Widiatmaka Widiatmaka

Bogor Agricultural University | IPB · Department of Soil Science and Land Resources

Indonesian food production depends highly on Java Island, which holds the most fertile soils in the country but had limited area. The objective of the research was to analyse the availability of suitable land for agriculture in Tuban Regency, an agricultural regency in Java Island. Land suitability was evaluated with spatial multicriteria analysis,...

In Indonesia, Java Island still contributes a large amount of the total number of vegetables produced. In this tropical country, vegetables are produced in two different agro-ecological conditions, which are high altitude and low altitude. The rapidly increasing population growth has caused the centre’s production of high altitude vegetables on Jav...

The hinterland of Jakarta has experienced high pressure in its land utilization due to Jakarta’s rapid development. The objective of this research was to analyse the suitable land available for agriculture. The research was conducted in Bogor, a hinterland regency of Jakarta. The methodology used includes two steps of analysis, which are land suita...

Commodity development requires site selection which should be established prior to large scale development. The land suitability criteria for cashew are not presently available. The relationship between the biophysical aspects, especially land and soil with commodity productivity, is also not known in depth. The objective of this study is to establ...

One of the agricultural public commodities in Indonesia which still can not fulfill the domestic consumption needs is soybean. The objectives of this research were: (i) to identify the suitable area for soybean plantation in paddy fields, (ii) to assess the development of soybeans in land use and socio-economic context, and (iii) to plan the spatia...

p>Vegetation can be an important indicator of ecosystem change, the influence of anthropogenic and non-anthropogenic factors. Therefore, it is important to study the dynamics of vegetation changes. One technique that can be used for vegetation analysis is the Normalized Difference Vegetation Index (NDVI). NDVI is an indicator of the active biomass...

The new aerotropolis era due to airport construction in Kulon Progo has stimulated regional development and changed the image of the area from rural to urban-oriented. The negative impact of rapid growth, such as the urban sprawl, can be mitigated through sustainable spatial planning. Therefore, this study aims to evaluate the carrying capacity bas...

Water productivity is related to nutrient availability. One of the factors related to nutrient availability is a chlorophyll-a concentration in these waters. This study analyses the relationship between chlorophyll-a concentration and nutrient content in Tarakan Island waters. The water samples taking on 18 points of observation locations used a wa...

The complexity of regional disparity has encouraged viewing this issue from various perspectives, one of which is the role of physical geography in disparity. On Java Island, an observation on the role of geographical aspect is needed due to the spatial sturdiness of disparity. This study aims to provide quantitative proof that differences in the p...

Red mud storage is associated with an increased risk of dam failure and there is an urgent need to address the environmental problem caused by the very fine particle size (average 4.9 µm) of red mud with high alkalinity (pH = 10–12.5) in the alumina industry. The specific objective of this study was to investigate the use of red mud based on the “s...

Banjir merupakan salah satu bencana alam yang sering terjadi di seluruh dunia, menyebabkan kerugian ekonomi, rusaknya infrastruktur bahkan sering menimbulkan korban nyawa. Oleh karena itu, mengatasi permasalahan banjir sangat penting untuk dilakukan. Tujuan makalah ini adalah untuk mensintesis permasalahan banjir dan menyusun kerangka kerja pengelo...

Banjir merupakan salah satu bencana alam yang sering terjadi di seluruh dunia, menyebabkan kerugian ekonomi, rusaknya infrastruktur bahkan sering menimbulkan korban nyawa. Oleh karena itu, mengatasi permasalahan banjir sangat penting untuk dilakukan. Tujuan makalah ini adalah untuk mensintesis permasalahan banjir dan menyusun kerangka kerja pengelo...

This study aims to spatially analyze the suitability and availability of land for annual tropical fruit horticultural commodities using the criterion-weighted method. The highlands of Banjarnegara and Wonosobo Regencies, Central Java Province, Indonesia, with a total area of 93,955.60 hectares was used as the study area. The multi-criteria decision...

Google Earth Engine (GEE) merupakan layanan pemrosesan geospasial yang telah banyak digunakan di berbagai bidang pemetaan. Tujuan penelitian ini adalah identifikasi perubahan lahan sawah Kabupaten Sukabumi menggunakan GEE. Data citra landsat 5 dan landsat 8 yang digunakan di GEE merupakan data citra yang telah di pre-process dan terkoreksi. Klasifi...

