[1]王 霞,杜岩功*,郭小伟.Meta分析模拟氮沉降对我国北方草地氧化亚氮排放速率的影响[J].山地学报,2021,(3):338-345.[doi:10.16089/j.cnki.1008-2786.000600]
 WANG Xia,DU Yangong*,GUO Xiaowei.Effect of Nitrogen Deposition on Grasslands Nitrous Oxide Emission Rates by Meta-Analysis Method[J].Mountain Research,2021,(3):338-345.[doi:10.16089/j.cnki.1008-2786.000600]
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Meta分析模拟氮沉降对我国北方草地氧化亚氮排放速率的影响
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2021年第3期
页码:
338-345
栏目:
山地环境
出版日期:
2021-07-10

文章信息/Info

Title:
Effect of Nitrogen Deposition on Grasslands Nitrous Oxide Emission Rates by Meta-Analysis Method
文章编号:
1008-2786-(2021)3-338-8
作者:
王 霞1 杜岩功2* 郭小伟2
1. 莱芜职业技术学院 园林工程技术教研室, 山东 莱芜 271100; 2. 中国科学院西北高原生物研究所, 西宁810001
Author(s):
WANG Xia1 DU Yangong2* GUO Xiaowei2
1. Laiwu Vocational and Technical College, garden engineering division, Laiwu 271100,Shandong, China; 2. Northwest Institute of Plateau Biology, Chinese Academy of Science, Xining 810008, China
关键词:
氮沉降 Meta分析 草地生态系统 随机效应模型 平均效应值
分类号:
Q148
DOI:
10.16089/j.cnki.1008-2786.000600
文献标志码:
A
摘要:
氧化亚氮(N2O)是三大温室气体之一,氮沉降显著提高土壤氮素供给水平,可能会大幅增加草地生态系统N2O排放速率。北方草地是我国重要的生态安全屏障和畜牧业基地,但目前有关氮沉降对我国北方草地生态系统N2O排放速率的影响强度及主要调控因素尚不清楚。本研究采用Meta方法,通过对中国北方草地已开展的32个实验结果进行综合分析。结果发现:模拟氮沉降对中国草地生态系统N2O排放的平均效应值为0.82 ± 0.11(95%置信区间0.61~1.02),氮沉降极显著地增加了我国草地N2O排放速率(P <0.001)。不同氮素类型对平均效应值存在显著性影响,顺序依次为硫酸铵、尿素、硝酸钠、硝酸铵、家畜尿液。施用氮素剂量、土壤有机碳含量、气温和海拔对平均效应值均具有显著性影响,氮素剂量和土壤有机质含量可以解释效应值变异的47.31%和45.27%。氮沉降的平均效应值与氮素剂量和气温之间存在极显著正相关关系,而与土壤有机碳和海拔间存在极显著负相关关系。通过对退化草地的恢复治理、提高土壤有机碳含量可大幅降低氮沉降对我国草地生态系统N2O排放的激发效应。

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备注/Memo

备注/Memo:
收稿日期(Received date):2020-07-27; 改回日期(Accepted date): 2021-04-05
基金项目(Foundation item):国家自然科学基金(31770532); 中国科学院西部之光西部青年学者项目 [National Natural Science Foundation of China(31770532); Youth Scholar Project of Western Light of Chinese Academy of Sciences]
作者简介(Biography):王霞(1982-), 女, 山东淄博人, 硕士, 讲师, 主要研究方向:草地生态系统氮素循环及其环境效应。[WANG Xia(1982-), female, born in Zibo, Shandong province, M.Sc., lecturer, researched on grassland nitrogen cycling and its environment effects] E-mail: 825252@163.com
*通讯作者(Corresponding author):杜岩功(1981-), 男, 博士, 研究员, 主要研究方向:草地生态系统与全球变化。 [DU Yangong(1981-), male, Ph.D., professor, specialized in grasslands ecosystems and global change] E-mail:ygdu@nwipb.cas.cn
更新日期/Last Update: 2021-05-30