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All Journal Indonesian Journal of Forestry Research Jurnal Penelitian Hutan dan Konservasi Alam Journal of Degraded and Mining Lands Management Forum Geografi Indonesian Journal of Forestry Research
Tyas Mutiara Basuki
Forestry Research Institute on Watershed Management
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences

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CARBON STOCK ASSESSMENT IN PINE FOREST OF KEDUNG BULUS SUB-WATERSHED (GOMBONG DISTRICT) USING REMOTE SENSING AND FOREST INVENTORY DATA Basuki, Tyas Mutiara; Wahyuningrum, Nining
Indonesian Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

Carbon stock in tree biomass can be quantified directly by cutting and weighing trees. It is assumed that 50% of the dry weight of biomass consists of carbon. This direct measurement is the most accurate method, however for large areas it is considered time consuming and costly. Remote sensing has been proven to be an important tool for mapping and monitoring carbon stock from landscape to global scale in order to support forest management and policy practices. The study aimed to (1) develop regression models for estimating carbon stock of pine forests using field measurement and remotely sensed data; and (2) quantify soil carbon stock under pine forests using field measurement. The study was conducted in Kedung Bulus sub-watershed, Gombong - Central Java. The derived data from Satellite Probatoire dObservation de la Terre (SPOT) included spectral band 1, 2, 3, and 4, Normalized Differences Vegetation Index (NDVI), and Principle Component Analysis (PCA) images. These data were integrated with field measurement to develop models. Soil samples were collected by augering for every 20 cm until a depth of  100 cm. The potential of  remote sensing to estimate carbon stock was shown by the strong correlation between multiple bands of SPOT (band 2 , 3; band 1, 2, 3; band 1, 3, 4; and band 1, 2, 3, 4) and carbon stock with r = 0.76, PCA (PC1, PC2, PC3) and carbon stock with r = 0.73. The role of pine forest to reduce CO2 in the atmosphere was demonstrated by the amount of carbon in the tree and the soil. Carbon stock in the tree biomass varied from 26 to 206 Mg C ha-1 and in the soil under pine forest ranged from 85 to 194 Mg C ha-1.
The Effectiveness of Canopy Trees to Reduce Rainfall Acidity in the Industrial Area at Medan Basuki, Tyas Mutiara
Forum Geografi Vol 14, No 2 (2000)
Publisher : Forum Geografi

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Abstract

The term of acid rain is referred to the mean rainfall with a pH less than 5,65. The element of Sox and Nox are the major sources of aid rain. These two elements are oxidized into SO4 and NO3 respectively in the air. Sulfate and Nitrate are water soluble and the primary sources of hydrogen ions in acid precipitation. Rain passing through a tree canopy may lose or gain mineral elements trough some combination of natural process of absorption and leaching. By this process, the canopy may reduce rainfall acidity and negatif effects of the acid rain which will enter into the soil. Due to characteristic differences among tree canopies, a study to evaluate effectiveness of the trees in reducing rainfall acidity was done. In this study, rainfall and troughfall were collected every single rain and the pH measure by portable pH-meter. Based on data collection during 3 months in Medan Industrial Estate, it found that the mean pH of rainfall was 5,15. The highest pH of throughfall was found from Gnetum gnemon, that was 5,70; following by Mimusops elengi, Filicium decipiens, Acacia mangium, and the lowest was Nephelium lappacum. G. Gnemon was able to reduce 11% of rainfall acidity, but N. Lappacum caused 13% increasing rainfall acidity. In this study, the main source of rainfall acidity was hidrogen from sulfate acid (54%), following by chloride acid (30%), and nitrate acid (16%).
LEAF AREA INDEX DERIVED FROM HEMISPHERICAL PHOTOGRAPH AND ITS CORRELATION WITH ABOVE-GROUND FOREST BIOMASS Basuki, Tyas Mutiara
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

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Abstract

LEAF AREA INDEX DERIVED FROM HEMISPHERICAL PHOTOGRAPH AND ITS CORRELATION WITH ABOVEGROUND FOREST BIOMASS Basuki, Tyas Mutiara
Indonesian Journal of Forestry Research Vol 2, No 1 (2015): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2015.2.1.%p