Stingless bees are social bees distributed in Indonesia, including West Halmahera. However, they are not widely known for their value for human health, their role as pollinators, and how to cultivate them. West Halmahera has potencies to develop stingless bees due to its supportive agricultural environment. The aims of this research were to know th...

The settlement growth is potentially increased by the rural-to-urban perspective change due to the new era of aerotropolis in Kulon Progo. Land-use planning evaluation is required, especially settlement, which has a significant impact on the environment. However, land-use evaluation studies are currently focused on conforming analysis of official l...

Survei keragaman lebah propolis, preferensi bersarang, dan tanaman sumber pakannya dilakukan di Kabupaten Halmahera Barat pada 134 lokasi. Penelitian ini bertujuan untuk mengetahui keragaman spesies, pemilihan tempat bersarang dan habitatnya, dan jenis tanaman pakan dominan. Ditemukan tiga jenis lebah propolis, dan spesies yang paling banyak ditemu...

Lamongan Regency is one of Indonesia’s regencies in Indonesia that contribute to the country’s sugarcane and sugar production. Land-use/land-cover changes (LULC) have happened in various areas, including Lamongan Regency in East Java, Indonesia. This study aimed to analyze the impact of land-use/land-cover change (LULCC) in 2007–2031 on the sugar b...

S urvey of stingless bee diversity, nesting preferences, and forage plants was conducted in West Halmahera across 134 collection sites. This research was aimed to determine species diversity, nesting preference and habitat, and domin a nt for a ge pl a nts. There were three species found, the most common species being Tetragonula clypearis (Friese)...

A merging of Jakarta and Bandung metropolitans influence the development of the areas around them. Consequently, people are migrating to the cities caused an increasing population. It leads to experiencing uncontrolled advancement and arising problems. One of them is the raising land demand for settlement development, but the land is limited. There...

Tarakan dry seaweed production increased during 2012-2018 for the cultivation of Kappaphycus alvarezii with the longline planting method. This study aims to assess the quality of the waters and their suitability for seaweed cultivation on the coast of Tarakan Island. The environmental parameters of water quality measured were chlorophyll-a, water t...

Article history: The absence of a landfill has increased the illegal waste disposal sites in Malaka Regency, which was established between 2013 and 2021. Therefore, this study aimed to analyze suitable and available land for the development of a landfill. The methodology used consisted of 2 analysis steps, namely land suitability and land availabil...

Settlements are indispensable to humans as a place of residence and for other activities. Moreover, there is an increase in land requirements for settlement construction due to the high population. The development of cities and settlements in the context of SDGs needs consideration to mitigate, adapt to climate change, and resist disasters. Therefo...

Spatial Planning (RTRW) is a policy direction and strategy for using regional space used as a reference by the Governments. Inconsistencies often occur between current land use (LU) and spatial planning. The research focus is a similar land use in villages/ kelurahan on the border of the two regions. Similar land use is essential to compare inconsi...

Built-up is artificial land use representing urban-oriented activities according to the sector developed in the aerotropolis, the development concept of city activity centered on the globally networked economy’s airport. The growth of unplanned built-up often caused environmental deterioration. Therefore, the impact of the emerging of a new growth...

Gunung Batu Arboretum is part of the nature conservation area in Bogor City, West Java, Indonesia. It holds an essential role in supporting conservation effort activities through ex-situ of various trees species. Land biophysical research been carried out aimed at protecting the role of the Arboretum, which supports the growth of various plant coll...

The Subwatershed of Musi Hulu plays an important role in Bengkulu Province and the South Sumatra region. In 2006, the establishment of the Musi Hydropower Plant increases the functional load of the area hence, there is a need for sustainable land resources management. Therefore, this study aims to identify the key factors that affect sustainable la...

West Kalimantan is a bauxite-rich province with the world’s sixth-largest bauxite reserve. However, Indonesia experienced a bauxite, alumina, and aluminum import vs. export deficit (2018-2020), with imports exceeding exports in value. Based on the calculation of qualitative data envelopment analysis, this case study provides a solution through benc...

The highlands in Central Java have a major contribution to meet the national demand for vegetables. However, competition for these lands by non-agricultural sectors or for the production of other agricultural commodities could lead to a decline in vegetable production. The research aimed to spatially analyze the land suitability and availability fo...

Pandeglang Regency is designated as the agricultural center of Banten Province. Dedicating a specific area to a protected agricultural area often faces problems of not considering the population growth and food needs. Therefore, this research aims to evaluate the spatial pattern and allocation of the agricultural area based on the comparison betwee...

