Akas pinaringan Sujalu

@untag-smd.ac.id

Agrotechnology/Agriculture
universitas 17 agustus 1945 samarinda

Akas pinaringan Sujalu


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EDUCATION

Geofisich and Meteology-IPB (graduate)
Forestry (Magister and Doctoral)

RESEARCH INTERESTS

Agriculture, climate, biodiversity (ephiphyte), water management
9

Scopus Publications

906

Scholar Citations

13

Scholar h-index

17

Scholar i10-index

Scopus Publications

  • Characteristics of Mesoscale Convective Systems and Their Impact on Heavy Rainfall in Indonesia’s New Capital City, Nusantara, in March 2022
    Eddy Hermawan, Risyanto Risyanto, Anis Purwaningsih, Dian Nur Ratri, Ainur Ridho, Teguh Harjana, Dita Fatria Andarini, Haries Satyawardhana, Akas Pinaringan Sujalu
    Advances in Atmospheric Sciences, 2025
    Nusantara, the new capital city of Indonesia, and its surrounding areas experienced intense heavy rainfall on 15–16 March 2022, leading to devastating and widespread flooding. However, the factors triggering such intense heavy rainfall and the underlying physical mechanisms are still not fully understood. Using high-resolution GSMaP (Global Satellite Mapping of Precipitation) data, we show that a mesoscale convective system (MCS) was the primary cause of the heavy rainfall event. The rainfall peak occurred during the MCS’s mature stage at 1800 UTC 15 March 2022, and diminished as it entered the dissipation stage. To understand the large-scale environmental factors affecting the MCS event, we analyzed contributions from the MJO, equatorial waves, and low-frequency variability to column water vapor and moisture flux convergence. Results indicate a substantial influence of the MJO and equatorial waves on lower-level (boundary layer) meridional moisture flux convergence during the pre-MCS stage and initiation, with their contributions accounting for up to 80% during the growth phase. Moreover, while La Niña and the Asian monsoon had negligible impacts on MCS moisture supply, we find a large contribution from the residual term of the water vapour budget during the maturation and decay phases of the MCS. This suggests that local forcing (such as small-scale convection, local evaporation, land-surface feedback, and topography) also contributed to modulation of the intensity and duration of the MCS. The results of this study can help in our understanding of the potential causes of extreme rainfall in Nusantara and could be leveraged to improve rainstorm forecasting and risk management across the region in the future.
  • Analysis of Rainfall Characteristics of East Kalimantan Province
    Zuhdi Yahya, Puji Astuti, Zikri Azham, Maya Preva Biantary, Lisa Astria Milasari, Akas Pinaringan Sujalu
    Environmental Science and Engineering, 2023
  • Epiphytic Host Tree Identification In Samarinda Botanical Garden
    Z Yahya, A P Sujalu, L Kamarubayana, H Emawati, M Napitupulu, Ismail ismail, Noor Jannah
    Iop Conference Series Earth and Environmental Science, 2023
    Epiphytes are one of the most diversiform plants, which its species richness peak in the tropic and subtropics. The objective of this study is to explore the different types of phorophyte. This research used the single plot method, as many as 100 plots, each measuring 10m x 10m, randomly distributed in Main Protected Zone of the Samarinda Botanical Garden. In each plot, the following data recorded the species name and individual numbers of phorophytes. The phorophyte in the old secondary forest area to the amount of 66 trees are consisting of 30 species of 29 families. The number of phorophytes is mostly in the diameter class between 21-38 cm. The Family of Dipterocarpaceae and species of Borassodendron borneensios, being the phorophyte which has got the most one in which each 8 species and 9 trees are existed in the forest.
  • Meteorological Factors Influencing Coastal Flooding in Semarang, Central Java, Indonesia, on 23 May 2022
    Teguh Harjana, Eddy Hermawan, Risyanto, Anis Purwaningsih, Dita Fatria Andarini, Ainur Ridho, Dian Nur Ratri, Akas Pinaringan Sujalu
    Springer Proceedings in Physics, 2023
  • Moisture Origin and Transport for Extreme Precipitation over Indonesia’s New Capital City, Nusantara in August 2021
    Anis Purwaningsih, Sandro W. Lubis, Eddy Hermawan, Dita Fatria Andarini, Teguh Harjana, Dian Nur Ratri, Ainur Ridho, Risyanto, Akas Pinaringan Sujalu
    Atmosphere, 2022
    Nusantara, Indonesia’s new capital city, experienced a rare extreme rainfall event on 27–28 August 2021. This heavy rainfall occurred in August, the driest month of the year based on the monthly climatology data, and caused severe flooding and landslides. To better understand the underlying mechanisms for such extreme precipitation events, we investigated the moisture sources and transport processes using the Lagrangian model HYSPLIT. Our findings revealed that moisture was mostly transported to Nusantara along three major routes: from Borneo Island (BRN, 53.73%), the Banda Sea and its surroundings (BSS, 32.03%), and Sulawesi Island (SUL, 9.05%). Overall, BRN and SUL were the main sources of terrestrial moisture, whereas the BSS was the main oceanic moisture source, having a lower contribution than its terrestrial counterpart. The terrestrial moisture transport from BRN was mainly driven by the large-scale high vortex flow, whereas the moisture transport from the SUL was driven by the circulation induced by boreal summer intraseasonal oscillation (BSISO) and low-frequency variability associated with La Niña. The near-surface oceanic moisture transport from BSS is primarily associated with prevailing winds due to the Australian monsoon system. These insights into moisture sources and pathways can potentially improve the accuracy of predictions of summer precipitation extremes in Indonesia’s new capital city, Nusantara, and benefit natural resource managers in the region.
