Slowing down the agricultural source greenhouse gas emissions need be

Slowing down the agricultural source greenhouse gas emissions need be assessed
Author: Pan Xi

It is reported " the agricultural source greenhouse gas emissions accounts for 17% of the total amount of greenhouse gas emissions of our country, but the discharge from agricultural source is the natural course of agricultural production, greenhouse gas emissions of the agricultural source belongs to ' survives and discharges '. Studies have suggested, through improving ruminant's nutrition, popularize the paddy field intermittence to irrigate, build marsh gas, pursue and clear up the fertile, long-efficiency fertilizer slowly, can slow down the agricultural source greenhouse gas emissions, but need carry on technology and economic assessment. "

This research report is published in the 10th issue of 2008 of " China's agriculture project journal ", is entitled as " agricultural source greenhouse gas emissions and technological countermeasure of emission reduction in China ", the first author is Dong HongMin, researcher of Chinese Academy of Agricultural Sciences.

More than 3000 professional committees (abbreviated as IPCC) of inter-governmental climatic change which experts finished in the world The fourth assessment report indicates, agriculture is mainly discharging the source of gas of the greenhouse. It is estimated agriculture discharge methane account for methane that human activity lead to the fact, discharge 50% of the total amount in the global range, it accounts for 60% to oxidize inferior nitrogen, if did not implement the extra agricultural policy, estimated until 2030, and 35% - 60% , Slowing down the agricultural source greenhouse gas emissions plays an important role in controlling global climatic change.

It is reported, agricultural source greenhouse gas emissions including methane of ruminant is discharged mainly, rice planting methane in the course discharge, apply fertilizer cause oxidize inferior the intersection of nitrogen and discharge and methane in the animal's offal management and oxidize inferior nitrogen to discharge. In agricultural source greenhouse gas emissions, it is sure to study to do in view of agricultural methane and oxidizing inferior nitrogen both at home and abroad, and launched typical test to the typical source; IPCC has published the global and common greenhouse gas emissions list and worked out the guide, has offered basis for estimating greenhouse gas emissions. Study economic prediction and impact on some single greenhouse gas emissions of various technological measures mainly concentrating on emission reduction of different fields in reduction of greenhouse gas discharge of the agricultural source, have not carried on systematic research to the emission reduction countermeasure of agriculture yet.

The article, according to the data of " the initial national information of climatic change of the People's Republic of China is notified " which China submit to the United Nations, analyze that obtains methane emerging in China's agricultural activity and oxidizes 50.15% and 92.47% that inferior nitrogen accounts for national methane and oxidizes inferior nitrogen emission respectively, the agricultural source greenhouse gas emissions accounts for 17% of the total amount of national greenhouse gas emissions. The article is still obtained on the basis of existing research results of comprehensive analysis, improve ruminant's nutrition to reduce the discharge of methane of single beef cattle through the ammoniation of the straw 15% - 30% ; Popularize the paddy field intermittence and irrigate and can reduce the paddy field methane discharge 30% of the unit area; Develop marsh gas project and improve the excrement and urine to collect and store the way and reduce the methane discharge of excrement and urine, every one can reduce gas carbon dioxide equivalent of 2.0- 4.1 tons of greenhouse in the high-temperature area of the South to the greatest extent every year with marsh gas; Pursue and clear up the fertile, long-efficiency fertilizer and can reduce the farmland of unit area and oxidize inferior nitrogen 50% - 70% slowly. But will popularize the technology of reduction of greenhouse gas discharge, will need to appraise adaptability and economy of the technology of emission reduction, propose launching the technology demonstration of emission reduction as soon as possible, offer technology and data basis for popularization of the technology of emission reduction.

Slowing down the agricultural source greenhouse gas emissions need be assessed