Greenhouse Gas Estimation in Various Water Management Using Denitrification-Decomposition Model (DNDC)

Jurnal Irigasi

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Title Greenhouse Gas Estimation in Various Water Management Using Denitrification-Decomposition Model (DNDC)
Estimasi Gas Rumah Kaca pada Berbagai Macam Pengelolaan Air Menggunakan Model Denitrifikasi-Dekomposisi (DNDC)
 
Creator Rahmat, Arif
Arif, Chusnul
Chadirin, Yudi
 
Subject DNDC, emission, estimation, greenhouse gas, water regime
DNDC; emisi; estimasi; gas rumah kaca; rejim air
 
Description Escalation of the scarcity in water resources has stimulated the development of a different method to preserve water in the paddy field. Several studies have been carried out simultaneously to observed the effectiveness of various water regimes on sustaining water, mitigating greenhouse gases (GHG), and maintaining rice yields. Irrigation management is a critical factor in controlling Methane (CH4) and Nitrous oxide (N2O) emission in the paddy field. The aim of this research is to evaluate the Denitrification-Decomposition (DNDC) Model in estimated greenhouse gas from various water regime management. This research conducted from January until May 2018, in plot experiment used SRI method under three different water regimes: flooding regime (RT), wet regime (RB), and dry regime (RK). DNDC Model was created to predicted CH4 and N2O emission in the agricultural ecosystem. This model already used and evaluated in subtropical land, but the ability of this model still needs to evaluate for soil in the tropical area such as Indonesia. The emission result showed a different pattern between the simulation model and observation model. The coefficient of determination (R2) from CH4 and N2O emission simulation with actual fluxes are 0.123 and -0.237. The finding in this study indicated that the simulation model needed improvement to be able to estimate the CH4 and N2O emissions from Indonesia’s environmental condition.
Peningkatan kelangkaan sumber daya air menstimulasi pengembangan berbagai metode untuk menjaga air pada lahan padi. Beberapa penelitian telah dilakukan secara berkelanjutan dalam mengamati efektivitas berbagai rejim air dalam menjaga air, mengurangi fluks gas rumah kaca (GRK), dan mempertahankan hasil panen padi. Pengelolaan irigasi merupakan faktor penting dalam mengendalikan emisi metana (CH4) dan dinitrogen oksida (N2O) di lahan sawah. Penelitian ini bertujuan untuk mengevaluasi Model Denitrifikasi-Dekomposisi (DNDC) dalam mengestimasi emisi gas rumah kaca dari berbagai macam pengelolaan rejim air. Penelitian dilakukan dari Januari hingga Mei 2018. Metode SRI digunakan dalam percobaan plot dengan perlakuan tiga rejim air yang berbeda: rejim tergenang (RT), rejim basah (RB), dan rejim kering (RK). Model DNDC dibuat untuk memprediksi emisi CH4 dan N2O dalam ekosistem pertanian. Model ini telah digunakan dan dievaluasi di tanah subtropis, tetapi model ini masih perlu dievaluasi kemampuannya untuk tanah di iklim tropis seperti Indonesia. Emisi yang dihasilkan menunjukkan pola berbeda antara model simulasi dan model observasi. Nilai R2 dari simulasi emisi CH4 dan N2O dengan fluks aktual masing-masing adalah 0,123 dan -0,237. Temuan dari penelitian menunjukkan bahwa model simulasi memerlukan pengembangan untuk mampu memperkirakan emisi CH4 ­dan N2O pada kondisi lingkungan Indonesia.
 
Publisher Balai Penelitian dan Pengembangan Irigasi
 
Contributor

 
Date 2019-01-27
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion


 
Format application/pdf
 
Identifier http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/220
10.31028/ji.v13.i1.11-20
 
Source Jurnal Irigasi; Vol 13, No 1 (2018): Jurnal Irigasi; 11-20
Jurnal Irigasi; Vol 13, No 1 (2018): Jurnal Irigasi; 11-20
2615-4277
1907-5545
 
Language ind
 
Relation http://jurnalirigasi_pusair.pu.go.id/index.php/jurnal_irigasi/article/view/220/300
 
Rights Hak Cipta (c) 2018 Jurnal Irigasi
 

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