Abstract

Leaf area index (LAI) is one of key physical factors in the energy exchange between terrestrial ecosystem and atmosphere. It determines photosynthesis process to produce biomass and plays an important role in performing forest stand reflectance, therefore building relationships between LAI and biomass from field measurement can be used to develop allometric equations for biomass estimation. The purposes of this research are: 1). To develop relationships between diameter at breast height (DBH) and crown biomass (leaves; leaves + twigs + branches;  2).To develop relationships between leaf area index (LAI) and crown biomass; LAI and Total Above-ground Biomass (TAGB). A destructive sampling was conducted to build allometric equations. The DBH measurements from 52 sample plots were used to build relationships between DBH and crown biomass, as well as LAI and crown biomass and also TAGB. A hemispherical photograph was used to record LAI. The research was carried out in East Kalimantan. The results showed that strong coefficient of determinations (r2) were found between natural logarithmic (ln) DBH and crown biomass ranging from 0.77 to 0.93. The correlations (r) between LAI and leaves; leaves+twigs+branches; TAGB were arround 0.75 and the r2 were 0.564; 0.570; and 0.572, respectivelly.  Although LAI measuremnt using hemispherical is considered tedious, however the results are useful for validation of LAI measueremnts using remote sensing techniques. Improvement of r2 between LAI and biomass can be conducted by proper time of LAI measurement, immediately after sunrise or sunset.
INDIKATOR DAN PARAMETER KRITERIA LAHAN UNTUK MONITORING DAN EVALUASI KINERJA SUB-DAS Basuki, Tyas Mutiara
Jurnal Penelitian Hutan dan Konservasi Alam Vol 11, No 3 (2014): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

Indikator dan parameter untuk monitoring dan evaluasi (monev) kinerja daerah aliran sungai (DAS) yang ada saat ini cukup yang rumit, sehingga menyulitkan pelaksana di lapang. Untuk itu diperlukan indikator danparameter sederhana namun secara ilmiah dapat diterima.Studi ini ditujukan untuk mengevaluasi  indikator dan parameter kriteria lahan dari pedoman monev DAS yang sudah ada dan mendapatkan indikator danparameter yang lebih mudah penerapannya. Penelitian dilakukan dengan pendekatan sub-DAS yang terletak dalam Kabupaten dominan, yaitu sub-DAS Samin. Penelitian ini mengevaluasi  kriteria lahan yang ada dibuku Pedoman Monev DAS yang dikeluarkan oleh Ditjen Rehabilitasi Lahan dan Perhutanan Sosial. Untuk menyederhanakan metode yang sudah ada, beberapa skenario  menggunakan beberapa indikator dan parameter dibuat untuk monev kinerja sub-DAS. Hasil penelitian menunjukkan bahwa metode yang diusulkan menggunakan Indeks Penutupan Lahan (IPL), pengelolaan lahan dan praktek konservasi tanah(CP) menghasilkan skor yang sama dengan metode yang telah ada. Selain itu, alternatif lain yang menghasilkan kategori yang sama adalah menggunakan indikator/parameter IPL, IKPL dan CP, namun penggunaan Indeks Kemampuan Penggunaan Lahan (IKPL) membutuhkan data yang relatif banyak. Evaluasi kinerja sub-DAS Samin dengan menggunakan indikator dan parameter dari metode yang sudah ada dan metode yang diusulkan menunjukkan hasil yang sama yaitu kinerja sub-DAS Samin dikategorikan agak buruk.
CARBON STOCK ASSESSMENT IN PINE FOREST OF KEDUNG BULUS SUB-WATERSHED (GOMBONG DISTRICT) USING REMOTE SENSING AND FOREST INVENTORY DATA Basuki, Tyas Mutiara; Wahyuningrum, Nining
Indonesian Journal of Forestry Research Vol 10, No 1 (2013): Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2013.10.1.21-30

