Wetland restoration and its purification efficiency in estuary of Dajie River, Lake Xingyun, Yunnan Province

Yin-xi, LI; HUYaohui,; Wang, Yunhua; Yunkuan, QI; Tang, Fang; Liu, Jun; Lin, Yang

doi:10.18307/2007.0309

Cited by 4 publications

(4 citation statements)

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“…At the end of autumn, the precipitation in the study area decreases rapidly, and the farmland is no longer drained; at the same time, the temperature decreases, the wetland plants wither, and the nitrogen removal ability of the wetland water decreases. Therefore, the difference in the nitrogen content between summer and autumn can best reflect the nitrogen removal capacity of the wetlands (Li et al, 2007; Nilsson et al, 2023). The variation range of the nitrogen content in the other seasons provides a relatively poor reflection of the nitrogen removal capacity of the wetland water.…”

Section: Methodsmentioning

confidence: 99%

“…The variation range of the nitrogen content in the other seasons provides a relatively poor reflection of the nitrogen removal capacity of the wetland water. There are also some studies (Li et al, 2007; Nilsson et al, 2023; Yang et al, 2021) that use similar methods to study nitrogen removal capacity. Therefore, although there was only one set of sampling data for summer and autumn, which could have caused bias, our research results still have some credibility.…”

Section: Methodsmentioning

confidence: 99%

“…There are also some studies (Li et al, 2007;Nilsson et al, 2023;Yang et al, 2021) that use similar methods to study nitrogen removal capacity. Therefore, although there was only one set of sampling data for summer and autumn, which could have caused bias, our research results still have some credibility.…”

Section: Water Sampling and Determinationmentioning

confidence: 99%

See 2 more Smart Citations

Spatial difference on nitrogen removal in the water based on different resolutions for Sanhuanpao wetland, Northeast China

Wang,

Ma,

Jiang

et al. 2024

Water Environment Research

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The research on the deviations caused by different resolutions is relevant to the study of spatial scale effects. In 2018, spatial interpolations were performed using the removal ratios of the TN, NH4‐N, and NO3‐N of the layers of different resolutions, respectively. Based on the mean and the standard deviation, the area, shape, and position were obtained for four levels related to the removal ratios of the three nitrogen forms. The linear and 6th function fitting methods were used to reveal the differences in nitrogen removal in wetland water at different spatial resolutions. The results showed that a resolution of 25 times the original was the key scale of the spatial effects. Due to the fact that 52 of the 72 functions did not reach a significant level (P < 0.05), the spatial scale effect of the nitrogen removal was mainly characterized by disorderly fluctuations. The results have a certain extrapolation value for the analysis of spatial scale effects.Practitioner Points The resolution difference was not sufficient to change the spatial pattern of the geographic phenomena. The resolution of 25 times the original was the important scale for determining spatial effects. When studying the spatial scale effects caused by differences in resolution, it was necessary to comprehensively consider various resolutions.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Spatial difference on nitrogen removal in the water based on different resolutions for Sanhuanpao wetland, Northeast China

Wang,

Ma,

Jiang

et al. 2024

Water Environment Research

View full text Add to dashboard Cite

show abstract

“…These methods have not only been applied in the ecological restoration of large lakes and wetlands, including Taihu Lake, Chaohu Lake, Dianchi Lake and West Lake, but are also used to control and maintain the water quality of large artificial lakes, streams and pools in urban open spaces [6]. The effect of ecological redevelopment on water ecosystems is mainly evident in eutrophic lakes and constructed wetlands [7,8]. In aquaculture ponds, terrain modification has been carried out through the dismantlement of pond dikes, Water 2023, 15, 2881 2 of 15 drainage treatment, sediment replacement, and sun exposure at the bottom of Yilong Lake in Yunnan [5].…”

Section: Introductionmentioning

confidence: 99%

Eco-Engineering Technologies and Achievements of Projects for Reconstructing Landscape Water from Aquaculture Ponds in Shanghai

Zhang

Shang

2023

Water

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The post-evaluation of ecological redevelopment is a good way of describing its achievements. In this paper, eco-engineering techniques, including hydrodynamic circulation reconstruction, water purification treatment, and aquatic ecosystem restoration, along with plant harvesting management, have been applied to reconstruct landscape water from aquaculture ponds. Both sediments and water quality were sampled and tested for basic physicochemical parameters and heavy metals. The ecological redevelopment of landscape water reconstructed from aquaculture ponds was evaluated using the single and Nemero comprehensive pollution index methods. The results demonstrate that nutrients, including organic matter and organic nitrogen and their ratio to sediments, were confirmed to be in a state of moderate pollution, while the ecological risk of heavy metal pollution was relatively low. Although the concentrations of total nitrogen and total phosphorus were significantly higher than those of other indexes, ammonia nitrogen, total nitrogen and total phosphorus, all presented obvious downward trends over time, and a majority of the water samples exhibited mild-to-moderate pollution levels. In general, this study provides a set of reference values for redeveloping water ecosystems from aquaculture ponds using eco-engineering technologies.

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Biological responses to recent eutrophication and hydrologic changes in Xingyun Lake, southwest China

Liu

Chen

et al. 2017

J Paleolimnol

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Wetland restoration and its purification efficiency in estuary of Dajie River, Lake Xingyun, Yunnan Province

Cited by 4 publications

References 0 publications

Spatial difference on nitrogen removal in the water based on different resolutions for Sanhuanpao wetland, Northeast China

Spatial difference on nitrogen removal in the water based on different resolutions for Sanhuanpao wetland, Northeast China

Eco-Engineering Technologies and Achievements of Projects for Reconstructing Landscape Water from Aquaculture Ponds in Shanghai

Biological responses to recent eutrophication and hydrologic changes in Xingyun Lake, southwest China

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