Studi Erosi Tanah pada Areal Penelitian Tanam Rumpang di PT. Intracawood Manufacturing

Abstract

Sistem silvikultur Tanam Rumpang Tebang Rumpang (TRTR) merupakan salah satu upaya yang dapat diterapkan untuk mengembalikan fungsi lahan hutan yang mengalami degradasi. Sistem ini digunakan untuk merehabilitasi hutan alam yang rusak dengan penanaman fast growing species lokal non-Dipterocarpaceae maupun Dipterocarpaceae di areal rumpang. Penelitian ini bertujuan untuk mengetahui pengaruh dari tanam rumpang terhadap besarnya erosi tanah. Hasil penelitian menunjukan bahwa areal blok tanpa perlakuan memiliki nilai berat tanah tererosi terbesar. Areal blok perlakuan mengalami penimbunan. Uji statistik menunjukan bahwa besarnya erosi di areal rumpang yang diberi perlakuan tidak berbeda nyata terhadap besarnya erosi di areal rumpang tanpa perlakuan, besarnya erosi di areal rumpang yang diberi perlakuan tidak berbeda nyata terhadap besarnya erosi di hutan alam, dan besarnya erosi di areal rumpang tanpa perlakuan tidak berbeda nyata terhadap besarnya erosi di hutan alam.

The silvicultural system of Gap Planting and Gap Felling (TRTR), is one of method that can be applied to restore the function of degraded forests. This system is used to rehabilitate damaged forests by planting of local fast-growing species of non-Dipterocarpaceae or Dipterocarpaceae in the gap. This study aims to determine the effect of gap planting on erosion rates. The results showed that natural forest in block area without treatment has the largest soil erosion weight rate. The treatment block area was piled up. Statistical analysis showed that the amount of erosion in the treated gap plot was not significantly different from the amount of erosion in the untreated gap plot, and the amount of erosion in the treated gap plot was not significantly different from the amount of erosion in natural forest, and the amount of erosion in the untreated gap plot was not significantly different from the amount of erosion in natural forests