Yiyi Sulaeman

Indonesian Agency for Agricultural Research and Development | North Maluku AIAT · Center for Agricultural Technology Assesment and Development

Pada saat ini untuk mendapatkan lahan yang dapat dijadikan sebagai lahan pertanian baru semakin sulit. Untuk mendapatkan areal perluasan baru lahan pertanian dapat diarahkan ke lahan terlantar, salah satu diantaranya adalah tanah pasir/tanah berpasir. Tanah pasir adalah tanah yang penyusunnya sebagian besar berupa bahan tanah berukuran pasir (sand)...

Conversion of tropical peat swamp forests to meet the demand for industrial plantations and agricultural production systems has triggered rapid and substantial carbon loss in the Asia‐Pacific region. Various management practices have been designed to reduce carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) emissions from tropical peat so...

This CSA Country Profile describes the risks posed by climate change to agriculture in Indonesia, discusses the potential of CSA to attenuate those risks, identifies factors that can influence the adoption of CSA practices, and highlights potential entry points for investment in CSA at scale. The report is split into two parts; the National Profile...

Wetland development for food crops relies upon the good management related to the condition of canals, ditches, and water-gate, which determine the crop productivity and prosperity. Abandoned wetlands will created shrubs and bush. Revitalizing abandoned land means rebuilding infrastructure and re-clear wetland and requires valid spatial data to pro...

Digital soil mapping (DSM) has been developed and applied as a cost-effective alternative to conventional mapping. Most DSM studies in predicting soil classes evaluate the accuracy of the digital maps based on the percentage of correctly classified observations over an area or other global statistical measures. There is a lack of local accuracy ass...

Soil survey and mapping in Indonesia uses 3 different soil classification systems simultaneously. These systems are the Soil Taxonomy of the United States Department of Agriculture (ST), World Reference Base (WRB) of the Food and Agriculture Organization, and Indonesian Soil Classification (ISC). The remaining challenge is to harmonize and interpre...

Black soils are dark in color, having soil organic carbon, high base saturation and generally good in soil structure. Having relatively higher soil organic carbon, which is declining due to intensive cultivation, therefore, the conservation and wise use of these soils are of great important. This study aimed to identify spatial distribution of blac...

Abstract: Conservation of water and water level regulation is an important key to successful agricultural development in swampland. Several techniques to create embankments, blocks, and sluices are available and their application in the field is determined by hydrological conditions and characteristics of the area. Elbow Water System Application (T...

The major problem detailing soil map in large tropical country such as Indonesia is high cost and time-consuming. The machine learning technique is one of DSM methodologies that explores spatial patterns to predict soil class and soil attribute. K-nearest neighbours (KNN), random forest (RF) and support vector machine (SVM) are popular for detailin...

The soil science community needs to communicate about soils and the use of soil information to various audiences, especially to the general public and public authorities. In this global review article, we synthesis information pertaining to museums solely dedicated to soils or which contain a permanent exhibition on soils. We identified 38 soil mus...

The area of degreded peatlands in Indonesia is estimated at 4.4 million ha. Currently, the degraded peatland often a source of environmental problems, including sources of greenhouse gas (GHG) emissions and land fires. Restoration of degraded peatlands is intended to restore the value, function and benefits of the peat ecosystem, including efforts...

The soil science community needs to communicate about soils and the use of soil information to various audiences, especially to the general public and public authorities. In this global review article, we synthesis information pertaining to museums solely dedicated to soils or which contain a permanent exhibition on soils. We identified 38 soil mus...

Precision fertilization aims to apply fertilizer according to the nutrient variability of the soil and crop-specific nutrient requirement. Formulating fertilizer recommendations requires laboratory analysis of soil samples, which is expensive, time-consuming, and involves the use of chemical extractants. Near-infrared (NIR) spectroscopy has been re...

p class="Paragraf"> Abstrak. Kini isu ‘skala’ menjadi penting kembali dibahas oleh komunitas sumberdaya lahan. Awalnya sumberdaya lahan terbatas dikaji oleh disiplin ilmu tanah, ilmu geografi, dan ilmu kartografi, tetapi sekarang berkembang dikaji oleh disiplin ilmu lingkungan, ilmu iklim, ilmu statistik, serta ilmu teknologi dan informasi. Kajian...

