GASEOUS REACTIVE NITROGEN LOSSES FROM ORCHARDS,VEGETABLES AND TEA PLANTATIONS  

作　　者：Jinyang WANG Pinshang XU Haiyan LIN Shumin GUO Zhaoqiang HAN Jianwen ZOU 

机构地区：[1]Key Laboratory of Green and Low-carbon Agriculture in Southeastern China,Ministry of Agriculture and Rural Affairs,College of Resources and Environmental Sciences,Nanjing Agricultural University,Nanjing 210095,China [2]Jiangsu Key Laboratory of Low Carbon Agriculture and GHGs Mitigation,Jiangsu Collaborative Innovation Center for Solid Organic Waste Resource Utilization,Nanjing 210095,China.

出　　处：《Frontiers of Agricultural Science and Engineering》2023年第2期155-166,共12页农业科学与工程前沿（英文版）

基　　金：financially supported by the Jiangsu Provincial Special Project for Carbon Peak Carbon Neutrality Science and Technology Innovation(BE2022423,BE2022308);the National Natural Science Foundation of China(42177285,42007072);the Startup Foundation for Introducing Talent of Nanjing Agricultural University(030/804028)。

摘　　要：Nitrogen fertilizer application has accelerated the agricultural soil N cycle while ensuring food security.Gaseous reactive N emissions from orchards,vegetables and tea plantations(OVT)are less understood than those from cereal crops.This paper presents a compilation of data on soil ammonia,nitrous oxide,and nitric oxide emissions from 1454 OVT systems at 184 unique experimental locations worldwide aiming to investigate their emission characteristics,emission factors(EF),and contribution to total farmland emissions.NH_(3)and N_(2)O emissions from orchards and N_(2)O and NO emissions from vegetable production were significantly higher in China than in the rest of the world,regardless of fertilizer application,while N_(2)O emissions from tea plantations were lower than for vegetables.The EF of NH_(3)for vegetables was close to the global mean value with urea application but significantly higher than that of orchards.The EF of N_(2)O in orchards and vegetables was comparable to the global median value,while in tea plantations,the value was 2.3 times higher than the global median value.Current estimates suggest that direct emissions of NH_(3),N_(2)O,and NO from OVT systems are equivalent to approximately a quarter,two thirds and a half of the total farmland in China,respectively.Future research needs to strengthen observational field studies in establishing standard sampling methods for gaseous N emissions and implementing knowledge-based management measures to help achieve the green development of agriculture.

关 键 词：FRUIT greenhouse gas green development fertilizer management climate change 

分 类 号：S181[农业科学—农业基础科学]