The population growth has led to a significant increase in the amount of waste every year. Meanwhile, several demographic factors influencing waste generation in Malaka Regency include an absence of a final landfill. This has caused the illegal dumping of waste which leads to various environmental problems. Therefore, this study aims to (I) analyze...

Sugar imports are carried out every year in Indonesia to meet domestic needs. The average sugar imports from 2015 to 2019 reached 4.34 million tons. The Spatial Plan of Lamongan Regency 2011-2031 proclaims the development of sugarcane plantations, but the priority assessment of the development area which takes into account the balance of sugarcane...

Demand for land use can cause an undesirable impact. Bali Island has been exploited as the midpoint of tourism activities and altering land use over the last two decades. Badung regency is the hinterland area of Denpasar City, the capital city of Bali Province. Land conversion in Badung was caused by the construction infrastructures related to tour...

Climate is the crucial determining component in defining the land suitability class for paddy. The paddy suitability class is expected to decrease as a result of global climate change. This study analyzed land suitability for paddy based on the Representative Concentration Pathways (RCP) 4.5 climate projection scenario of Sukabumi Regency in 2020 a...

The Brain Gain Actors Adaptability in Horticultural Farming in The Dieng Highlands, Banjarnegara Districts. The number of farmers in Indonesia is decreasing while the regeneration of young farmers has not optimally contributed. The return of educated and skilled personnel to rural areas called brain gain is a potential approach for regenerating the...

The volume of Indonesia's sugar imports in 2019 reached 4,09 million tons. The high volume of imports was influenced by the decreasing area of sugarcane plantations. Lamongan Regency is one of the sugarcane and sugar-producing regencies in East Java. Sugarcane and sugar production in Lamongan Regency has experienced quite diverse dynamics and has b...

Land degradation (LD) is an important issue worldwide because it affects food production and people’s welfare. Many factors cause land degradation, but in humid tropical areas, erosion is the main factor. More than 100 countries including Indonesia are affected by LD. Watershed management should be prioritized owing to budget constraints, while on...

Plankton is a biota community that is able to adapt and serve as natural food for fish. This study aims to analyze the structure of the plankton community and its spatial distribution so that this research can be used as information for swamp aquaculture. This research was conducted in July and August 2019. Sampling was done at ten stations by cons...

Peningkatan jumlah penduduk terjadi di Indonesia setiap tahunnya. Hal ini mengakibatkan tingginya kebutuhan akan ruang. Kabupaten Indramayu merupakan salah satu kabupaten dengan dinamika penggunaan dan tutupan lahan yang tinggi yang ditunjukkan peningkatan luas pemukiman sebesar 14.8 ha tahun-1 dan sawah yang mengalami penurunan rata-rata sebesar 1...

Community forest plants can be an alternative fulfillment of raw material for the timber industry. While Sukabumi Regency is region with the largest area in West Java Province, so it the potential for development of community forest plants. This study wants to find the availability of land for development community forest plants, analyzing the suit...

Potensi lahan yang terbatas menyebabkan terjadinya permasalahan pada lahan, yang kemudian mengarah pada permasalahan perkembangan wilayah. Terutama pada perkembangan permukiman. Sementara itu, Pertumbuhan penduduk yang meningkat berbanding terbalik dengan ketersediaan lahan. Situasi tersebut umum terjadi di berbagai wilayah, begitu juga di Kabupate...

The development of Oil Palm Plantations (OPP) in Indonesia faces problems related to land availability and environmental damage. Changes in the hydrological conditions of The Lalindu Watershed in Konawe Utara Regency are caused by the reduction in the extent of forest cover in the river border areas as OPP increase. The purpose of this study is to...

Indonesia already has regulations on oil palm plantations that try to maintain good ecosystem services. The regulations are contained in ISPO. However, this regulation has not been fully implemented in oil palm plantations in Sei Jentikar sub-watershed. In this paper, we identify land cover and model N and P nutrient retention in oil palm plantatio...

One of the main sources of greenhouse gases (GHGs) emissions is CO2 from peat decomposition. Land management, especially drainage, can trigger decomposition, causing carbon content depletion in peat soils. In this study, carbon dynamic was evaluated under various land uses of the peatland in Kampar Peninsula, Riau, Indonesia. Secondary data from 20...

The cultivation of Alabio ducks (Anas Platyrynchos Borneo) so far is still natural and only involves one parameter; furthermore, each location has different characteristics. The hierarchical structure constructed has a ranking of importance as an alternative option for ducks' development in peatland ecosystems. This research aims to formulate a str...

