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The home garden "peharangan" in Indonesia is the traditional garden with agroforestry and sustainable land use in the tropical regions. The objective of the present study was to elucidate the effects of urbanization on the performance of the home gardens in West Java, Indonesia.The study sites were ranked into the least urbanized site, the intermediate urbanized site, and the most urbanized site. The performances of the home gardens were compared among these different urbanized sites. The home gardens in the most urbanized sites were derived from the dry land and mixed garden, and those in the least and intermediate urbanized sites had been the home gardens for along time, or were derived from mixed gardens or from rice fields. The area of home gardens tended to decrease due to urbanization, and the shape was restricted to block and strip pattern in the most urbanized sites. The frequencies of front yards were high in all the sites, and side yardstended to decrease due to urbanization, but the back yards were remaining even in the most urbanized sites. From the point of the composition of the elements in the home gardens, it was suggested that properties of the recycling system for agroforestry and the sociality or the public utilization were diminishing in the home gardens due to the urbanization.

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Indonesia has recently been faced with a number of great problems: poverty, natural disasters such as tsunami, earthquakes, flooding and typhoons, volcanic eruptions, loss of biodiversity, decreasing water quality and quantity, increased pollution, and aesthetic degradation of the landscape. These disturbances have been caused by rapid changes in land use and land cover, deforestation, the application of monoculture farming systems in commercial agriculture, urbanization, industrialization, and other types of infrastructure development. The government, urban communities and companies have promoted some programs to ameliorate the problem of environmental degradation. The government has ratified law no. 26/2007 as a commitment to sustainability; this law ensures that cities are obliged to provide green open spaces covering a minimum of 30% of urbanized areas. Many metropolitan cities have feverishly enacted policies to promote greening programs, such as those applied in Jakarta. However, a new town-Sentul City-has engaged in policies that aim to create a well-designed eco-city with urban greenery and ecological networks. This new policy is supposed to herald a better future for urban quality. It is expected that green spaces will provide environmental services: water resource management, biodiversity conservation, carbon sequestration, and landscape beauty.

Betung Kerihun National Park (TNBK) and Danau Sentarum National Park (TNDS) is one of the Conservation District that directly adjacent to neighboring Malaysia and as a form of Transboundary Conservation Area (TBCA) between Indonesia and Malaysia. This national park is also included in the National Tourism Strategic Area (KSPN) and becomes one of the three Destination Management Organization of the Ministry of Tourism of the Republic of Indonesia as well as the National Tourism Destination. Tourism sector, particularly ecotourism can be used as the spearhead and even become a leading sector in increasing the potential of PAD. This study aims to analyze the tourism potential and attractions of attraction in two national parks and determine the feasibility in ecotourism development. This research was using descriptive research, with approach using analysis of tourism potency and object of natural tourist attraction (Obyek Daya Tarik Wisata Alam/ODTWA). The results show that TNBK and TNDS is feasible to be developed as ecotourism destination based on the recapitulation of potential value of objects and natural attractions attraction with a potential value index of 78.20%. Some criteria that require attention and improvement are accessibility and accommodation, so it can be a priority if this national park area developed into ecotourism destination.

Abstract. Ali MS, Arifin HS, Nurhayati. 2021. Urbanization level and its effect on the structure and function of homegarden (pekarangan) vegetation in West Java, Indonesia. Biodiversitas 22: 173-183. Urbanization occurs in West Java Province, Indonesia is currently reducing the ecological value of Indonesian pekarangan or homegardens by decreasing the average area of ​​homegarden and the diversity and abundance of vegetation in them. One study site was in Bogor District, i.e. Selahuni 2, Ciomas Rahayu Village. Four sites in Bogor City, i.e. Sirnagalih-Pagentongan in Loji Village, Tegal Gundil Lama and Tegal Gundil Baru settlements in Tegal Gundil Village, and Baranangsiang Indah Settlement in Katulampa Village. One study site in Cianjur District, i.e. Cibakung Hamlet in Selajambe Village. The objective of this paper is to show the level of urbanization in each area of studies analyzed by Principle Component Analysis (PCA) and the dynamics of homegarden vegetation by comparing data from 1998, 2007, and 2019. The results showed that the levels of urbanization in the six study sites were moderately urbanized and highly urbanized. Homegarden dynamics occurred in the direction of changing homegarden area and the number of species and individuals of plants there. The dynamics of the homegarden due to urbanization have increased the composition of non-ornamental species, mostly fruit plants in all research sites in 2019.

Abstract. Sadikin PN, Arifin HS, Pramudya B, Mulatsih S. 2017. Carrying capacity to preserve biodiversity on ecotourism in Mount Rinjani National Park,. Mount Rinjani National Park (MRNP) in West Nusa Tenggara, Indonesia has applied ecotourism which becomes more popular at international and national level. Yet, the MRNP ecotourism faces various problems such as ecotourism resources damage, erosion, or garbage left by ecotourism activities, etc. This study aims to analyze (i) the land suitability for ecotourism based on criteria of tourism object range, land use and land cover, zone type, biodiversity range, and slope, and (ii) carrying capacity of the ecotourism area, the total number of visitors who can enjoy ecotourism attraction based on activities type, total area, capacity days, and turnover factor. The results of the land suitability for ecotourism analysis show that the MRNP ecotourism has been applied on the suitable land for ecotourism, except in Pelawangan Senaru and at the Peak of Mount Rinjani due to its sensitive and fragile area. The carrying capacity assessment using Douglass formula (1982) has counted the visitors for up to 42.527 visitors per year for camping activity. Generally, this value is under the average actual visitors at present, i.e. 44.112 visitors per year. It means the MRNP ecotourism is already exceeded its carrying capacity.

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