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学科主题: 生物科学::普通生物学
题名: Nitrous oxide emissions from different land uses affected by managements on the Qinghai-Tibetan Plateau
作者: Zhang, ZH (Zhang, Zhenhua)1; Zhu, XX (Zhu, Xiaoxue)1, 4; Wang, SP (Wang, Shiping)2, 3; Duan, JC (Duan, Jichuang)5; Chang, XF (Chang, Xiaofeng)6; Luo, CY (Luo, Caiyun)1; He, JS (He, Jin-Sheng)1, 7; Wilkes, A (Wilkes, Andreas)8
通讯作者: Wang, SP
关键词: GREENHOUSE-GAS EMISSIONS ; ALPINE MEADOW ; N2O EMISSIONS ; TILLAGE SYSTEMS ; CARBON-DIOXIDE ; NO-TILL ; SOIL ; GRASSLAND ; ECOSYSTEM ; CLIMATE
刊名: AGRICULTURAL AND FOREST METEOROLOGY
发表日期: 2017
DOI: 10.1016/j.agrformet.2017.06.013
卷: 246, 期:0, 页:133-141
收录类别: SCI
合作性质: 国际
文章类型: Article
类目[WOS]: Agronomy; Forestry; Meteorology & Atmospheric Sciences ; Agriculture; Forestry; Meteorology & Atmospheric Sciences
研究领域[WOS]: Agriculture; Forestry; Meteorology & Atmospheric Sciences
英文摘要: We evaluated the N2O emissions from four land use types (a native alpine meadow with winter grazing (NAM), an abandoned pasture (APL), a perennial Elymus nutans Griseb. pasture (PEN) and an annual Avena saliva L. pasture (AAS)) with and without three management practices (nitrogen (N) fertilizer, sheep manure and no tillage (NT)) in a Gelic Cambisol soil underlying an alpine meadow on the Qinghai-Tibetan Plateau in 2009 and 2010. Our results show that, compared with NAM, APL had significantly higher cumulative-average seasonal N2O emissions. Converting unmanaged APL to PEN or AAS significantly increased cumulative-average seasonal N2O emissions by 35% and 75%, respectively. Sheep manure and N fertilizer application significantly increased N2O emissions due to increased soil inorganic N concentration. The effect of sheep manure addition on N2O emissions was lower than that of N fertilizer. For AAS, tillage significantly decreased the effect of sheep manure application on N2O emissions. Compared with tillage, NT significantly decreased N2O emissions from AAS. Therefore, our results suggest that cultivating natural grassland would increase N2O emissions, and fertilizer application would amplify the magnitude of emissions, whereas NT could mitigate the fertilizer impact on N2O emission. Furthermore, the structural equation analysis revealed that land use change affected N2O emissions directly by influencing the number of plant species and soil characteristics. There were two different underlying mechanisms regulating N2O emissions in response to N fertilizer and sheep manure addition.
语种: 英语
WOS记录号: WOS:000408782000013
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.itpcas.ac.cn/handle/131C11/7946
Appears in Collections:图书馆_期刊论文

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作者单位: 1.Chinese Acad Sci, Northwest Inst Plateau Biol, Haibei Alpine Grassland Ecosyst Res Stn, Key Lab Adaptat & Evolut Plateau Biota, Xining 810008, Qinghai, Peoples R China.
2.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Alpine Ecol & Biodivers, Beijing 100101, Peoples R China.
3.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China.
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China.
5.Binhai Res Inst Tianjin, Tianjin 300457, Peoples R China.
6.Northwest A&F Univ, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China.
7.Peking Univ, Dept Ecol, Yi Fu Bldg 2,5 Yiheyuan Rd, Beijing 100871, Peoples R China.
8.Dev Ltd, Bury St Edmunds IP33 3EQ, Suffolk, England.

Recommended Citation:
Zhang, ZH ,Zhu, XX ,Wang, SP ,et al. Nitrous oxide emissions from different land uses affected by managements on the Qinghai-Tibetan Plateau[J]. AGRICULTURAL AND FOREST METEOROLOGY,2017,246(0):133-141.
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