中国农业氧化亚氮的排放量和减缓对策

本文对中国农业氧化亚氮的排放量进行了计算和预测，在此基础上提出了某些减缓排放对策。我国农业氧化亚氮年排放量呈增加趋势，约占全球年总排放量的１－１．５％。在农业氧化亚氮三大排放源中，土壤源占我国农业氧化亚氮年排放量的７２％左右，生物质燃烧和化肥分解各占１１％和１７％。到２０００年和２０３０年，总排放量将增至０．１２８０ＴｇＮ＿２ｏ－Ｎ／年和０．１４４３ＴｇＮ＿２Ｏ－Ｎ／年。文中对生物燃烧和化肥分解二大源提出了减缓对策，并进行了生态和经济效益分析。

Nitrous Oxide Emission from ChineseAgricultural System and Emission R-eduction Technologies

Abstract,This paper reports the calcul-ated and predicted results on nit-rious oxide emission form Chineseagricultural system and emissionreduction technologies.In our co-untries the nitrous oxide emissionfrom agricultural system is incre-asing, up to 1-1.5 percent of thegloba emission. Among three sou-rces of nitrous oxide emission fromagricultural svstem, soil is about72 percent, biomass burning andfertilizer decomposing account for11 and 17 percent respectivel.Bythe year of 2000 and 2030, it isestimated that the total emissionmay increase to 0.1280TgN_2O-N/year and 0.1443Tg N_2O-N/year.This paper also discusses the emi-ssion reduction technologies on b-iomass burning , ferti1izer decomp-osing and gives loss-benefit anal-ysis.