  • A Correlation between the Microclimate Forest to the Diversity of Orchids at Climate of the Lowland Dipterocarp Forest in Malinau Regency
    A P Sujalu, H Syahfari, P Astuti, N Jannah, H Sutejo, Jumani
    Iop Conference Series Earth and Environmental Science, 2021
    This research evaluated forest microclimate effects on biodiversity, explore relationships among canopy properties, and disentangle their relationship on orchid ephypite diversity in the climax. The presence of orchids data collection carried by census on every tree that is over grown, while the research plots using single plot to the extent of 6 plots, each of the sized of 100 x100 m of lowland dipterocarp forest in Malinau Regency. Overall number of orchids were found in 6 hectares of climax forest could be 3324 clumps or 554 clumps/hectares from 43 species especially of the genus Bulbophyllum (7 genus or 35%). The analysis used a multiple linear regression, while Pearson’s correlation method. was used to find out the correlation between X (climate parameters) and Y (number of orchid) variables. Correlation between the elements of micro-climate with a number of orchids in climax shows a positif and strong correlation between the presence of orchids with average daily humidity (0.99) and the intensity of radiation at each vertical tree stratum (0.95), instead the relationship with temperature showed negative and a weak correlation (-0.51).
  • Assessing the production of the new superior rice varieties in tidal swampland in Bulungan Regency, North Kalimantan
    M Hidayanto, Y Fiana, M Amin, A P Sujalu, Sumarmiyati
    Iop Conference Series Earth and Environmental Science, 2021
    The productivity of swampland in North Kalimantan, is still low and can be improved through appropriate cultivation technology. The study aims to increase swampland productivity in Tanjung Buka, Tanjung Palas Tengah Sub-District, Bulungan Regency through new superior varieties of rice. The introduction of new superior varieties of swamp rice (inbrida swamp rice-Inpara), namely Inpara-2, 4, 8, Inpari-30, Inpari-32, and local variety as a comparison, with the legowo row planting system (Jarwo) 2:1. The fertilizer dosage was 50 kg NPK ha−1, 100 Urea kg ha−1 and 1,000 kg dolomite ha−1. Plant growth, yield components and economic data were observed and calculated. Plant growth and yield components parameter were analyzed with Analysis of Variant (ANOVA), and followed with the Duncan Multiple Range Test (DMRT). Break-even point value and the BCR ratio were calculated for economic analysis. The result showed that the highest rice productivity was Inpara-2 and Inpari-32, and the lowest productivity was local variety. The research results showed that Inpara-2, 4, 8, Inpari-30, and Inpari-32 with the legowo row planting system (Jarwo) 2:1 had BCR >1, whereas if using of local variety BCR <1. Therefore, the recommended varieties to developed in this study area are Inpari-32 and Inpara-2.
  • Land Suitability of Sebatik Island for Cocoa (Theobroma cacao L.)
    Muhamad Hidayanto, Yossita Fiana, Afiah Hayati, S. Akas Pinaringan
    Iop Conference Series Earth and Environmental Science, 2020
    Abstract The purpose of this research is to find out the land suitability class on Sebatik Island, Nunukan Regency, North Kalimantan Province for cocoa (Theobroma cacao L.) in accordance with the agroecosystem of the area. The method of this research is a literature study and field survey, sampling and soil analysis in the laboratory, and interviews to determine the land condition and potential of the land for cocoa. The results of the study show that land suitability class on Sebatik Island for cocoa, which is quite suitable (S2) 1.94% of the total area (473,36 ha), land class according to marginal (S3) 88.36% of the total area (21,056 ha), and inappropriate class land (N) 8.52% (2,089 ha). In each land suitability class (S2, S3, N) has a limiting factor for cocoa. The suitability class of S2, the limiting factors are the availability of water (wa), erosion hazards (eh) and nutrient availability (nr). Class S3 the limiting factors are water availability (wa), oxygen availability (oa), erosion hazard (eh), nutrient availability (nr) and rooting condition (rc). In the not suitability class (N), the limiting factor is sulfidic hazards and limited rooting conditions (rc).
  • Analysis of water balance to determine cropping patterns of food crop in sub-watershed tenggarong, kutai kartanegara regency
    Bulgarian Journal of Agricultural Science, 2019