As population size grows over time, staple food production also needs to keep up with increased annual demands. In Indonesia, the agricultural sector applies intensification and extensification to maximize rice productivity. However, farm extensification can instead decline productivity, should it sprawl into marginal lands like the study area that...

This research was conducted to review land use land cover change in the catchment area of Musi Hydropower Plant in Bengkulu Province. The data used in this research is land use land cover map year 2000 to 2018 from Ministry of Environment and Forestry of the Republic of Indonesia. The analyse was done by overlaying time series map of land use land...

Mount Gede Pangrango National Park is the example of a protected area in which land conflict happens. The surrounding communities run their cultivation activities inside the national park which are actually illegal according to the law. This research aims to capture the progress of conservation efforts vis-a-vis such an encroachment issue as well a...

Kawasan wisata alam Pantai Panjang di Kota Bengkulu merupakan alternatif wisata alam yang sering dikunjungi wisatawan, namun tidak dikelola dengan maksimal sehingga menimbulkan permasalahan baik lingkungan, sosial, ekonomi maupun kelembagaan. Aspek kelembagaan dan kesesuaian lahan menjadi isu utama dalam pengelolaan kawasan ini sehingga diperlukan...

Land use/cover is one of the important factors in land management. The land use/cover changes can affect the policy in an area. Land use/cover in South Lampung Regency is potentially changed because of economic, social, and populations aspect. This research aimed to analyze the spatial change of land use/cover in the South Lampung Regency period 20...

Along with the development of Batu City as a tourist city, it is feared that there will be an increase in land use conversion from apple orchards and other agricultural land into residential and tourism land. The rate of land use change must be controlled to maintain environment sustainability. One of the effort is studying the change that occurred...

River estuary is a part of the estuary ecosystem which includes semi-closed waters affected by the tidal processes and receives fresh water flow from the mainland. This study aimed to analyze the river water quality as source water for tiger shrimp (Penaeus monodon) farming in the ponds in the Bulungan Regency, Indonesia. This research used a quant...

Yunandar, Effendi H, Widiatmaka, Setiawan Y. 2020. Plankton biodiversity in various typologies of inundation in Paminggir peatland, South Kalimantan, Indonesia on dry season. Biodiversitas 21: 1012-1019. The aim of the study was to analyze the typology of inundation areas and plankton biodiversity in Paminggir peatland, South Borneo, Indonesia. Typ...

Studi ini menganalisis keberlanjutan angkutan umum penumpang dengan studi kasus di Kota Bogor. Tujuan studi ini adalah untuk menilai kondisi saat ini tingkat keberlanjutan angkutan umum penumpang berdasarkan dimensi ekonomi, sosial, lingkungan, dan kinerja pelayanan angkutan umum serta untuk mendapatkan atribut-atribut pengungkit (leverage attribut...

Sustainable peatland management is expected to become the mainstream in utilizing the environmentally fragile tropical peatland. The aim of the study was to evaluate the dynamics of tropical peat characteristics and sustainability resulted from management and land use types. This study was conducted in 2013-2018 in the peat dome of the Kampar Penin...

This study examined the potential of brain gain as an alternative approach to regenerating the agricultural sector, based on the potential actors, obstacles, influencing factors and stakeholder analysis. The methodology used includes a literature review and statistical research, and the primary data were derived from brain gain actors. In addition,...

Local government has the authority for policy on resource management, but in spatial terms its authority is not absolute, because it must follow the stages of spatial plans. Local government has made considerable efforts to create a safe, comfortable, productive and sustainable regional space by optimizing the performance of leading sectors as the...

Gorontalo Regency has the largest paddy field area in Gorontalo Province. But until now paddy fields in Gorontalo Regency continue to experience conversion. Protection of paddy fields is very important so that the rice needs are still fulfilled so as to realize food sovereignty. The objective of this research is to compile the spatial model of padd...

Cirebon Regency, which is one of rice production centers in West Java Province, has experienced the conversion of paddy fields to non-agricultural land. The conversion caused the decline in rice production, which automatically reduces its contribution to West Java Province. The objective of this research is to build a paddy food sufficiency model a...

Abstract. Change of land use and land cover caused by population growth and accesbility to transportation will decrease land availability for different use as well as land quality. Statistical data in DKI Jakarta Province shows that population growth in 2016 is 1,07%, this population growth is less than population growth during 2000 – 2010. This po...