IGSNRR OpenIR  > 历年回溯文献
Characterizing ecosystem water-use efficiency of croplands with eddy covariance measurements and MODIS products
Tang X. G.; Ding, Z.; Li, H. P.; Li, X. Y.; Luo, J. H.; Xie, J.; Chen, D. Q.
Source PublicationEcological Engineering
2015
Volume85
Pages212-217
KeywordWater use efficiency MODIS Management practices Carbon balance soil carbon sequestration no-till terrestrial ecosystems cropping systems ameriflux data climate-change united-states management plant co2
AbstractHow to quantify the variability in ecosystem water use efficiency (WUE) of croplands is of vital importance. Especially in the context of changing hydrologic environment, much attention need to be paid on how to use limited water to improve crop yield. However, the biophysical performances of environmental/biological controls, crop types, and effects of diverse farming practices on WUE remain unclear. Therefore, this study aims to address these questions through tower-based measurements from eddy covariance and satellite-based estimates from MODIS GPP and ET products at the two annual soybean/corn rotation fields. The results exhibited that temperature and solar radiation are the most important meteorological factors. MODIS WUE estimates captured the broad trend of 8-day tower-based observations. However, ecosystem WUE was overpredicted at the seedling stage and after harvest, and was severely underestimated at the peak periods of maize, which was mainly ascribed to the uncertainties in MODIS GPP. Finally, we evaluated the effects of two farming practices (conventional vs alternative) on WUE and carbon sequence (NEE). On annual time scale, WUE of both soybean and maize are improved obviously under the alternative management whereas contrasting effects are observed on NEE. But the overall carbon balance for both treatments is nearly identical over 2-year rotation. (C) 2015 Elsevier B.V. All rights reserved.
Indexed BySCI
Language英语
ISSN0925-8574
DOI10.1016/j.ecoleng.2015.09.078
Citation statistics
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/43570
Collection历年回溯文献
Recommended Citation
GB/T 7714
Tang X. G.,Ding, Z.,Li, H. P.,et al. Characterizing ecosystem water-use efficiency of croplands with eddy covariance measurements and MODIS products. 2015.
Files in This Item: Download All
File Name/Size DocType Version Access License
Tang-2015-Characteri(1657KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tang X. G.]'s Articles
[Ding, Z.]'s Articles
[Li, H. P.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang X. G.]'s Articles
[Ding, Z.]'s Articles
[Li, H. P.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang X. G.]'s Articles
[Ding, Z.]'s Articles
[Li, H. P.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Tang-2015-Characterizing ecosy.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.