ZhuWuWuEtAl2015
Référence
Zhu, D., Wu, Y., Wu, N., Chen, H., He, Y., Zhang, Y., Peng, C., Zhu, Q. (2015) Nitrous oxide emission from infralittoral zone and pelagic zone in a shallow lake: Implications for whole lake flux estimation and lake restoration. Ecological Engineering, 82:368-375. (Scopus 
)
Résumé
We measured nitrous oxide (N<inf>2</inf>O) emission from the infralittoral zone and pelagic zone in a shallow lake on the Tibetan Plateau during the growing season of 2009, prior to the lake restoration project aiming to raise the lake water by 0.5-1m. Mean flux rates of N<inf>2</inf>O were 0.054±0.094mg N<inf>2</inf>Om-2h-1 and 0.009±0.072mg N<inf>2</inf>Om-2h-1 from infralittoral zone and pelagic zone respectively. Submerged plant biomass index (SPBI) (R=0.43, P<0.01, n=16), nitrate content in surface sediment (R=0.22, P<0.05, n=16) and surface sediment temperature (R=0.79, P=0.000, n=16) were found to significantly correlated to the spatial pattern of N<inf>2</inf>O flux. Nitrates loading gradient across (sub) zones along with the enhancing effect of plant on nitrate removal were thought to be responsible for this spatial pattern of N<inf>2</inf>O flux, while temperature act as a regulator on denitrification. Infralittoral zone had the greatest relative contribution (62.2%) of N<inf>2</inf>O emission to the whole lake budget among various (sub) zones, indicating infralittoral zone a vital component of N<inf>2</inf>O emission from shallow lakes. As the consequence of the lake restoration project, the response of N<inf>2</inf>O flux to the raised water depth might vary from different (sub) zones, therefore further study should be conducted so as to have a better understanding on the effect of restoration project on the overall N<inf>2</inf>O flux from the lake. © 2015 Elsevier B.V.
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@ARTICLE { ZhuWuWuEtAl2015,
AUTHOR = { Zhu, D. and Wu, Y. and Wu, N. and Chen, H. and He, Y. and Zhang, Y. and Peng, C. and Zhu, Q. },
TITLE = { Nitrous oxide emission from infralittoral zone and pelagic zone in a shallow lake: Implications for whole lake flux estimation and lake restoration },
JOURNAL = { Ecological Engineering },
YEAR = { 2015 },
VOLUME = { 82 },
PAGES = { 368-375 },
NOTE = { cited By 0 },
ABSTRACT = { We measured nitrous oxide (N<inf>2</inf>O) emission from the infralittoral zone and pelagic zone in a shallow lake on the Tibetan Plateau during the growing season of 2009, prior to the lake restoration project aiming to raise the lake water by 0.5-1m. Mean flux rates of N<inf>2</inf>O were 0.054±0.094mg N<inf>2</inf>Om-2h-1 and 0.009±0.072mg N<inf>2</inf>Om-2h-1 from infralittoral zone and pelagic zone respectively. Submerged plant biomass index (SPBI) (R=0.43, P<0.01, n=16), nitrate content in surface sediment (R=0.22, P<0.05, n=16) and surface sediment temperature (R=0.79, P=0.000, n=16) were found to significantly correlated to the spatial pattern of N<inf>2</inf>O flux. Nitrates loading gradient across (sub) zones along with the enhancing effect of plant on nitrate removal were thought to be responsible for this spatial pattern of N<inf>2</inf>O flux, while temperature act as a regulator on denitrification. Infralittoral zone had the greatest relative contribution (62.2%) of N<inf>2</inf>O emission to the whole lake budget among various (sub) zones, indicating infralittoral zone a vital component of N<inf>2</inf>O emission from shallow lakes. As the consequence of the lake restoration project, the response of N<inf>2</inf>O flux to the raised water depth might vary from different (sub) zones, therefore further study should be conducted so as to have a better understanding on the effect of restoration project on the overall N<inf>2</inf>O flux from the lake. © 2015 Elsevier B.V. },
AUTHOR_KEYWORDS = { Infralittoral zone; N<inf>2</inf>O emission; Pelagic zone; Shallow lake; Submerged plant },
DOCUMENT_TYPE = { Article },
DOI = { 10.1016/j.ecoleng.2015.05.032 },
KEYWORDS = { Budget control; Nitrates; Nitrogen oxides; Restoration; Surficial sediments, Nitrate contents; Nitrous oxide emissions; Pelagic zones; Relative contribution; Restoration project; Shallow lakes; Submerged plants; Surface sediments, Lakes, lacustrine deposit; lake ecosystem; nitrogen cycle; nitrous oxide; pelagic ecosystem; shallow water; submerged vegetation; water depth, China; Qinghai-Xizang Plateau },
SOURCE = { Scopus },
URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84930940220&partnerID=40&md5=f13435dd0da4df3e2e0ca2be88f20854 },
}
