Hutan tanaman kayu putih (Mellaleuca cajuputi subsp cajuputi Powell) termasuk hasil hutan bukan kayu (HHBK) merupakan produk unggulan PERUM PERHUTANI yang sangat penting baik di tinjau dari aspek ekonomi dan aspek ekologi. Melalui budidaya tanaman kayu putih diharapkan dapat diraih dua keuntungan, pertama keuntungan ekologis berbentuk konservasi salah satunya berkontribusi pada siklus karbon global. dari adanya tegakan kayu putih, kedua keuntungan ekonomis melalui pengolahan daun kayu putih menjadi minyak kayu putih.sebagai sumber pendapatan yang penting selain hasil hutan berupa produk kayu. Tujuan dari penelitian ini adalah Estimasi produksi basah organ tanaman daun dan ranting. Menduga besarnya potensi biomassa tanaman kayu putih. Menduga kandungan karbon (C) yang tersimpan pada berbagai organ tanaman, menduga besarnya potensi hutan tanaman dalam menyerap gas CO2. Membangun persamaan allometrik untuk mengetahui kandungan biomassa, karbon dan potensi serapan CO2 tanaman kayu putih Penelitian dilakukan pada hutan tanaman Kayu Putih di areal BKPH Sukun KPH Madiun. Pendugaan potensi dilakukan melalui kegiatan inventore hutan pada berbagai kelas umur Pengukuran berat basah daun dan ranting, biomassa organ daun, ranting dan cabang dilakukan dengan teknik “destructive sampling” sedang pada biomassa organ batang dengan teknik “non destructive sampling”. Pengukuran kandungan karbon dilakukan dengan metode Walkley dan Black. Potensi serapan gas CO2 diestimasi dari kandungan karbon pohon dengan konversi berat massa. Potensi tegakan per hektar pada tanaman kayu putih umur 3 tahun sebesar 5,88 m3/ha sedangkan untuk tanaman produksi rata-rata adalah 15,52 m3/ha. Estimasi produksi basah daun dan ranting berbagai umur rata rata 2,99 kg per pohon atau rata-rata sebesar 3,5 ton/ha/tahun. Kerapatan Kayu(wood density) rata-rata 0,55 g/cm3. Nilai BEF rata-rata sebesar 1,46. Rata-rata kandungan biomassa 7.724,16 gram per pohon atau rata-rata sebesar 11,587 ton/hektar. Rata-rata kandungan karbon 5,07 kg/pohon, atau rata-rata sebesar 7,61 ton/hektar. Potensi penyerapan gas CO2 dari tanaman kayu putih pada berbagai variasi umur rata-rata 18,61 kg CO2/pohon, atau rata-rata 27,94 ton CO2/ha. Persamaan allometrik untuk menduga biomassa : Biomassa = e 7,771 + 0,123 Dtbbc, Biomassa = 3.287,405 U 0,284, Kandungan karbon = 10,546 – 2,344 Dtbbc + 0,177 Dtbbc2, Karbon = 2.082 U 0,285, Potensi penyerapan CO2 = e 1,697 + 0,124 Dtbbc, Penyerapan CO2 = 7,641 U 0,285.

Kayu putih (Mellaleuca cajuputi subsp cajuputi Powell) plantations including non timber forest products (NTFP) is the flagship product of Perum Perhutani very important both in the review of economic and ecological aspects. Through the cultivation of kayu putih is expected to be achieved two advantages, first the ecological benefits of conservation-shaped one contribute to the global carbon cycle. from the existence of stands of kayu putih, The second economic advantage through the processing of kayu putih leaves into cajuputi oil as important source of income other than forest products such as wood products. The purpose of this study is to estimate the production of wet leaves and twigs of plants. Predicting the amount of potential biomass production of kayu putih. Predicting carbon content (C) stored in various organs of plants, expecting large potential of plantation forests in absorb CO2. And build allometrik equation to determine the content of biomass, carbon and CO2 absorption potential crop kayu putih. The research was conducted at the kayu putih plantation forests in the area BPKH Sukun KPH Madiun. Estimation of potency was conducted by using forest inventory of the various age class. Measurements of fresh weight of leaves and twigs, biomass of leaves, twigs and branches was done by using destructive sampling while measurement of stem biomassa was conducted by using nondestructive sampling technique. Measurement of carbon content was conducted by using Walkley and Black method. The absorption potency of CO2 was estimated from the carbon content of trees with weight mass conversion. The average of standing stock per hectare of three years-aged kayu putih plantations is 5,88 m3/ha and produced crop is 15,52 m3/ha. The average of estimated production of fresh weight of leaves and twigs is 2,99 kg per tree, or 3,5 tons/ha/year. The average of wood density is 0,55 g/cm3. The average of BEF is 1,46. and biomass content is 7.724,16 grams/tree, or 11,587 tons/hectare. The average of carbon content is 5,07 kg/tree, or 7,61 tons/hectare. The average of potency of CO2 absorption from the kayu putih plantations at various age is 18,61 kg CO2/tree, or 27,94 ton CO2/ha. Allometrik equations to estimate biomass is Biomass = e 7,771 + 0,123 Dtbbc, Biomass = 3.287,405 U 0,284, carbon content = 10,546 – 2,344 Dtbbc + 0,177 Dtbbc2, Carbon content = 2.082 U 0,285, Potential CO2 absorption = e 1,697 + 0,124 Dtbbc, Absorption of CO2 = 7,641 U 0,285

Kata Kunci : Tanaman kayu putih,Estimasi produksi,Biomassa,Kandungan karbon,Serapan karbon