Global soil science research collaboration is essential to understand soil and its role in global ecosystem functioning. In particular, collaboration between developed and less-developed countries can generate new knowledge and provide capacity building. However, this collaboration is not always equal. ‘Helicopter research’ in soil science describe...

An up to date swampland spatial data in tropic area such as Indonesia based on remote sensing data is important needed for estimating the recent change, especially for agriculture activities. The big problem to acquire remote sensing data in tropic area is cloud cover in almost entire areas. In this study, a base map of swampland map in South Kalim...

Peatlands are globally recognized for their high carbon stock. Worldwide estimates of soil carbon stocks have improved in the last decade due to the availability of large soil datasets and wide application of digital topsoil mapping. However, most mapping studies focus on mineral soils and do not include peatlands, leading to uncertainties in the g...

Peatland mapping is an important national agenda in Indonesia, due to human disturbances and other prominent issues related to conservation and environment. The exposure of mineral soils underlying these peatlands can further increase potential environmental problems when it contains acid sulfate soil (ASSoils - FeS2), harmful mineral when exposed...

Indonesia is the fourth most populated country in the world with an annual population growth rate of 1.3%. This growth is accompanied by an increase in sugar consumption, which is occurring at an annual rate of 4.3%. The huge demand for sugar has created a large gap between sugar production and demand. Indonesia became the world's largest sugar imp...

Crop production needs to double to feed the world’s growing population. Indonesia, as the fourth most populated country in the world, needs to meet its food security challenge with a shrinking arable land area. Indonesia has over 34 million ha of swampland. The scarcity of arable land in Indonesia means wetlands are likely to be converted to agricu...

Legacy soil data have been produced over 70 years in nearly all countries of the world. Unfortunately, data, information and knowledge are still currently fragmented and at risk of getting lost if they remain in a paper format. To process this legacy data into consistent, spatially explicit and continuous global soil information, data are being res...

The '4 per mille Soils for Food Security and Climate' was launched at the COP21 with an aspiration to increase global soil organic matter stocks by 4 per 1000 (or 0.4 %) per year as a compensation for the global emissions of greenhouse gases by anthropogenic sources. This paper surveyed the soil organic carbon (SOC) stock estimates and sequestratio...

The demand for information on functional soil properties is high and has increased over time. This is especially true for soil organic carbon (SOC) in the framework of food security and climate change. The GlobalSoilMap consortium was established in response to such a soaring demand for up-to-date and relevant soil information. The majority of the...

p> Information on the spatial distribution of soil organic carbon content is required for sustainable land management. But, creating this map is time consuming and costly. Digital soil mapping methodology make use legacy soil data to create provisional soil organic carbon map. This map helps soil surveyors in allocating next soil observation. This...

This presentation discuss current status of Indonesian Soil Mapping

Data dan informasi sumberdaya lahan telah banyak disediakan, yang menjadi tantangan adalah mencari cara bagaimana: (i) data dan informasi itu tersedia lestari, diperbaharui secara periodik, serta dapat diakses dengan cepat dan mudah, (ii) masyarakat luas mengetahui keberadaanya dan memahami isinya sesuai dengan keperluannya, (iii) meningkatkan nila...

Peningkatan agroindustri dan peningkatan kedaulatan pangan memerlukan peta kesesuaian lahan untuk identifikasi keperluan teknologi peningkatan produksi dan zonasi prioritas pengembangan komodiyas. Data yang besar perlu diproses untuk memperoleh informasi lahan yang sesuai yang ternyata bisa diselesaikan secara manual namun memerlukan aplikasi khusu...

Data yang disajikan dalam buku ini merupakan data sumber daya lahan Indonesia kondisi terkini yang meliputi luas lahan, sebaran, karakteristik, potensi dan ketersediaan untuk pertanian dan peternakan. Potensi ketersediaan lahan untuk pertanian terdiri atas pangan lahan basah (Padi sawah = PS), tanaman pangan lahan kering (TP), tanaman sayuran datar...

