Evaluation of water quality and management of Hongze Lake and Gaoyou Lake along the Grand Canal in Eastern China

Li, Shuheng; Guo, Wei; Mitchell, Bruce

doi:10.1007/s10661-010-1590-5

Cited by 28 publications

(15 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Lake Hongze is the fourth largest freshwater lake in China and provide important role in water supply, irrigation, fishery, etc. The water quality of Lake Hongze has attracted more attention due to strong human activities such as the South-to-North Water Transfer Project and dredging activities [30][31][32]. However, studies have shown a clear increase in suspended particulate concentrations in 2012 and first observed sand mining vessels using LANDSAT data and VIIRS data in Lake Hongze [30,33].…”

Section: Introductionmentioning

confidence: 99%

Decline in Transparency of Lake Hongze from Long-Term MODIS Observations: Possible Causes and Potential Significance

Shi

Zhang

et al. 2019

Remote Sensing

View full text Add to dashboard Cite

Transparency is an important indicator of water quality and the underwater light environment and is widely measured in water quality monitoring. Decreasing transparency occurs throughout the world and has become the primary water quality issue for many freshwater and coastal marine ecosystems due to eutrophication and other human activities. Lake Hongze is the fourth largest freshwater lake in China, providing water for surrounding cities and farms but experiencing significant water quality changes. However, there are very few studies about Lake Hongze's transparency due to the lack of long-term monitoring data for the lake. To understand long-term trends, possible causes and potential significance of the transparency in Lake Hongze, an empirical model for estimating transparency (using Secchi disk depth: SDD) based on the moderate resolution image spectroradiometer (MODIS) 645-nm data was validated using an in situ dataset. Model mean absolute percentage and root mean square errors for the validation dataset were 27.7% and RMSE = 0.082 m, respectively, which indicates that the model performs well for SDD estimation in Lake Hongze without any adjustment of model parameters. Subsequently, 1785 cloud-free images were selected for use by the validated model to estimate SDDs of Lake Hongze in 2003-2017. The long-term change of SDD of Lake Hongze showed a decreasing trend from 2007 to 2017, with an average of 0.49 m, ranging from 0.57 m in 2007 to 0.42 m in 2016 (a decrease of 26.3%), which indicates that Lake Hongze experienced increased turbidity in the past 11 years. The loss of aquatic vegetation in the northern bays may be mainly affected by decreases of SDD. Increasing total suspended matter (TSM) concentration resulting from sand mining activities may be responsible for the decreasing trend of SDD.

show abstract

Section: Introductionmentioning

confidence: 99%

Decline in Transparency of Lake Hongze from Long-Term MODIS Observations: Possible Causes and Potential Significance

Shi

Zhang

et al. 2019

Remote Sensing

View full text Add to dashboard Cite

show abstract

“…Hongze Lake is also an important regulating reservoir of the South-to-North Water Diversion Project, which aims to divert water from the Yangtze River to alleviate water shortage in northern China (Li et al 2011a).…”

Section: Introductionmentioning

confidence: 99%

Sustainable farming practices of the Chinese mitten crab (Eriocheir sinensis) around Hongze Lake, lower Yangtze River Basin, China

Wang

Liu

Zhang³

et al. 2015

Ambio

View full text Add to dashboard Cite

Results of a survey of 156 Chinese mitten crab (Eriocheir sinensis) grow-out farms around Hongze Lake (118.48-118.72°E; 33.36-33.38°N) are reported. Area farmed has remained relatively unchanged but production (59 932 t in 2012) increased steadily over the last 7 years, indicative of the viability and sustainability of the farming system that has gradually replaced intensive Chinese major carp polyculture around Hongze Lake. Results showed that production range was 135-2400 kg ha -1 cycle -1 (mean 1144 ± 34). Crab yields correlated linearly to stocking density and conformed to a normal distribution curve, with 66.7 % of farms yielding 900 kg ha -1 cycle -1 or more. Yield was negatively correlated to pond size and capture size (p\0.01), and farms with macrophyte coverage rate lower than 30 % of water surface were significantly (p\0.05) lower than those exceeding 30 %.

show abstract

“…The Huai River is the main source of water for Hongze Lake, accounting for more than 70% of the lake's total catchment inputs [18]. Hongze Lake's major outlet has two important functions: it serves as the water channel to the San River, which flows into the Yangtze River, while also serving as the water channel to the Yellow Sea and the Main Irrigation Channel for North Jiangsu.…”

Section: Study Areamentioning

confidence: 99%

“…As the intersection point of the main stream and branches, the Eastern Hongze Lake is both a sink for pollutants from the upper reaches of the Huai River, and a source of pollutants for the Huai River's lower reaches and SNWDP-ER [18]. Several prior studies have found that Hongze Lake has high nutrient pollution; this is mainly owing to nitrogen and phosphorus exceeding standards, causing widespread eutrophication in the lake [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Statistical Assessment of Water Quality Issues in Hongze Lake, China, Related to the Operation of a Water Diversion Project

Dai

et al. 2018

Sustainability

View full text Add to dashboard Cite

Abstract:The Hongze Lake serves as the first important transfer and storage path along the East Route of the South-to-North Water Diversion Project (SNWDP-ER). After the Project began operating in 2013, eutrophication in the lake has created increasing public concern regarding the direct effect on water quality from the project. In this paper, we used multivariate statistical methods to examine the variances between water quality variables at four site groups (inlets and outlets in the study area) and during three seasons (wet, normal, and dry seasons) in Eastern Hongze Lake. We also used redundancy analysis (RDA) to analyze environmental factors' impact on water quality. We found that (1) the concentrations of nitrogen and phosphorus were exceeding the standard values; (2) No significant spatial heterogeneity regarding nitrogen and phosphorus among the inlet/outlet of Eastern Hongze Lake existed in normal and wet seasons, and there was no evidence demonstrating that SNWDP-ER could improve eutrophication or even contribute to eutrophication in the dry season; (3) Environmental factors (land use, water diversion, and population) have limited influences on water quality, which was possibly caused by the overly-high river input and artificial input of nitrogen and phosphorus. Thus, it is critical to reinforce the control of pollution sources and enhance the ecological restoration.

show abstract

Evaluation of water quality and management of Hongze Lake and Gaoyou Lake along the Grand Canal in Eastern China

Cited by 28 publications

References 14 publications

Decline in Transparency of Lake Hongze from Long-Term MODIS Observations: Possible Causes and Potential Significance

Decline in Transparency of Lake Hongze from Long-Term MODIS Observations: Possible Causes and Potential Significance

Sustainable farming practices of the Chinese mitten crab (Eriocheir sinensis) around Hongze Lake, lower Yangtze River Basin, China

Statistical Assessment of Water Quality Issues in Hongze Lake, China, Related to the Operation of a Water Diversion Project

Contact Info

Product

Resources

About