Problems and Countermeasures in Sihu Lacustrine Wetland of Hubei

2013 ◽  
Author(s):  
Ji-Yu Wang ◽  
Ying-Bing Tian
Keyword(s):  
Lacustrine Wetland

Thin ferrihydrite sediment capping sequestrates phosphorus experiencing redox conditions in a shallow temperate lacustrine wetland

Chemosphere ◽  
2017 ◽  
Vol 185 ◽  
pp. 673-680 ◽  
Author(s):  
Yuanchun Zou ◽  
Michael R. Grace ◽  
Keryn L. Roberts ◽  
Xiaofei Yu
Keyword(s):  
Redox Conditions ◽  
Sediment Capping ◽  
Lacustrine Wetland

scholarly journals Effects of Aeration, Vegetation, and Iron Input on Total P Removal in a Lacustrine Wetland Receiving Agricultural Drainage

Water ◽  
2018 ◽  
Vol 10 (1) ◽  
pp. 61 ◽  
Author(s):  
Yuanchun Zou ◽  
Linlin Zhang ◽  
Luying Wang ◽  
Sijian Zhang ◽  
Xiaofei Yu
Keyword(s):  
Agricultural Drainage ◽  
Total P ◽  
Lacustrine Wetland ◽  
P Removal

scholarly journals Lacustrine wetland in an agricultural catchment: nitrogen removal and related biogeochemical processes

2008 ◽  
Vol 12 (2) ◽  
pp. 539-550 ◽  
Author(s):  
R. Balestrini ◽  
C. Arese ◽  
C. Delconte
Keyword(s):  
Nitrate Removal ◽  
Biogeochemical Processes ◽  
N Transformations ◽  
Factors Affecting ◽  
Catchment Areas ◽  
Crop Field ◽  
Denitrification Activity ◽  
Extreme Variability ◽  
Lacustrine Wetland

Abstract. The role of specific catchment areas, such as the soil-river or lake interfaces, in removing or buffering the flux of N from terrestrial to aquatic ecosystems is globally recognized but the extreme variability of microbiological and hydrological processes make it difficult to predict the extent to which different wetlands function as buffer systems. In this paper we evaluate the degree to which biogeochemical processes in a lacustrine wetland are responsible for the nitrate removal from ground waters feeding Candia Lake (Northern Italy). A transect of 18 piezometers was installed perpendicular to the shoreline, in a sub-unit formed by 80 m of poplar plantation, close to a crop field and 30 m of reed swamp. The chemical analysis revealed a drastic NO3–-N ground water depletion from the crop field to the lake, with concentrations decreasing from 15–18 mg N/l to the detection limit within the reeds. Patterns of Cl–, SO42–, O2, NO2–-N, HCO3– and DOC suggest that the metabolic activity of bacterial communities, based on the differential use of electron donors and acceptors in redox reactions is the key function of this system. The significant inverse relationship found between NO3–-N and HCO3– is a valuable indicator of the denitrification activity. The pluviometric regime, the temperature, the organic carbon availability and the hydrogeomorphic properties are the main environmental factors affecting the N transformations in the studied lacustrine ecosystem.

scholarly journals Lacustrine wetland in an agricultural catchment: nitrogen removal and related biogeochemical processes

2007 ◽  
Vol 4 (5) ◽  
pp. 3501-3534
Author(s):  
R. Balestrini ◽  
C. Arese ◽  
C. Delconte
Keyword(s):  
Nitrate Removal ◽  
Biogeochemical Processes ◽  
N Transformations ◽  
Factors Affecting ◽  
Catchment Areas ◽  
Crop Field ◽  
Denitrification Activity ◽  
Extreme Variability ◽  
Lacustrine Wetland

Abstract. The role of specific catchment areas, such as the soil-river or lake interfaces, in removing or buffering the flux of N from terrestrial to aquatic ecosystems is globally recognized but the extreme variability of microbiological and hydrological processes make it difficult to predict the extent to which different wetlands function as buffer systems. In this paper we evaluate the degree to which biogeochemical processes in a lacustrine wetland are responsible for the nitrate removal from ground waters feeding Candia Lake (Northern Italy). A transect of 18 piezometers was installed perpendicular to the shoreline, in a sub-unit formed by 80 m of poplar plantation, close to a crop field and 30 m of reed swamp. The chemical analysis revealed a drastic NO3-N ground water depletion from the crop field to the lake, with concentrations decreasing from 15–18 mg N/l to the detection limit within the reeds. Patterns of Cl, SO4, O2, NO2-N, HCO3 and DOC suggest that the metabolic activity of bacterial communities, based on the differential use of electron donors and acceptors in redox reactions is the key function of this system. The significant inverse relationship found between NO3-N and HCO3 is a valuable indicator of the denitrification activity. The pluviometric regime, the temperature, the organic carbon availability and the hydrogeomorphic properties are the main environmental factors affecting the N transformations in the studied lacustrine ecosystem.

scholarly journals Ecological system health evaluation of lacustrine wetland in Taihu Basin

2019 ◽  
Vol 31 (5) ◽  
pp. 1279-1288
Author(s):  
XU Hongling ◽  
◽  
PAN Jizheng ◽  
XU Ligang ◽  
LU Xuejun ◽  
...  
Keyword(s):  
Ecological System ◽  
Health Evaluation ◽  
Taihu Basin ◽  
Lacustrine Wetland

Quantitative assessment of drought in a lacustrine wetland based on a water balance model

2013 ◽  
Vol 70 (1) ◽  
pp. 693-703 ◽  
Author(s):  
Yong Yuan ◽  
Denghua Yan ◽  
Hao Wang ◽  
Qing Wang ◽  
Baisha Weng
Keyword(s):  
Water Balance ◽  
Quantitative Assessment ◽  
Water Balance Model ◽  
Balance Model ◽  
Lacustrine Wetland
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