Model Penduga Biomassa dan Karbon Tegakan Hutan Kerangas di Taman Nasional Danau Sentarum Kalimantan Barat

Abstract

Above ground biomass and carbon were estimated in heath forest stand in Danau Sentarum National Park (DSNP), West Kalimantan. The research was carried out from December 2003 to February 2004, and allometric relation method was use to estimate the above ground tree biomass and carbon of heath forest stand having a diameter of 2 em and over, and destructive method was use to estimate the above ground biomass and carbon of understorey, litters, and aerial roots. Soil carbon content was estimated by Walkley and Black method. The relationship between a diameter and height of the trees was fairly good approximated by a hyperbolic function. Besides, the relationship between tree biomass and diameter as well as tree carbon and diameter followed logarithmic function. Amount of soil carbon had not correlation with above ground carbon. Our result obtained showed that the above ground tree biomass and carbon of heath forest in DSNP were amounted to 874.9 t/ha and 169.2 t C/ha, respectively. Besides, the above ground biomass and carbon of understorey, litters and aerial roots were 29.5 t/ha and 6.9 t C/ha, respectively.

Biomassa dan karbon di atas permukaan tanah dari tegakan hutan kerangas di Taman Nasional Danau Sentarum TNDS, Kalimantan Barat telah diduga dalam kurun waktu Desember 2003 - Febmari 2004. Metode hubungan alometrik digunakan untuk menduga biomassa dan karbon di atas permukaan tanah dari pohon yang berdiameter 2 cm atau lebib, sedangkan biomassa dan karbon tumbuhan bawah, serasah dan akar nafas diduga dengan metode destruktif. Kandungan karbon tanah diduga dengan menggunakan metode Walkley & Black. Hubungan antara diameter dan tinggi pobon sangat baik dengan mengikuti fungsi hiperbolik. Sedangkan, hubungan antara biomassa di atas permukaan tanah dengan diameter pobon, maupun karbon di atas permukaan tanah dengan diameter pohon mengikuti fungsi logaritma. Tidak ada korelasi antarajumlah karbon tanah dengan karbon di atas permukaan tanah. Hasil penelitian menunjukkan bahwa biomassa dan karbon bagian pohon di atas permukaan tanah secara berturut-turut adalah 874,9 t1ha and 169,2 t Clba. Sedangkan biomassa dan karbon tumbuhan bawah, serasab dan akar nafas secara berturut-turut adalah 29,5 t1ha and 6,9 t e/ha.