HUBUNGAN ANTARA PERTUMBUHAN TANAMAN MANGROVE DENGAN FAKTOR HABITAT DI PANTAI UTARA DESA TIREMAN KABUPATEN REMBANG

PADANG RIYADI, Kaharuddin

2011 | Skripsi | S1 KEHUTANAN

Faktor habitat merupakanfaktorpentingyang berhubungandenganhutan mangrove,salahsatunyaberkaitandenganpertumbuhanhutan mangrove.Penelitian ini bertujuan untuk mengetahuikerapatan, tinggi, dan diameter mangrove, mengetahuiperbedaanfaktor habitat: salinitas, pH, oksigenterlarut, danketebalanlumpursertauntukmengetahuihubunganantarapertumbuhan mangrove: kerapatan,tinggi, dan diameter mangrove denganfaktor habitat: salinitas, pH, oksigenterlarut, danketebalanlumpur. Penelitianinidilakukandengancaramemilihtahuntanam, yaitu 1975, 1983, 1990, dan 2005, yang masing-masingmempunyailuas2367 m2, 2820 m2 ,1360 m2,1908 m2. Masing-masingtahuntanamdibuatjalurdengan Line Plot Sampling, yang di dalamnyaterdapatpetakukurukuran5x5 m, jarak antar petak ukur 10m. Setiap tahun tanam dibuat sebanyak 10 petak ukur. Setiap petak ukur dilakukan pengukuran tinggi, diameter, jumlah, dan jenis mangrove serta pengukuran faktor habitat. Hubunganpertumbuhan mangrove denganfaktor habitat dianalisisdenganregresi linear berganda. Hasil penelitian menunjukkan bahwadi kawasan rehabilitasi mangrove Desa TiremanKabupaten Rembang didominasiolehRhizophora apiculata.Rata-rata kerapatan tertinggi terdapat pada tahuntanam 2005 yaitu sebesar 22000pohon/ha. Rata-rata tinggi mangrove tertinggiterdapatpadatahuntanam 1975 yaitu 7,1 m. Rata-rata diameter mangrove terbesarterdapatpadatahuntanam 1975 yaitu 8,6 cm. Hubunganantarapertumbuhan mangrove: kerapatan, tinggi, dan diameter mangrove terhadapfaktor habitat kuatterlihatdengannilaikoefisienkorelasi (r) 0,7.

Habitat factors are important to related of mangrove forests. One of which relates to the growth of mangrove forests. This study aims to determine density, height, and diameter, the difference habitat factors : salinity, pH, dissolved oxygen, and the thickness of the mud. And theinteraction between the growth of mangrove : density, height, and diameter of the mangrove vegetationwith habitat factors : salinity, pH, dissolved oxygen, and the thickness of the mud. To ascertain the interactionbetween density and height of mangrove vegetation with some habitat factors in a mangrove rehabilitation area in Tireman village in planting years 1975, 1983, 1990, and 2005. The study was conducted using a Line Plot Sampling method. Each planting year paths were made using Line Plot Sampling in which there were plots measuring 5x5 m in size with distance between plots measuring 10m. Every planting year10 plots were made. Each plot height, diameter, amount and type of mangrove, and measurement of habitat factor were measured. The relationship between density, height, and diameter of mangrove vegetation with several habitat factors were analyzed using multiple linear regressions. The results show that there are three types of constituent mangrove in the the rehabilitation area Tireman Village,Rembang District to dominatedRhizophora apiculata. The highest density was found in the year 2005 that is equal to planting 22 000 trees/ha. The height mangrove obtainedin the planting year of 1975 with of 7,1 m. The highest diameter mangrove obtainedin the planting year of 1975 with of 8,6 cm m. Interaction between the density , height, and diameter of mangrove and habitat factors substantial the value of the coefficient of correlation (r) 0,7

Kata Kunci : mangrove, habitat, pertumbuhan