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All Journal EUGENIA COCOS
F. B. Saroinsong
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Agriculture, Biological Sciences & Forestry

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PENGARUH RUANG TERBUKA HIJAU TERHADAP IKLIM MIKRO DAN KENYAMANAN TERMAL PADA 3 LOKASI DI KOTA MANADO Mala, Yordan P.; Kalangi, J. I.; Saroinsong, F. B.
EUGENIA Vol 24, No 2 (2018)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.24.2.2018.22658

Abstract

Microclimate is an important requirement for urban communities in creating outdoor thermal comfort. Micro climate as a benchmark in determining thermal comfort consists of 4 (four) elements which are, air temperature, air humidity, wind speed and solar radiation. Green open space area is one way to create comfortable micro climate for the community. The purpose of this study is to analyze microclimate and thermal comfort in 3 (three) green open spaces. The researcher used a purposive sampling method and chose the area with the same characteristics, namely UNSRAT Field, Tikala Field, and KONI Field. The results obtained were that the UNSRAT Field had the highest thermal comfort level with a percentage reaching 90% at 10:00 a.m. and 80% at 1:00 p.m. In addition, the micro climates in the three locations have differences, differences occur due to canopy area, tree species, plants, pavement type and building area around green open space.Keywords : microclimate, climate, open space, green open space
LOLOSAN TAJUK, ALIRAN BATANG DAN INTERSEPSI PADA POHON PAKOBA (Syzigium sp.) NANTU (Palaquium obtusifolium Burck) DAN CEMPAKA (Magnolia tsiampacca) Rumagit, Novita I.; Kalangi, J. I.; Saroinsong, F. B.
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31398

Abstract

Interception is one part of hidrology cycle which small value and sometimes ignored but interception has a large impact on certain plants. Amoun of value stem fall and through fall affected by interception. This study was conducted in Tomohon City Forest with purpose to determine magnitude of value through fall, stem fall and interception pakoba (Syzigium Sp.), nantu (Palaquium obtusifolium Burck) and cempaka (Magnolia tsiampacca). This research by using randomized group design method use 3 (tree) type of trees pakoba (Syzigium Sp.), nantu (Palaquium obtusifolium Burck) and cempaka (Magnolia tsiampacca). Each was repeated 5 (Five) times, in order to obtain 15 units of the experiment. Data were analyzed with analysis of variance and further using BNT test. The result of this research show amount of value stem fall pakoba 10,55 %, nantu 9,01 % and cempaka 7,99 %. Amount of value through fall pakoba 8,13 %, nantu 5,25 % and cempaka 2,45 %. Amount of value interception pakoba 82 %, nantu 86,31 % and cempaka 89,37 %. BNT test show interception in pakoba 82 % significant different with cempaka 89,37 % and not significant different with nantu 86,31 %. Nantu 86,31 % not significant different with cempaka 89,37 %.
LAJU RESAPAN ALIRAN PERMUKAAN OLEH LUBANG RESAPAN GEOPORI PADA LAHAN PERTANIAN PASCA PANEN Rarun, Suharti; Kalangi, J. I.; Saroinsong, F. B.
EUGENIA Vol 25, No 2 (2019)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/eug.25.2.2019.31399

Abstract

In the last few years, many forests in Indonesia have experienced changes in land use to agricultural land, this has implications for the emergence of environmental problems, namely an increase in surface flow that causes flooding . Geopore technology or geopore infiltration hole is a technology that can be used to reduced rainwater runoff by absorbing more volume of rainwater into the soil and can help to maintain the presence or availability of ground water. This study aims to determine the percentage of surface flow reduction by geopore infiltration holes in land-based trees, reeds and open land. This study aims to determine the volume of surface flow and the rate of infiltration of rainwater on post-harvest agricultural land. The method in this study used a was randomized block design as a data collection method which was then analyzed using descriptive analysis. The results of this study showed that the average rainfall intensity of 16.36 mm / hour obtained an average rate of recharge on post-harvest agricultural land without geopore which was 65 mm / hour and the average rate of recharge on agricultural land with geopore infiltration holes namely 148 mm / hour.
PENDUGAAN BIOMASSA TANAMAN PENGHIJAUAN ANGSANA (Pterocarpus indicus Willd) DI JALAN SAM RATULANGI DAN JALAN TOAR KOTA MANADO Iswan . Laengge; Martina A. Langi; F. B. Saroinsong; J . Singgano
COCOS Vol. 2 No. 2 (2013)
Publisher : Universitas Sam Ratulangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35791/cocos.v2i2.1471

Abstract

ABSTRAK Angsana merupakan jenis tanaman penghasil kayu berkualitas tinggi dari suku Fabales, kayunya tergolong keras dan berat. Penurunan kualitas lingkungan perkotaan ditandai dengan semakin meningkatnya pencemaran udara yang dihasilkan oleh kendaraan bermotor, limbah rumah tangga, dan aktivitas industri yang mengemisikan gas-gas seperti CO2 dan gas NOx di samping bentuk-bentuk polutan lainnya. Hal-hal tersebut dapat memperburuk dampak pemanasan global. Penelitian ini dilakukan untuk menaksir biomassa guna mengetahui kandungan karbon (C) dari jenis angsana (Pterocarpus indicus Willd) pada sisi kiri jalur penghijauan Jalan Sam Ratulangi dan Jalan Toar, Kota Manado. Penghitungan biomassa angsana menggunakan persamaan allometrik untuk hutan atau tumbuhan tropika lembab yang terdiri dari dua peubah bebas, (AGB = α + β1 (ln (DBH)2× H). Hasil pendugaan biomassa tanaman angsana menunjukkan rata-rata biomassa di jalur penghijauan Jalan Sam Ratulangi dan Jalan Toar masing-masing sebesar 252,12 kg, dan 230,93 kg. Kandungan karbon tersimpan pada kedua jalur penghijauan masing-masing sebesar 126,06 kg, dan 115,46 kg.Kata kuci : Pemanasan global, biomassa, karbon, metode non-destructive sampling, persamaan allometrik, Pterocarpus indicus Willd
Co-Authors Iswan . Laengge J . Singgano J. I. Kalangi, J. I. Mala, Yordan P. Martina A. Langi Martina A. Langi Rarun, Suharti Rumagit, Novita I.