Pengembangan Model Denitrification Decomposition (DNDC) Untuk Pendugaan Emisi Gas Metana (CH4) Dari Lahan Padi Sawah

Fitriani Nurhayatin Nisha, Chusnul Arif

Abstract


Cultivated paddy fields that applied in Indonesia currently produces high emissions of greenhouse gases (GHG), particularly methane gas (CH4). This research aimed to analyze CH4 gas emission in various water management, and to develop DNDC model in predicting CH4 gas emission. This research was conducted from January to May 2018, located at field laboratory of Departement of Civil and Environmental Engineering. The research was conducted by three water regimes i.e., continuously flooded (RT) for conventional rice farming, wet regime (RB), and dry regime (RK) for system of rice intensification (SRI). The highest total methane (CH4) flux was 48.74 kg/ha on RT, on RB was 3.59 kg/ha and on RK -5.40 kg/ha. DNDC model needed data inputs of climate, soil physics, vegetation and anthropogenic activities. The result of the DNDC model showed that the highest total CH4 flux was 44.44 kg/ha on RT, on RB was 17.88 kg/ha and on RK was 0.02 kg/ha. The result, of total actual of CH4 gas flux was compared with DNDC model and got the coefficient of determination (R2) values 0.93, so the model could be used to predict total CH4 gas emission.


Full Text:

PDF

References


[IAEA] International Atomic Energy Agency. 1993. Manual on Measurement of Methane and Nitrous Oxide Emission from Agriculture. Vienna (AUT): IAEA.

[IPCC] Intergovernmental Panel on Climate Change. 1990. Climate Change. The Scientific assessment. Cambridge. University Press. Cambridge.

Arif C, Masaru M, Setiawan BI, Ryoici D. 2013. Optimizing Water Management of System of Rice Intensification for Climate Change Adaptation Strategy Based on Field Monitored Data. GRENE 2nd workshop, 4-6 Maret 2013, Baguio, Philippine.

Asri F. 2010. Pengaruh Imbangan Pupuk Organik Dan Pupuk Anorganik Terhadap Emisi Gas Metana (CH4) Di Lahan Sawah Palur [Skripsi]. Surakarta (ID):Universitas Sebelas Maret.

Babu Y, Jagadeesh C, Li S. Frolking DR, Nayak TK, Adhya. 2006. Field validation of DNDC model for methane and nitrous oxide emissions from rice based production systems of India. Nutrient Cycling in Agroecosystems. 74:157- 174.

Dwijayanti Y. Pendugaan Emisi Gas Metana (CH4) pada Berbagai Pengelolaan Tanaman Padi [Skripsi]. Bogor (ID) : Institut Pertanian Bogor.

Hadi A. 2001. Makalah pada Seminar on-Air Bioteknologi untuk Indonesia Abad 21. 1-14 Februari 2001. Sinergy Forum – PPI Tokyo Institute of Technology.

Jonathan LJ, Jonathan DD. 2004. Systemic analysis of bicistronic reporter assay data. Nucleic Acids Research. 32(20):2-10.

Kartohardjono S, Yuliusman, Budhie DS. 2011. Preliminary studies on the selective absorption of CO2 from CH4 through hollow fiber membrane contractor using aqueous extract of noni fruit (morinda citrifolia). International Journal of Technology. 2:147-155

Lelieveld J, Crutzen PJ, Bruhl C. 1992. Climate effects of athmospheric methane. Chemosphere 26 (1-4):739-769.

Li C. 1998. Modeling trace gas emissions from agricultural soils. [abstrak]. Di dalam: IRRI-UNDP Final Workshop; Beijing & Hangzhou, 10-13 August 1998. Beijing & Hangzhou: IRRI. hlm. 15. Abstr no 12.

Neue H. 1993. Methane emission from rice fields: Wetland rice fields may make a major contribution to global warming. Bioscience. 43 (7): 466-73.

Palimbani. 2007. Mengenal Pupuk Urea . Blog Pustaka Negeri WordPress.com dipetik 15 Juli 2018 dari http://pusri.wordpress.com/2007/09/22/mengenal pupuk-urea/.

Setyanto P, Abubakar . 2005. Methane Emission from Paddy Fields as Influenced by Different Water Regimes in Central Java. Indonesian Journal of Agricultural Science. 6:1-9.

Suharsih ST, Makarim AK. 2002. Pengaruh Cara Pengolahan Tanah dan Pengaturan Air Terhadap Emisi Gas Metana Pada Lahan Sawah Irigasi. Prosiding Seminar Nasional Sistem Produksi Tanaman Pangan Berwawasan Lingkungan. Bogor (ID):Pusat Penelitian dan Pengembangan Tanah

Sujono J. 2011. Koefisien Tanaman Padi Sawah pada Sistem Irigasi Hemat Air. Agritech. 31 (4):344-351.

Susandi A. 2004. The Impact of International Greenhouse Gas Emissions Reduction on Indonesia. Report on Earth System Science, Max Planck Institute for Meteorology. Jerman