Abstract

Carbon stock in tree biomass can be quantified directly by cutting and weighing trees. It is assumed that 50% of the dry weight of biomass consists of carbon. This direct measurement is the most accurate method, however for large areas it is considered time consuming and costly. Remote sensing has been proven to be an important tool for mapping and monitoring carbon stock from landscape to global scale in order to support forest management and policy practices. The study aimed to (1) develop regression models for estimating carbon stock of pine forests using field measurement and remotely sensed data; and (2) quantify soil carbon stock under pine forests using field measurement. The study was conducted in Kedung Bulus sub-watershed, Gombong - Central Java. The derived data from Satellite Probatoire dObservation de la Terre (SPOT) included spectral band 1, 2, 3, and 4, Normalized Differences Vegetation Index (NDVI), and Principle Component Analysis (PCA) images. These data were integrated with field measurement to develop models. Soil samples were collected by augering for every 20 cm until a depth of  100 cm. The potential of  remote sensing to estimate carbon stock was shown by the strong correlation between multiple bands of SPOT (band 2 , 3; band 1, 2, 3; band 1, 3, 4; and band 1, 2, 3, 4) and carbon stock with r = 0.76, PCA (PC1, PC2, PC3) and carbon stock with r = 0.73. The role of pine forest to reduce CO2 in the atmosphere was demonstrated by the amount of carbon in the tree and the soil. Carbon stock in the tree biomass varied from 26 to 206 Mg C ha-1 and in the soil under pine forest ranged from 85 to 194 Mg C ha-1.
KAJIAN KUANTIFIKASI KANDUNGAN KARBON PADA HUTAN TANAMAN JATI Basuki, Tyas Mutiara; Dwi R, Heru; Sukresno, Sukresno
Jurnal Penelitian Hutan dan Konservasi Alam Vol 5, No 1 (2008): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

ABSTRAKHutan menutupi seperempat bagian dari wilayah daratan di dunia dan memainkan peran yang penting di dalam memelihara lingkungan global seperti pencegahan banjir, pengendalian proses pemadang-pasiran dan penyerapan serta fiksasi CO2 . Hutan telah semakin berkurang yang disebabkan oleh kegiatan tebas dan bakar, penebangan pohon secara berlebihan untuk mendapatkan kayu bakar serta kayu komersil, dan oleh konversi dari tanah-tanah hutan menjadi tanah-tanah pertanian. Bumi kita sekarang terbuka terhadap bahaya dari  pemanasan  global.  Dipercayai  bahwa  sejumlah  besar  CO 2   dan  beberapa  Gas  Rumah  Kaca  lain dilepaskan oleh kegiatan-kegiatan ekonomi dan membentuk suatu lapisan sekeliling bumi, yang menahan energi matahari dan mengakibatkan peningkatan dari suhu rata-rata. Perubahan iklim yang disebabkan oleh pemanasan itu telah mendatangkan lebih banyak bencana-bencana alam daripada sebelumnya di berbagai belahan dunia. Memahami situasi demikian, BP2TP-DAS-IBB melakukan studi untuk mengumpulkan dan menganalisis berbagai data guna mengkuantifikasikan kandungan karbon dalam biomassa dengan membuat persamaan allometrik tegakan jati (Tectona grandis LINN) sebagai salah satu jenis unggulan dalam pembangunan hutan tanaman industri. Dalam penelitian ini,  lokasi yang dipilih  adalah hutan tanaman jati pada Kesatuan Pemangkuan Hutan (KPH) Perum Perhutani Cepu, Unit II Jawa Tengah. Penelitian yang dilakukan merupakan pengamatan terhadap kondisi yang ada dan tidak melakukan perlakuan. Metode yang digunakan untuk mengetahui rosot karbon dalam tanaman adalah dengan pendekatan IPCC Guidelines. Dalam penelitian ini diasumsikan bahwa jumlah karbon yang dapat diserap dan disimpan oleh tanaman sama dengan jumlah karbon yang terdapat dalam biomassa tanaman tersebut. Hasil penelitian ini menunjukkan bahwa  persamaan korelasi  antara  umur  tegakan/tanaman dengan  diameter,  berat  kering  total  biomassa dengan diameter, dan kandungan karbon dengan diameter, memberikan nilai koefisien determinasi yang tinggi. Ini berarti, persamaan-persamaan tersebut dapat digunakan untuk mengestimasi kandungan karbon tegakan/tanman jati.
Specific Peak Discharge of Two Catchments Covered by Teak Forest with Different Area Percentages Basuki, Tyas Mutiara; Adi, Rahardyan Nugroho; Wijaya, Wahyu Wisnu
Forum Geografi Vol 31, No 1 (2017): July 2017
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v31i1.3236

