Predicting plant-soil N cycling and soil N_(2)O emissions in a Chinese old-growth temperate forest under global changes:uncertainty and implications

作     者：Weiwei Dai Edith Bai Wei Li Ping Jiang Guanhua Dai Xingbo Zheng 

作者机构：CAS Key Laboratory of Forest Ecology and ManagementInstitute of Applied EcologyChinese Academy of SciencesShenyang 110016China College of Land Resource and EnvironmentJiangxi Agricultural UniversityNanchang 330045China Key laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi ProvinceNanchang 330045China School of Geographical SciencesNortheast Normal UniversityChangchun 130024China College of Resources and EnvironmentUniversity of Chinese Academy of SciencesBeijing 100049China Research Station of Changbai Mountain Forest EcosystemsChinese Academy of SciencesErdaobaihe 133600China 

出 版 物：《Soil Ecology Letters》 (土壤生态学快报（英文）)

年 卷 期：2020年第2卷第1期

页      面：73-82页

学科分类：0710[理学-生物学] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0818[工学-地质资源与地质工程] 09[农学] 0903[农学-农业资源与环境] 0901[农学-作物学] 0713[理学-生态学] 090301[农学-土壤学] 

基　　金：supported by the National Basic Research Program of China(973 program,2014CB954400) the National Natural Science Foundation of China(41401289) 

主　　题：Global change DayCent Denitrification Nitrification Soil N_(2)O emission Temperate forest 

摘      要：Soil-emitted N_(2)O contributes to two-thirds of global N_(2)O emissions,and is sensitive to global *** used DayCent model to simulate major plant-soil N cycling processes under different global change scenarios in a typical temperate mixed forest in north-eastern *** scenarios included warming(T),elevated atmospheric CO_(2) concentration([CO_(2)])(C),increased N deposition(N)and precipitation(P),and their full factorial *** responses of plant-soil nitrogen cycling processes including net N mineralization,plant N uptake,gross nitrification,denitrification and soil N_(2)O emission were *** increase of elevated[CO_(2)]and N deposition displayed most strong interactive effects on most *** the results from experimental studies for evaluation,simulation uncertainty was highest under elevated[CO_(2)]and increased precipitation among the four global change factors.N deposition had a fundamental impact on soil N cycle and N_(2)O emission in our studied *** forest soil acting as a N sink for added N,scenarios which included increased N deposition showed higher cumulative soil N_(2)O emissions(summed up from 2001 to 2100).In particular,the scenario which included T,P,and N had the largest cumulative soil N_(2)O emission,which was a 24.4% increase over that under ambient *** study points to the importance of the interactive effects of global change factors on plant-soil N cycling and the necessity of multi-factor manipulation experiments.