran, Bogor

Peningkatan konsentrasi CO2 secara efektif dapat dikendalikan dengan pembangunan hutan kota melalui pemilihan jenis tanaman perkotaan yang memiliki potensi serapan CO2 tinggi. Penelitian ini bertujuan untuk mendapatkan data potensi serapan CO2 oleh daun pada sembilan jenis tanaman di jalur hijau Jalan Pajajaran, Bogor. Data primer dikumpulkan melalui survei lapangan dan analisis laboratorium sampel daun menggunakan metode karbohidrat. Studi kasus dan literatur untuk memperoleh data sekunder dari instansi atau literatur terkait, khususnya hasil studi dengan kasus serupa. Data lain yang dikumpulkan terdiri atas jumlah dan luas daun. Hasil analisis menunjukkan C. manghas memiliki potensi serapan CO2 per daun tanaman paling tinggi yaitu sebesar 11,86 ton/daun/tahun. Selain itu, F. elastica dan S. macrophylla juga memiliki nilai serapan CO2 yang relatif baik dibandingkan jenis tanaman lain yaitu masing-masing sebesar 3,83 ton/daun/tahun dan 2,51 ton/daun/tahun. Adapun faktor inheren tanaman yang menentukan besarnya potensi serapan CO2 adalah luas daun, ketebalan daun, kehijauan daun, jumlah daun dan kadar air. Sedangkan faktor luar (eksternal) antara lain tempat hidup tanaman, ketersediaan air dan hara mineral, serta pengaruh cahaya dan suhu.

HUJAN ASAM PADA BEBERAPA PENGGUNAAN LAHAN DI KABUPATEN DAN KOTA BOGOR (Acid Rain on Several Landuses in Bogor Regency and City)

This paper reviews potential causes of amphibian population declines in Indonesia in relation to global amphibian declines. At least six factors were identified: over-harvesting, loss of forest and wetland habitats, pollution, disease, introduction of exotic species and deformities. The conservation of Indonesian amphibian faces many challenges, among other the low perception and knowledge about amphibian among general public, also low number and low quality of local herpetologist . Key word: global amphibian declines; amphibian; frog; Indonesia