Abstract

In watershed area, forest has important roles in relation with peak discharge. This  research was conducted to study the impacts of teak forest on peak discharge. On-screen digitizing of IKONOS imagery was done to classify the land cover of the study area. Kejalen and Gagakan catchments covered by old teak forests by 74% and 53% respectively, were chosen as the study area. These catchments are located in Blora Regency. Automatic streamflow recorder was set at the outlet of each catchment and subsequently, peak discharges were examined from the recorded data. During the observation, there were 36 evidences of specific peak discharge. The results showed that a trend of lower peak discharges occurred in Kejalen catchment which has the higher percentage of teak forest area  in compared to Gagakan catchment with lower percentage of teak forest area, except when extreme rainfalls happened. At rainfall of 163 mm/day, specific peak discharge in Kejalen was higher than in Gagakan catchment. Although there is a relationship between specific peak discharge and the percentage of forest cover area, the increase of specific peak discharge is not only affected by forest cover, but also affected by daily rainfall, antecedent soil moisture, and rainfall intensity. Coefficients of determination between specific peak discharge and daily rainfall are 0.64 and 0.61 for Kejalen and Gagakan catchments, respectively.
The Effectiveness of Canopi to Reduce Rainfall Acidity in the Industrial Area at Medan Basuki, Tyas Mutiara
Forum Geografi Vol 15, No 2 (2001): December 2001
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v15i2.4575

Abstract

The term of acid rain is referred to the mean rainfall with a pH less than 5.65. The element of SOx and NOx are the major sources of acid rain. These two elements are oxidized into S04 and N03 respectively in the air. Sulfate and nitrate are water soluble and the primary sources of hydrogen ions in acid precipitation. Rain passing through a tree canopy may lose or gain mineral elements through some combination of natural process of absorption and leaching. By this process, the canopy may reduce rainfall acidity and negative effects of the acid rain which will enter into the soil. Due to characteristic differences among tree canopies, a study to evaluate effectiveness of the trees in reducing rainfall acidity was done. In this study, rainfall and through fall were collected every single rain and the pH measured by portable pH-meter. Based on data collection during 3 months in Medan Industrial Estate, it found that the mean pH of rainfall was 5, 15. The highest pH of through fall was found from Gnetum gnemon, that was 5.70, following by Mimusops elengi, Filicium decipiens, Adacia mangium and the lowest was Nephelium lappacum. G. gnemon was able to reduce 11% of rainfall acidity, but N. lappacum caused 13 %increasing rainfall acidity. In this study, the main source of rainfall acidity was hydrogen from sulfate acid (54%), following by chloride acid (30%) and nitrate acid (16%).
The Effectiveness of Canopy Trees to Reduce Rainfall Acidity in the Industrial Area at Medan Basuki, Tyas Mutiara
Forum Geografi Vol 14, No 2 (2000)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/forgeo.v14i2.442

Abstract

The term of acid rain is referred to the mean rainfall with a pH less than 5,65. The element of Sox and Nox are the major sources of aid rain. These two elements are oxidized into SO4 and NO3 respectively in the air. Sulfate and Nitrate are water soluble and the primary sources of hydrogen ions in acid precipitation. Rain passing through a tree canopy may lose or gain mineral elements trough some combination of natural process of absorption and leaching. By this process, the canopy may reduce rainfall acidity and negatif effects of the acid rain which will enter into the soil. Due to characteristic differences among tree canopies, a study to evaluate effectiveness of the trees in reducing rainfall acidity was done. In this study, rainfall and troughfall were collected every single rain and the pH measure by portable pH-meter. Based on data collection during 3 months in Medan Industrial Estate, it found that the mean pH of rainfall was 5,15. The highest pH of throughfall was found from Gnetum gnemon, that was 5,70; following by Mimusops elengi, Filicium decipiens, Acacia mangium, and the lowest was Nephelium lappacum. G. Gnemon was able to reduce 11% of rainfall acidity, but N. Lappacum caused 13% increasing rainfall acidity. In this study, the main source of rainfall acidity was hidrogen from sulfate acid (54%), following by chloride acid (30%), and nitrate acid (16%).
Co-Authors Budi Heru Santosa Chulafak, Galdita Aruba Diah Auliyani FAJAR SETIAWAN Heru Dwi R, Heru Irfan Budi Pramono Nada, Firda Maftukhakh Hilmya Nining Wahyuningrum Rahardyan Nugroho Adi, Rahardyan Nugroho Rahmadya, Aldiano Sukresno Sukresno Wahyu Wisnu Wijaya, Wahyu Wisnu