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Methane uptake in semiarid farmland subjected to different mulching and nitrogen fertilization regimes

文献类型：期刊论文

作者Liu, Jianliang1,2; Chen, Xinping3; Zhan, Ai2,3; Luo, Shasha2,4; Chen, Huai1; Jiang, Haibo1; Huang, Xinya1; Li, Shiqing2
刊名BIOLOGY AND FERTILITY OF SOILS
出版日期2016-10
卷号52期号:7页码:941-950
关键词Methane uptake Plastic film mulching Gravel mulching Nitrogen fertilization Semiarid areas Soil variables
ISSN号0178-2762
DOI10.1007/s00374-016-1129-1
产权排序1
文献子类Article
英文摘要Methane (CH4) uptake by dryland soils is an important part in the global CH4 budget and is sensitive to the management practice. This research measured the annual CH4 flux over 2 years at the rain-fed maize fields in semiarid northwestern China using the static chamber technique. Methane uptake was measured under three mulching practices with the same nitrogen (N) application: no mulching (NM), gravel mulching (GM), and plastic film mulching (FM). In addition, methane uptake was also measured under film mulching management and three different N fertilizer rates: 0 (N0), 250 (N250), and 380 (N380) kg N ha(-1). The results showed that the rain-fed maize fields acted as a sink for CH4, with the annual mean uptake rate of 21.3-40.8 mu g CH4-C m(-2) h(-1). The soil CH4 uptake was positively correlated with soil temperature, but negatively correlated with soil moisture; these two factors together explained 35.5-50.9 % of the variance in CH4 uptake. Compared to the NM treatment, the mulching treatments markedly increased the topsoil temperature, but the annual CH4 uptake was significantly reduced by 5.2-6.7 % in the GM treatment and by 26.3 % in the FM treatment, most likely because the increased soil moisture restricted CH4 oxidation and diffusion. The CH4 uptake showed an increasing tendency with the N rate, probably because N fertilization decreased soil moisture and increased soil NO3 (-) content. These results help in understanding the effects of agricultural managements on CH4 uptake and to properly assess the role of dryland soils in the global CH4 budget.
学科主题Environment ; Ecology
URL标识查看原文
WOS关键词GREENHOUSE-GAS EMISSIONS ; USE EFFICIENCY ; CROPPING SYSTEMS ; NORTHERN CHINA ; SOIL ; MAIZE ; TEMPERATE ; OXIDATION ; FLUXES ; N2O
WOS研究方向Agriculture
语种英语
WOS记录号WOS:000384420200004
出版者SPRINGER
源URL[http://210.75.237.14/handle/351003/29790]  
专题生物多样性与生态系统服务领域_生态研究
生物多样性与生态系统服务领域_中国科学院山地生态恢复与生物资源利用重点实验室
生物多样性与生态系统服务领域_生态系统恢复与生物多样性保育四川省重点实验室
作者单位1.Key Laboratory ofMountain Ecological Restoration and Bioresource Utilization & Ecological Restoration Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu Institute of Biology,Chinese Academy of Sciences, Chengdu 610041, China;
2.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, China;
3.Center for Resources, Environment and Food Security, China Agricultural University, Beijing 100193, China;
4.Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
推荐引用方式
GB/T 7714		 Liu, Jianliang,Chen, Xinping,Zhan, Ai,et al. Methane uptake in semiarid farmland subjected to different mulching and nitrogen fertilization regimes[J]. BIOLOGY AND FERTILITY OF SOILS,2016,52(7):941-950.
APA Liu, Jianliang.,Chen, Xinping.,Zhan, Ai.,Luo, Shasha.,Chen, Huai.,...&Li, Shiqing.(2016).Methane uptake in semiarid farmland subjected to different mulching and nitrogen fertilization regimes.BIOLOGY AND FERTILITY OF SOILS,52(7),941-950.
MLA Liu, Jianliang,et al."Methane uptake in semiarid farmland subjected to different mulching and nitrogen fertilization regimes".BIOLOGY AND FERTILITY OF SOILS 52.7(2016):941-950.

入库方式： OAI收割

来源：成都生物研究所

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