Greenhouse gas emissions from rice production in the Philippines based onlife-cycle inventory analysis

Author: Elmer G. Bautista 1 and Masanori Saito 2*
Received 8 September 2014, accepted 28 December 2014.

In the Philippines, the latest national inventory of greenhouse gas (GHG) emissions for rice production has been submitted to the UNFCCC using data of 1994. In the present study, we estimated GHG emissions from rice production in the Philippines—from seedbed preparation to harvesting and threshing—based on 2006–2007 national statistics. Because the rice production area in this country is mostly dichotomized into either irrigated or rainfed areas cultivated twice a year, we used different emission factors for the soil processes in each area. Emissions from farming activities included emissions from fertilizers, agricultural machinery manufacture, and fuel as well as emissions from water buffaloes (carabaos), a draft animal widely used among Philippine rice farmers. We estimated the total GHG emissions from rice production in the Philippines to be 13.3 Tg COeq. yr-1, which comprised 3,920 kg COeq. ha-1 crop-1 in irrigated areas and 1,381 kg COeq. ha-1 crop-1 in rainfed areas. These corresponded, respectively, to 0.93 kg COeq. kg grain-1 and 0.47 kg COeq. kg grain-1. A large proportion of the emissions was derived from soil processes such as CH4 and N2O emissions from soil. Emission from carabaos was 50 kg COeq. ha-1 irrespective of the water management regime. Emissions from fuel and other farming activities were 140 kg COeq. ha-1 crop-1 in irrigated areas and 111 kg COeq. ha-1 crop-1 in rainfed areas.

Journal: Food, Agriculture and Environment (JFAE)
Online ISSN: 1459-0263Year: 2015, Vol. 13, Issue 1, pages 139-144.Publisher: WFL.

Article Purchasing
Impact Factor

If you like to purchase this specific document  such as article, review or this journal issue, contact us.

Specify the title of the article or review, issue, number, volume and date of the publication.

Software and compilation, Science & Technology,  all rights reserved.

Your use of this website details or service is governed by terms of use.

Authors are invited to check from time to time news or information, read more>>>

Note to Users

The requested document is freely available only to subscribers/registered users with an online subscription to the Journal of Food, Agriculture & Environment. If you have set up a personal subscription to this title please enter your user name and password. All abstracts are available for free.