Sediment denitrification and nitrous oxide production in Chinese plateau lakes with varying watershed land uses

Verfasser / Beitragende:
[Wenzhi Liu, Zhixiu Wang, Quanfa Zhang, Xiaoli Cheng, Jing Lu, Guihua Liu]
Ort, Verlag, Jahr:
2015
Enthalten in:
Biogeochemistry, 123/3(2015-04-01), 379-390
Format:
Artikel (online)
ID: 605517010
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024 7 0 |a 10.1007/s10533-015-0072-9  |2 doi 
035 |a (NATIONALLICENCE)springer-10.1007/s10533-015-0072-9 
245 0 0 |a Sediment denitrification and nitrous oxide production in Chinese plateau lakes with varying watershed land uses  |h [Elektronische Daten]  |c [Wenzhi Liu, Zhixiu Wang, Quanfa Zhang, Xiaoli Cheng, Jing Lu, Guihua Liu] 
520 3 |a Denitrification in lake sediments removes nitrogen and releases N2O to the atmosphere, contributing to global warming. However, the rates and controls of sediment denitrification and N2O production are still poorly understood in lakes. In this study, we measured potential denitrification, unamended denitrification and N2O production rate in sediments which were collected from 68 sites in 20 Chinese plateau lakes of varying watershed land uses. The result showed that potential denitrification rate of human-dominated lakes (37.94±8.91ngNg−1h−1) was significantly higher than that of reference lakes (18.50±3.22ngNg−1h−1). In addition, potential denitrification rate was positively related to the proportion of human land uses in watersheds. At the lake level, unamended denitrification and N2O production rates were significantly related to water chemistry or sediment properties (e.g., conductivity and sediment total nitrogen). Water chemistry and sediment properties together accounted for 0-69% of the variance in denitrification and N2O production rates. Variance partitioning showed that unamended denitrification and N2O production rates in human-dominated lakes were controlled primarily by sediment properties, while in reference lakes were generally controlled by water chemistry. Our findings suggest that Chinese plateau lakes can remove large quantities of nitrogen through sediment denitrification and produce small amounts of N2O. The relative contributions of water chemistry and sediment properties to the lake denitrification and N2O production vary widely. 
540 |a Springer International Publishing Switzerland, 2015 
690 7 |a Eutrophication  |2 nationallicence 
690 7 |a Greenhouse gas  |2 nationallicence 
690 7 |a Nitrogen pollution  |2 nationallicence 
690 7 |a Potential denitrification  |2 nationallicence 
690 7 |a Unamended denitrification  |2 nationallicence 
690 7 |a Watershed landscape  |2 nationallicence 
700 1 |a Liu  |D Wenzhi  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
700 1 |a Wang  |D Zhixiu  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
700 1 |a Zhang  |D Quanfa  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
700 1 |a Cheng  |D Xiaoli  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
700 1 |a Lu  |D Jing  |u Australian Rivers Institute, Griffith University, 4111, Brisbane, Queensland, Australia  |4 aut 
700 1 |a Liu  |D Guihua  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
773 0 |t Biogeochemistry  |d Springer International Publishing  |g 123/3(2015-04-01), 379-390  |x 0168-2563  |q 123:3<379  |1 2015  |2 123  |o 10533 
856 4 0 |u https://doi.org/10.1007/s10533-015-0072-9  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s10533-015-0072-9  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Liu  |D Wenzhi  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Wang  |D Zhixiu  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Zhang  |D Quanfa  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Cheng  |D Xiaoli  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Lu  |D Jing  |u Australian Rivers Institute, Griffith University, 4111, Brisbane, Queensland, Australia  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Liu  |D Guihua  |u Key Laboratory of Aquatic Botany and Watershed Ecology Wuhan Botanical Garden, Chinese Academy of Sciences, 430074, Wuhan, People's Republic of China  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Biogeochemistry  |d Springer International Publishing  |g 123/3(2015-04-01), 379-390  |x 0168-2563  |q 123:3<379  |1 2015  |2 123  |o 10533