Arid
DOI10.1016/j.geoderma.2017.12.023
Detecting nonlinearity in the spatial series of nitrous oxide emission by delay vector variance
Zou, Wenxiu1; Ji, Wenjun2; Si, Bing Cheng3; Biswas, Asim4
通讯作者Biswas, Asim
来源期刊GEODERMA
ISSN0016-7061
EISSN1872-6259
出版年2018
卷号317页码:23-31
英文摘要

Soil spatial variability may exhibit nonlinearity and this has been assumed in studies without proper quantification. Owing to the complexity of underlying biogeochemical processes, greenhouse gas emission, in particular, nitrous oxide (N2O) flux from soil, is highly variable over space and time. The goal of this work was to examine the nonlinearity associated with the spatial series of N2O flux from soil using the delay vector variance (DVV) method. DVV uses the predictability of a spatial series in a phase-space to identify linearity/nonlinearity within a data series using a surrogate data methodology to derive a test statistic. A two-piece closed vented chamber was used to measure N2O fluxes along a transect of 128 points located within the hummocky landscape of central Saskatchewan, Canada. There was nonlinearity associated with the spatial series of early spring and spring measurements. The uneven distribution of snowmelt water facilitated the favourable situations for denitrifying bacterial activity creating hotspots for denitrification processes. The flux measured during the fall season exhibited a nonlinear pattern, whereas the flux measured during the time of plant growth exhibited a linear pattern over space. Strong evapotranspiration demand during the growing season in the semi-arid climate of the study area controlled the hydrological processes and thus, the spatial N2O flux measurements giving rise to a linear spatial pattern. The DVV detected nonlinearity in a spatial series will improve the understanding of the complexity of underlying soil processes.


英文关键词Nonlinearity Data analysis Spatial and temporal variability Greenhouse gas Climate change
类型Article
语种英语
国家Peoples R China ; Canada
收录类别SCI-E
WOS记录号WOS:000424729100004
WOS关键词SOIL-WATER STORAGE ; HUMMOCKY LANDSCAPE ; WAVELET ANALYSIS ; N2O EMISSIONS ; NITRIC-OXIDE ; DENITRIFICATION ; SCALE ; FLUX ; PATTERNS
WOS类目Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209581
作者单位1.Chinese Acad Sci, Northeast Inst Geog & Agroecol, 138 Hoping Rd, Harbin 150081, Heilongjiang, Peoples R China;
2.McGill Univ, Dept Bioresource Engn, 21111 Lakeshore Rd, Ste Anne De Bellevue, PQ H9X 2V9, Canada;
3.Univ Saskatchewan, Dept Soil Sci, 51 Campus Dr, Saskatoon, SK S7N 5A8, Canada;
4.Univ Guelph, Sch Environm Sci, 50 Stone Rd East, Guelph, ON N1G 2W1, Canada
推荐引用方式
GB/T 7714
Zou, Wenxiu,Ji, Wenjun,Si, Bing Cheng,et al. Detecting nonlinearity in the spatial series of nitrous oxide emission by delay vector variance[J],2018,317:23-31.
APA Zou, Wenxiu,Ji, Wenjun,Si, Bing Cheng,&Biswas, Asim.(2018).Detecting nonlinearity in the spatial series of nitrous oxide emission by delay vector variance.GEODERMA,317,23-31.
MLA Zou, Wenxiu,et al."Detecting nonlinearity in the spatial series of nitrous oxide emission by delay vector variance".GEODERMA 317(2018):23-31.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Zou, Wenxiu]的文章
[Ji, Wenjun]的文章
[Si, Bing Cheng]的文章
百度学术
百度学术中相似的文章
[Zou, Wenxiu]的文章
[Ji, Wenjun]的文章
[Si, Bing Cheng]的文章
必应学术
必应学术中相似的文章
[Zou, Wenxiu]的文章
[Ji, Wenjun]的文章
[Si, Bing Cheng]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。