A5024302932- Oil Palm Production and Sustainability
- Plant Water Relations and Carbon Dynamics
- Remote Sensing in Agriculture
- Forest Ecology and Conservation
- Plant Growth and Agriculture Techniques
- Geological and Geophysical Studies
- Fire effects on ecosystems
- Agricultural Development and Management
- Plant responses to elevated CO2
- Climate variability and models
- Conservation, Biodiversity, and Resource Management
- Peatlands and Wetlands Ecology
- Forest ecology and management
- Biofuel production and bioconversion
- Water and Land Management
- Aeolian processes and effects
- Climate change impacts on agriculture
- Coffee research and impacts
- Agricultural Research and Practices
- Data Mining and Machine Learning Applications
- Photosynthetic Processes and Mechanisms
- Rice Cultivation and Yield Improvement
- Management and Optimization Techniques
- Cocoa and Sweet Potato Agronomy
- Agricultural and Environmental Management
IPB University
2015-2024
Institut Polytechnique de Bordeaux
2017
Meteorological, Climatological, And Geophysical Agency
2012-2013
University of Göttingen
2009
SEAMEO Regional Center for Food and Nutrition
2004-2008
Australian National University
2004
Abstract Tropical peatlands, which coexist with swamp forests, have accumulated vast amounts of carbon as soil organic matter. Since the 1970s, however, deforestation and drainage progressed on an enormous scale. In addition, El Niño Southern Oscillation (ENSO) drought large‐scale fires, grow larger under condition, are accelerating peatland devastation. That devastation enhances decomposition matter increases release to atmosphere CO 2 . This phenomenon suggests that tropical peatlands...
The temperature response of Jmax, the irradiance-saturated potential rate photosynthetic electron transport in absence Rubisco limitation, has usually been modelled by a complicated, modified Arrhenius type equation. Light saturation can be difficult to achieve and reduces precision fluorescence measurements. Consequently, we calculated at 1200 μmol photosynthetically active radiation (PAR) quanta m-2 s-1 from chlorophyll measurements on intact soybean leaves [Glycine max (L.) Merr] as...
The potential of palm-oil biofuels to reduce greenhouse gas (GHG) emissions compared with fossil fuels is increasingly questioned. So far, no measurement-based GHG budgets were available, and plantation age was ignored in Life Cycle Analyses (LCA). Here, we conduct LCA based on measured CO2, CH4 N2O fluxes young mature Indonesian oil palm plantations. CO2 dominates the on-site budgets. a carbon source (1012 ± 51 gC m-2 yr-1), sink (-754 38 yr-1). considering shows higher for biodiesel than...
Abstract. Indonesia is currently one of the regions with highest transformation rate land surface worldwide related to expansion oil palm plantations and other cash crops replacing forests on large scales. Land cover changes, which modify properties, have a direct effect temperature (LST), key driver for many ecological functions. Despite historic in toward governmental plans future expansion, this first study so far quantify impacts LST Indonesia. We analyze from thermal band Landsat image...
Photosynthetically active radiation (Q)-use efficiency (ɛ) is an important parameter for deriving carbon fluxes between forest canopies and the atmosphere from meteorological ground remote sensing data. A common approach to assume gross primary production (Pg) net (Pn) are proportional Q absorbed by vegetation (Qabs) defining proportionality constants ɛPg ɛPn (for Pg Pn, respectively). Although climate monitoring provide Qabs other data at global scale, information on ɛ particularly scarce...
Occurrence of drought is a slow process lasted for long time until the rainy season come. This natural disaster has broad and severe impact. research was conducted to examine level severity intensity in Java, Bali Nusa Tenggara using Standardized Precipitation Evapotranspiration Index (SPEI). SPEI index used quantifying occurrence, can be analyze duration, intensity. Drought climatological phenomenon which difficult how determine its onset, magnitude, intensity, spatial extent, etc....
Upwelling events analysis in southern coast of Java and Banda sea were conducted. The identified by using satellite data i.e. wind surface, Sea Surface Temperature (SST) ocean color during period 14 years (2002-2016) which calculated Ekman pumping transport. It’s found that velocity reached a maximum June-July-August (JJA) approximately 3,65x10 -6 . Comparing with transport, makes an even greater contribution to the local upwelling Sea. 4,9x10 -1 ms transport equal coastal Java. That’s...
Abstract. The El Niño–Southern Oscillation (ENSO) in 2015 was one of the strongest observed almost 20 years and set stage for a severe drought emergence widespread fires related smoke emission over large parts Southeast Asia. In tropical lowlands Sumatra, which were heavily affected by haze, areas rainforest have been converted into oil palm (Elaeis guineensis Jacq.) plantations during past decades. this study, we investigate impact haze on net ecosystem CO2 exchange, evapotranspiration,...
Abstract. The possible impact of El Niño–Southern Oscillation (ENSO) events on the main components CO2 and H2O fluxes between tropical rainforest atmosphere is investigated. were continuously measured in an old-growth mountainous Central Sulawesi Indonesia using eddy covariance method for period from January 2004 to June 2008. During this period, two episodes Niño one episode La Niña observed. All these ENSO had moderate intensity central Pacific type. temporal variability analysis...
<p><strong>Abstrak</strong>. Rendahnya produktivitas kopi merupakan salah satu permasalahan utama dalam sistem produksi Indonesia. Hal ini diantaranya disebabkan tidak adanya perawatan yang optimal dengan memperhatikan fase fenologi kopi, serta dampak variabilitas dan perubahan iklim. Berbagai teknologi adaptasi sudah banyak dihasilkan namun langkah memanfaatkan prakiraan iklim bentuk penyesuian kegiatan budidaya atau disebut sebagai kalender belum dikembangkan. Tulisan...