RECENT SCHOLAR PUBLICATIONS

  • Investigation of Rainfall Variability Across Different Region in Paser Regency-East Kalimantan, Indonesia
    AP Sujalu, M Napitupulu, N Jannah, R Yulianthi, KS Orianto, N Hadi, ...
    BIONATURE 46 (1), 404-411 , 2026
    2026
  • Sekilas tentang KEBIJAKAN SISTEM PENJAMINAN MUTU INTERNAL PENDIDIKAN TINGGI
    APS Catur, Hairun, Malinda
    2026
  • HIGHER EDUCATION INSTITUTIONS AND CLIMATE CHANGE: A Study of Roles And Responsibilities
    APS Jumani , Heni Emawati , Maya Preva Biantary , Karolina Sherly Orianto ...
    International Journal of Sciences and Innovation Engineering 3 (3), 845-852 , 2026
    2026
  • Sekilas tentang Kebijakan Sistem Penjaminan Mutu Internal Pendidikan Tinggi
    CK Dewi, H Jariah, M Kharista, AP Sujalu, I Solihin
    MITRA CENDEKIA MEDIA , 2026
    2026
  • Dasar-Dasar Ilmu Benih
    AP Sujalu, N marisi
    2026
  • Exploring the Economic–environmental Interlinkages in East Kalimantan: A Qualitative Literature-Based Analysis
    AG Belawing, Z Yahya, AP Sujalu
    Asian Basic and Applied Research Journal 7 (1), 584-592 , 2025
    2025
  • Parameter Iklim
    AP Sujalu, M N, N J., PB Maya
    2025
  • The Utilised Unmanned Aerial Vehicles in Forest Plantation Maintenance
    Z Yahya, DE Mujahiddin, R Setiawan, AP Sujalu
    Jurnal Penelitian Pendidikan IPA 11 (9), 527-532 , 2025
    2025
    Citations: 2
  • PENGARUH NUTRISI LAU KAWAR DAN PUPUK GDM SAME GRANULE BIO ORGANIK TERHADAP PERTUMBUHAN DAN HASIL TANAMAN JAGUNG PELANGI (Zea mays L.) VARIETAS GLASS GEM CORN
    MT Rahman, N Jannah, AP Sujalu
    Jurnal Agroteknologi dan Kehutanan Tropika 3 (2), 257-272 , 2025
    2025
  • catatan kecil PENJAMINAN MUTU PENDIDIKAN TINGGI
    AP Sujalu, kumala dewi Catur, jariah Hairun, solihin Iasya
    2025
  • Study on The Dynamics of Oil Palm Plantations in East Kalimantan Province
    Z Yahya, AP Sujalu
    Jurnal Penelitian Pendidikan IPA 11 (6), 23-28 , 2025
    2025
  • PELATIHAN PEMBUATAN DAN APLIKASI FOTOSINTESIS BAKTERIA (PSB) PADA KOMODITI PADI SAWAH DI KELOMPOK TANI PANCA KELURAHAN LEMPAKE KECAMATAN SAMARINDA UTARA
    H Sutejo, M Napitupulu, A Rahmi, H Syahfari, N Jannah, AP Sujalu, ...
    Jurnal Abdimas Untag Samarinda 3 (1), 33-44 , 2025
    2025
  • Pengendali Iklim Dunia
    akas pinaringan Sujalu
    2025
  • The Dynamics of Solid Waste
    AP Sujalu, RG Paramita, AYP Asih
    Advanced Researches in Agricultural Sciences 1, 59-68 , 2025
    2025
  • Manajemen Pengelolaan Limbah
    P Asih, akas pinaringan Sujalu, RG Paramita, YGT Lukiyono
    2025
  • Pengaruh Pemberian Kompos Dan Pupuk Cair Green Tonik Terhadap Pertumbuhan Dan Hasil Tanaman Kacang Hijau (Phaseolus radiatus L.) VARIETAS VIMA
    G Abin, J Noor, PS Akas
    JAKT 3 (1), 119-130 , 2025
    2025
    Citations: 1
  • Reviewer artikel "Greening the Roadside: an Assessment of Air Pollution's Effects on Shade Plants in Banda Aceh"
    AP Sujalu
    Philippine Journal of Science , 2024
    2024
  • PELATIHAN PEMBUATAN PUPUK ORGANIK CAIR SANOKIR DI KELOMPOK TANI RUKUN SENTOSA KELURAHAN SINDANGSARI KECAMATAN SAMBUTAN
    H Sutejo, M Napitupulu, A Rahmi, A Fatah, AP Sujalu, H Syahfari, P Astuti, ...
    Jurnal Abdimas Untag Samarinda 2 (2), 93-108 , 2024
    2024
  • Identification of Ornamental Shrubs that Absorb Air Pollutants at Green Open Area's, City of Samarinda, East Kalimantan, Indonesia
    AP Sujalu, LA Milasari, S Astati
    Asian Journal of Research in Agriculture and Forestry 10 (4), 321-327 , 2024
    2024
  • Deforestation and Rainfall in East Kalimantan
    AP Sujalu, et al
    Recent Trends in Bioresource Management for Greener Environment 1, 211-221 , 2024
    2024

