STUDI IKLIM MIKRO DAN TOPOGRAFI PADA HABITAT PARASHOREA MALAANONAN MERR (STUDY OF MICROCLIMATE AND TOPOGRAPHY AT PARASHOREA MALAANONAN MERR HABITAT)

M. Fajri dan Ngatiman

Balai Besar Penelitian dan Pengembangan Ekosistem Hutan Dipterokarpa 
Jl. AW. Syahranie No.68, Sempaja, Samarinda, Kalimantan Timur, Indonesia
e-mail: fajririmbawan@gmail.com

Jurnal Ekosistem Hutan Dipterokarpa Volume I No 1 tahun 2017

ABSTRAK

Tujuan penelitian untuk mengetahui kondisi iklim mikro dan topografi pada habitat Parashorea malaanonan Merr di hutan alam. Metode penelitian sebagai berikut:1. Lokasi penelitian di KHDTK Labanan, Kabupaten Berau, Kalimantan Timur dan Tane Olen, Desa Setulang kabupaten Malinau, Kalimantan Utara. 2. Penentuan plot menggunakan metode Purposive Sampling. Plot penelitian berbentuk bujur sangkar dengan luas 1 hektar; 3. Data berupa: a. Data iklim mikro, yaitu suhu, kelembaban udara, intensitas cahaya; b. Data topografi; 4. Analisis Data: Data lapangan akan ditabulasi dan di analisis secara deskriptif. Hasil penelitian :1. Intensitas cahaya: a. Pada plot 1 KHDTK Labanan, intensitas cahaya pagi hari rata-rata 21,28% (425,3Lm), siang hari rata-rata 29,63% (592,3Lm) dan sore hari rata-rata 19,73% (394,3Lm); b. Pada plot 2 Tane olen, Desa Setulang, intensitas cahaya pagi hari rata-rata 20,04% (400,67Lm), siang rata-rata 23,46% (469Lm) dan sore hari rata-rata sekitar 12,52% (250,33Lm). 2. Suhu dan kelembaban: a. Pada plot 1, pagi hari, suhu lingkungan rata-rata 23,8°C, siang hari rata-rata 26°C dan sore hari rata-rata 24,2°C. untuk kelembaban udara pada pagi rata-rata 84%, siang hari rata-rata sekitar 84,7% dan sore hari rata-rata sekitar 86,7%; b. Untuk suhu dan kelembaban pada plot 2, pada pagi hari suhu lingkungan rata-rata sekitar 24,5°C, siang hari rata-rata 25,67°C dan sore hari rata-rata 24,17°C. Untuk kelembaban udara pada pagi hari rata-rata 80%, siang hari rata-rata 80% dan sore hari rata-rata 85,33%. 3. Untuk topografi: a. Pada plot 1, topografi antara 0 % s/d 110 %, dengan komposisi sebagai berikut : datar/flat (0-8 %) 2,69 %, landai/lower slope (8-15 %) 9,42 %, agak curam/mid slope (15-25 %) 2,76 %, curam/steep (25-40 %) 40,91 % dan sangat curam/upper steep (> 40 %) 23,22 %;b. Untuk topografi plot 2, kelerengen lahan antara 0 s/d 50 %, dengan komposisi : datar/flat (0-8 %) 19,27 %, landai/lower slope (8-15 %) 28,78 %, agak curam/mid slope (15-25 %) 25,54 %, curam/steep (25-40 %) 19,33 % dan sangat curam/upper steep (> 40 %) sekitar 7,07 %. Jenis P. malaanonan menyukai habitat dipinggir sungai dengan topografi yang datar dan landau dan kondisi iklim mikro yang baik sehingga mendukung pertumbuhan mereka.

Kata Kunci : Parashorea malaanonan, iklim mikro, topografi

ABSTRACT

This study aims to determine the conditions of the microclimate and topography at habitat Parashorea malaanonan Merr in natural forests. The research method as follows: 1. the research location in KHDTK Labanan, Berau District, East Kalimantan and Tane Olen, Setulang village, Malinau district, North Borneo; 2. Determination plot using purposive sampling method. form of research plots is Squares with an area of 1 hectare; 3. Collecting data in the form of: a. micro climate data, such as temperature, humidity, light intensity; b. topographic data; 4. Data analysis: data will be tabulated and analyzed descriptively. Research result : 1. For light intensity: a. at the plot 1 KHDTK Labanan, the average intensity of light in the morning  of 21.28% (425,3Lm), at noon on average 29.63% (592,3Lm) and at the afternoon average 19.73% (394,3Lm); b. at plot 2, in Tane olen, Setulang village, the average of  intensity of light in the morning 20.04% (400,67Lm), at noon on average  23.46% (469Lm) and at the afternoon average  12.52 % (250,33Lm). 2. For temperature and humidity: a. at plot 1, in the morning, the average temperature of 23.8°C, at noon, average  26°C and at the afternoon an average of 24.2°C. humidity in the morning, the average of 84%, at noon, average 84.7% and at the afternoon, average 86.7%; b. For the temperature and humidity at plot 2, in the morning of the average temperature of about 24.5°C, at noon, average 25.67°C and at the afternoon an average of 24.17°C. For the humidity, in the morning, average 80%, at noon, average of 80% and at the afternoon, average 85.33%. 3. For topography: a. at plot 1, have topography between 0% - 110%, with  composition as follows:  flat category(0-8%)  2.69%, ramps  (8-15% ) 9.42%,  rather steep (15-25%)  2.76%, steep (25-40%)  40.91% and  very steep  (> 40% )  23.22%; b. For topographical at plot 2, have topography between 0 - 50%, with  composition as follows:  flat category (0-8%) 19.27%, ramps ( 8-15%) 28.78%,  rather steep (15-25%) 25.54%,  steep (25-40%)  19.33%, and very steep (> 40%)7.07%. P. malaanonan favor riverside habitats with flat topography and good climatic conditions so as to support their growth

Kata Kunci : Parashorea malaanonan, iklim mikro, topografi