Abstract Deforestation and agricultural expansion in the tropics affect local regional climatic conditions, leading to synergistic negative impacts on land ecosystems. Climatic changes manifest increased inter‐ intraseasonal variations frequency of extreme events (i.e., droughts floods), which have evident consequences for aboveground biodiversity. However, until today, there been no studies how use affects seasonal below ground tropical ecosystems, may be more buffered against variation....
Oil palm plantations are expanding vastly in Jambi, resulted altered surface roughness and turbulence characteristics, which may influence exchange of heat mass.Micrometeorological measurements above oil canopy were conducted for the period 2013-2015.The palms 12.5 years old, height 13 meters 1.5 old 2.5 m.We analyzed strenght on (sensible latent) fluxes by investigating profiles gradient wind speed, temperature, (roughness length, zo, zero plane displacement, d), friction velocity u*.Fluxes...
This study aims to analyze the institutional capacity building of Lore Lindu National Park, determine objective mechanisms and constraints for development design alternative designs LLNP institution. The research data were obtained by conducting interviews, observation, focus group discussions using Structural Interpretation Modeling analysis technique used formulate alternatives in future. results show that key element Park management program is Hall, which a sub-driving at first level...
Penggunaan data global makin meningkat dalam mengatasi permasalahan ketersedian curah hujan observasi. Salah satu yang sering digunakan yaitu Climate Hazards Group InfraRed Precipitation with Station (CHIRPS). Namun demikian, CHIRPS tidak bebas dari bias, sehingga perlu divalidasi dan dikoreksi dengan menggunakan observasi hasil pengamatan di lapangan. Penelitian ini bertujuan untuk mengidentifikasi metode koreksi bias memberikan performa paling baik memperbaiki inkonsistensi terhadap...
Abstract. For the assessment of evapotranspiration, near-surface airborne thermography offers new opportunities for studies with high numbers spatial replicates and in a fine resolution. We tested drone-based subsequent application DATTUTDUT energy balance model using widely accepted eddy covariance technique as reference method. The study site was mature oil palm plantation lowland Sumatra, Indonesia. 61 flight missions, latent heat flux estimates (Deriving Atmosphere Turbulent Transport...
Abstract Lore Lindu National Park or Taman Nasional (TNLL) is a natural resource conservation area with various potentials of endemic flora and fauna diversity. This study aimed to estimate the value spatial distribution biophysical factors, energy flux, evapotranspiration. method used Surface Energy Balance Algorithm for Land (SEBAL) model performs pessimistic, moderate, optimistic scenarios. The number measured parameters includes variables flux variables. results showed that average...
Abstrak. Padi, jagung, kedelai dan bawang merah merupakan komoditas pangan unggulan di Indonesia. Jagung umumnya ditanam sesudah padi atau lahan sawah tadah hujan sehingga rentan terhadap kekeringan. Oleh sebab itu informasi iklim khususnya curah suhu sangat penting dalam menentukan waktu tanam kebutuhan air yang tepat bagi tananam. Tujuan penelitian adalah tanaman padi, kedelai, berdasarkan analisis neraca tanaman, serta menyusun peta dua provinsi sentra produksi Indonesia yaitu Jawa Barat...
ABSTRAK P eningkatan aktivitas industri dan transportasi menjadi pemicu timbulnya potensi pencemaran udara yang berdampak pada kesehatan masyarakat, terutama di sekitar wilayah kota-kota besar . Pengenalan daerah rawan terhadap pemaparan konsentrasi pencemar maksimum perlu dilakukan untuk mengantisipasi dampak masyarakat lingkungan. Studi ini bertujuan menganalisis sebaran menentukan lokasi berpotensi terpapar dengan maksimum, khususnya partikulat (dalam hal PM 10 ) sulfurdioksida ( SO 2...
Rubber plantations are an economically viable land-use type that occupies large swathes of land in Southeast Asia have undergone conversion from native forest to intensive plantation forestry. Such change has a strong impact on carbon, energy, and water fluxes ecosystems, uncertainties exist the modeling future impacts these due scarcity measured data poor representation key biogeochemical processes. In this current effort, we utilized Community Land Model Version 5 (CLM5) simulate rubber...
This study aims to analyze the impact of climate change on suitability Robusta coffee in five main Indonesian production centers namely Aceh, North Sumatera, South Bengkulu and Lampung using Maxent approach. The used data, projections from Worldclim location data maps Indonesia's agricultural commodities. results showed that had good performance modeling climatic at provincial level, corresponding areas shifted with different patterns between provinces. suitable highly climates for were...
In tall vegetation canopies, calm weather conditions may result in the formation of an isolated below-canopy air layer. Especially during night, carbon dioxide (CO2) fluxes be concealed from above-canopy eddy covariance (EC) measurements, masking magnitude CO2 net ecosystem exchange (NEE). Particular attention to this "nighttime problem" needs paid oil palm (Elaeis guineensis Jacq.) plantations, which can form a dense top canopy and are grown tropical regions where wind speeds often low....
Rapid conversion of tropical rainforests to agricultural land-use types occurs throughout Indonesia and South-East Asia. We hypothesize that these changes in affect the turbulent heat exchange processes between vegetation atmosphere, radiative properties surface, therefore, induce an impact on local climate water flows. As part international research project (SFB 552, Stability Rainforest Margins Indonesia, STORMA) fluxes over a cacao agroforestry system (AFS) were investigated, using eddy...