MOST CITED SCHOLAR PUBLICATIONS

  • PENGARUH PUPUK KANDANG SAPI DAN PUPUK NPK MUTIARA TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TERUNG UNGU (Solanum melongena L. )
    M Hendri, M Napitupulu, AP Sujalu
    Agrifor: Jurnal Ilmu Pertanian dan Kehutanan 14 (2), 213-220 , 2015
    2015
    Citations: 168
  • Statistika Ekonomi 1
    akas pinaringan Sujalu, IN Latief, I Bakrie, LA Milasari
    Zahir Publishing 1, 184 , 2021
    2021
    Citations: 117
  • PENGARUH DOSIS PUPUK KANDANG SAPI TERHADAP PERTUMBUHAN DAN HASIL TANAMAN TERUNG UNGU DAN TERUNG HIJAU (Solanum melongena L .)
    D Sriyanto, P Astuti, AP Sujalu
    Agrifor 14 (1), 39-44 , 2015
    2015
    Citations: 87
  • Ilmu Alamiah Dasar
    AP Sujalu, Ismail, Jumani, H Emawati, LA Milasari
    Zahir Publishing , 2021
    2021
    Citations: 64
  • Pengaruh Jarak Tanam dan Pupuk NPK Phonska terhadap Pertumbuhan dan Produksi Tanaman Jagung Manis (Zea mays saccharata Sturt) Varietas Sweet Boy
    aris Widodo, AP Sujalu, H Syahfari
    Agrifor 15 (2), 171-178 , 2016
    2016
    Citations: 57
  • Moisture origin and transport for extreme precipitation over Indonesia’s new capital city, Nusantara in August 2021
    A Purwaningsih, SW Lubis, E Hermawan, DF Andarini, T Harjana, ...
    Atmosphere 13 (9), 1391 , 2022
    2022
    Citations: 33
  • Pengaruh pemberian pupuk kandang ayam dan pupuk urea terhadap pertumbuhan dan produksi tanaman kailan (Brassica oleraceae L)
    PS Akas, S Silvester, M Napitupulu
    Agrifor 12 (2), 206-2011 , 2013
    2013
    Citations: 25
  • Identifikasi Keanekaragaman Paku-pakuan (Pteridophyta) Epifit Pada Hutan Bekas Tebangan Di Hutan Penelitian Malinau–Cifor Seturan (Diversity Identification on the Pteridophytes …
    AP Sujalu
    Media Konservasi 12 (1), 38-48 , 2007
    2007
    Citations: 25
  • Pengaruh pupuk kandang sapi dan pupuk NPK Mutiara 16: 16: 16 terhadap pertumbuhan dan produksi tanaman selada (Lactuca sativa L.)
    J Noor, PS Akas
    Agrifor 16 (2), 287-300 , 2017
    2017
    Citations: 24
  • Pengaruh jenis dan konsentrasi pupuk daun terhadap pertumbuhan dan hasil tanaman terung (Solanum melongena L.) varietas Mustang F1
    M Isnaini, A Rahmi, AP Sujalu
    Agrifor: Jurnal Ilmu Pertanian dan Kehutanan 13 (1), 53-58 , 2014
    2014
    Citations: 22
  • Identifikasi Pohon Inang Epifit di Hutan Bekas Tebangan Pada Dataran Rendah Daerah Aliran Sungai (DAS) Malinau
    AP Sujalu, S Hardwinarto, sumaryono Boer, Chandradewana
