STUDI SUKSESI AWAL HUTAN BEKAS PERLADANGAN DI DESA POLANTO JAYA KECAMATAN DOLO KABUPATEN DONGGALA SULAWESI TENGAH

Jacobus Wanggai, Dr.Ir. Djoko Marsono

1994 | Tesis | S2 Ilmu Kehutanan

Pr????ses suksesi vegetasi pada bekas perladangan perlu dipelajari agar dapat dimanfaatkan untuk kepentingan pemulihan· kondisi lingkungan dan kesuburan tanah dengan biaya murah. Hal ini dapat dilakukan dengan mempelajari tahap-tahap perkembangan suksesi pada areal tersebut sehingga pengaturan siklus perladangan dapat diatur agar kondisi lingkungan dan kesuburan tanah dapat tetap dipertahankan. Penelitian ini bertujuan mempelajari perubahan struktur, komposisi dan keragaman vegetasi pada beberapa umur areal bekas perladangan serta mempelajari hubungan antara keliropahan jenis vegetasi dengan beberapa komponen faktor lingkungan tanah. Penelitian ini dilakukan dengan cara membandingkan antara areal bekas perladangan umur 1, 2, 3 dan 4 tahun di sekitar desa Polanto Jaya, Kecamatan Delo, Kabupaten Donggala Sulawesi Tengah .. Pengamatan dilakukan terhadap semua jenis tumbuhan bawah, tingkat semai, sapihan, tiang dan pohon. Parameter vegetasi yang diamati adalah biomas tumbuhan bawah, jumlah jenis, jumlah individu tiap -jenis dan diameter sapihan, tiang dan pohon. Data yang diperoleh dianalisis berdasarkan metode analisis vegetasi, metode ordinasi komunitas dan metode analisis regresi linear sederhana.

It is necessary to study the succession process of vegetation on formerly cultivated area which could be used for recovering the environment condition and soil fertility at a low price. This could be done by studying the development stage of the succession process in that area so that the cycle of shifting cultivation can be arranged to maintain the environment condition and soil vertility. This study has the objectives of examining the changes in structure, composition and variability of vegetation on areas which has been abandoned for different period of time, and finding out the relationship between vegetation diversity and several soil environment factors. It was done using side by side comparison in the formerly cultivated areas which had been abandoned for 1, 2, 3, and 4 years, in surrounding areas of Polanto Jaya, District of Dolo, Regency of Donggala, Central Sulawesi Province. All species found in the area were recorded, and stratified as ground cover, seedlings, saplings, pole, and tree. Measurements were made for biomass, number of species, frequency of each species, and diameter of saplings, poles and trees. The data obtained were analized using vegetation analysis, community ordination and simple linear regression method. The result showed that succession process of grand covers, seedlings, saplings, pole, and tree has taken place in formerly cultivated area but now abandoned, as indicated by differences in species composition, structure and diversity. Ground cover consists of 28 species (12 families), seedling

Kata Kunci : Ilmu Kehutanan,Perhutanan,Hutan Bekas Perladangan