Soil research in Indonesia began in 1817 but officially soils classification research began in 1905. The first soil classification of soils in Indonesia was prepared by E. C. J. Mohr in 1910 at Bodemkundig Instituut. Soils classification is based on the principle of genesis and soils classified are named on the basis of color. This classification w...

Soil and terrain data are basic input for any environmental and ecological modeling, so these data must be available in appropriate format and accepted accuracy. Usually these data are collected during soil survey and soil laboratory analysis although in fact these activities consume much time, labor intensive, and expensive. The digital soil mappi...

This paper discusses the Phosphorus and Potassium Decision Support System (PKDSS) developed by ICALRD and its role in bridging soil database and fertilizer application. This system is a fertilizer recommendation model, as well as a computer program, used as a tool in determining fertilizer requirement for a given crop based on soil testing. In Indo...

The soil system represents the dominant terrestrial reservoir of carbon in the biosphere. Deforestation, poor land management, and excessive cropping lead to a decrease in soil carbon stocks, but intensive cropping can reverse this trend. We discuss long-term soil organic carbon data from two major rice-growing areas: Java (Indonesia) and South Kor...

Information on the spatial variability of soil pH across the landscape is required for many ecological and environmental models. In Indonesia, particularly in Java, such information is the basic input to understand the decline of land productivity due to imbalanced fertilizer application. Creating soil maps using digital techniques has a great pote...

The better recommendation of fertilizer application can be formulated is supported by voluminous, well distributed soil data. Yet, this effort requires much money and consume much time. In the other hand, there is available legacy soil data that can be used to derive soil-landcape model. This model can be used to predict and map soil properties. Th...

Soil legacy data are basic input data for digital soil mapping. Any monitoring of global soil change cannot be successful unless soil data availability and characterization at the national level are well understood. Spatial data infrastructure frequently hampers many developing countries to take advantage of their soil legacy data for digital soil...

Research in the soil of the tropics mostly has demonstrated the decline of soil organic carbon (SOC) after conversion of primary forest to plantation and cultivated lands. This paper illustrates the dynamics of SOC on the island of Java, Indonesia, from 1930 to 2010. We used 2002 soil profile observations containing organic carbon (C) analysis in t...

Digital soil mapping is the creation of a spatial soil information system using field and laboratory observation methods coupled with quantitative spatial prediction techniques. Digital soil mapping follows the advancement in soil and environmental observations using proximal and remote sensing. This paper discusses the methods in digital soil mapp...

This study aimed to build a soil hydraulic properties digital database and to identify predictors for soil water retention of Inceptisols using data from developed database. Soil survey reports were compiled and soil hydraulic properties were entried into a spreadsheet. As many as 230 datasets of Inceptisols were extracted from developed database t...

For supporting better soil management, the spatial distribution of soils having argilic horizon (argilic soils) must be recognized and it can be delineate in soil survey mapping activity, but this activity consumes much time and money. This study aimed to build a decision tree model for predicting the spatial distribution of argillic horizon based...

Soil-landscape model represents both relationships between soil and landform and the relationships between the pattern of soil-landform relationship and processes of pedogeomorphic evolution. This paper aims to get insight about soil-landscape relationships as a basis for soil-landscape modeling with giving emphasis on the methodology and the revie...

Abstrak. Dalam rangka otonomi daerah, pemerintah daerah harus berusaha untuk menggali sumber daya alamnya, termasuk sumber daya tanah dan air untuk pengembangan pertanian. Pertanian umumnya merupakan kegiatan utama masyarakat dalam pengembangan wilayah termasuk di Kawasan Timur Indonesia. Ini berarti perencanaan wilayah dalam rangka pemanfaatan sum...

Legacy soil data is an important data source for digital soil mapping. While it is mostly used to provide the information on spatial distribution of soil, it also allows detecting temporal changes in soil properties. This work attempts to map the spatio-temporal changes in soil organic carbon (SOC) in the island of Java, Indonesia, using legacy soi...