    Jurnal Penelitian Ekosistem Dipterokarpa 1 (1), 1-6 , 2015
    2015
    Citations: 17
  • Analisis vegetasi keanekaragaman anggrek epifit di hutan bekas tebangan, Hutan Penelitian Malinau (Mrf)–Cifor
    PS Akas
    media Konservasi 13 (3), 1-9 , 2008
    2008
    Citations: 17
  • PELATIHAN PENGELOLAAN OPEN JOURNAL SYSTEM (OJS) MENUJU JURNAL TERAKREDITASI PADA EDITOR JURNAL
    Jumani, AP Sujalu, LA Milasari, Findia
    Ta’awun: Jurnal Pengabdian Kepada Masyarakat 2 (2), 161-169 , 2022
    2022
    Citations: 15
  • Matematika Ekonomi
    akas pinaringan sujalu, E Soegiarto, T Ruliana
    Zahir Publishing 1, 178 , 2021
    2021
    Citations: 13
  • Characteristics of Mesoscale Convective Systems and Their Impact on Heavy Rainfall in Indonesia’s New Capital City, Nusantara
    E Hermawan, R Risyanto, A Purwaningsih, DN Ratri, A Ridho, T Harjana, ...
    March , 2022
    2022
    Citations: 12
  • Water Balance Analysis of Land in Pasir District
    A Sujalu
    Journal of Agriculture 6 (2) , 2000
    2000
    Citations: 11
  • IDENTIFIKASI POHON INANG EPIFIT DI HUTAN DIPTEROCARPACEAE DATARAN RENDAH KLIMAKS KABUPATEN MALINAU
    AP Sujalu
    Journal ULIN 1 (2), 196-201 , 2017
    2017
    Citations: 10
  • PERTANIAN, KEHUTANAN DAN KEMAKMURAN PETANI
    FS Latumahina, H Hafid, P Hadi, A Mutolib, Y Arifien, M Asir, ...
    Penerbit Widina , 2021
    2021
    Citations: 9
  • KEANEKARAGAMAN EPIFIT BERKAYU PADA HUTAN BEKAS TEBANGAN DI HUTAN PENELITIAN MALINAU (MRF) – CIFOR
    AP Sujalu, AY Pulihasih
    Jurnal Penelitian Hutan dan Konservasi Alam 8 (3), 211-216 , 2011
    2011
    Citations: 9
  • Rice Cropping Pattern Planning, corn and soybeans on 60% Chance Rain Events in Tenggarong-Kutai Regency
    A Sujalu
    HABITAT Journal No. XIII , 2002
    2002
    Citations: 9

Publications

Associate Profesor at Agrotechnology Department-Agricultural Faculty, the University of 17 Agustus 1945 Samarinda (East Kalimantan, Indonesia). He received his Graduate in Geophysics and Meteorology in Bogor Agricultural University (1987), M.Agr. (2002) and Ph.D (2015) in Forest Science - Mulawarman University, respectively. From 1995 until 2011, he worked as Research Institute in the University of 17 Agustus 1945 Samarinda, East Kalimantan, Indonesia.
Already has 8 Copyright and > 120 published many different articles in news paper, scientific paper journals such as, agro-climate especially about Agrotechnology, climate changed and water management, forest science especially microclimate.