Science, technology and policy for Water Pollution Control at the Watershed Scale: Current issues and future challenges

Ghadouani, Anas; Coggins, Liah X.

doi:10.1016/j.pce.2011.05.011

Cited by 42 publications

(22 citation statements)

References 44 publications

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“…Since China adopted the well-known “open-door” policy and economic reform, the near shore area of Lake Dianchi has experienced rapid industrialization and urbanization, which has resulted in regional ecosystem and environmental degradation, a loss of biodiversity, extreme deterioration of the water quality of Lake Dianchi, and other negative impacts [14,15,16,17]. Physical, chemical, biological, and systematic engineering methods and policies have been implemented to manage the environmental deterioration of the Lake Dianchi watershed [18,19,20,21]. However, the deteriorated status of the water quality and the environment have not been changed significantly, and the watershed continues to face multiple ecological crises [22,23,24].…”

Section: Introductionmentioning

confidence: 99%

Examining Land-Use/Land-Cover Change in the Lake Dianchi Watershed of the Yunnan-Guizhou Plateau of Southwest China with Remote Sensing and GIS Techniques: 1974–2008

Zhao

Zhang

et al. 2012

IJERPH

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Monitoring land-use/land-cover change (LULCC) and exploring its mechanisms are important processes in the environmental management of a lake watershed. The purpose of this study was to examine the spatiotemporal pattern of LULCC by using multi landscape metrics in the Lake Dianchi watershed, which is located in the Yunnan-Guizhou Plateau of Southwest China. Landsat images from the years 1974, 1988, 1998, and 2008 were analyzed using geographical information system (GIS) techniques. The results reveal that land-use/land-cover has changed greatly in the watershed since 1974. This change in land use structure was embodied in the rapid increase of developed areas with a relative change rate of up to 324.4%. The increase in developed areas mainly occurred in agricultural land, especially near the shores of Lake Dianchi. The spatial pattern and structure of the change was influenced by the urban sprawl of the city of Kunming. The urban sprawl took on the typical expansion mode of cyclic structures and a jigsaw pattern and expanded to the shore of Lake Dianchi. Agricultural land changed little with respect to the structure but changed greatly in the spatial pattern. The landscape in the watershed showed a trend of fragmentation with a complex boundary. The dynamics of land-use/land-cover in the watershed correlate with land-use policies and economic development in China.

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Section: Introductionmentioning

confidence: 99%

Examining Land-Use/Land-Cover Change in the Lake Dianchi Watershed of the Yunnan-Guizhou Plateau of Southwest China with Remote Sensing and GIS Techniques: 1974–2008

Zhao

Zhang

et al. 2012

IJERPH

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“…Furthermore, the potential for release of effluent or recycled (reclaimed) water containing both cyanobacterial biomass, as suspended solids, and cyanotoxins, represents a significant risk to both humans and the environment. Releasing water that contains a high concentration of cyanobacterial biomass might adversely affect natural ecosystems, while contact with cyanobacteria cells can also lead to short-lived, irritative symptoms caused by unknown cyanobacterial substances (Ghadouani & Coggins, 2011;Huisman et al, 2018;Reichwaldt & Ghadouani, 2012;Reichwaldt, Stone, Barrington, Sinang, & Ghadouani, 2016;WHO, 2003). Most importantly, releasing water that contains cyanotoxins can pose a severe hazard to the environment and human health.…”

Section: Pond Ecology and Cyanobacterial Bloomsmentioning

confidence: 99%

The small, the big, and the beautiful: Emerging challenges and opportunities for waste stabilization ponds in Australia

2019

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Waste stabilization ponds (WSPs) are used extensively for the treatment of wastewater in Australia, mostly in regional and remote areas. Wastewater treatment plants (WWTPs) using pond technologies are also distributed over the full geographical extent of Australia, encompassing many climatic zones. Predominantly used to service small to medium‐sized communities, WSPs are also used to service large metropolitan Australian populations, up to 2.5 million people. When well‐maintained, WSPs are a sustainable and resilient treatment option, and treatment is achieved at significantly lower cost when compared with conventional WWTPs. Increasing population, changing regulations, and climate variability are placing increasing pressure on Australian WSP systems. Sludge accumulation over time presents a significant challenge to pond maintenance, along with increasing occurrence of toxic cyanobacterial bloom events. These challenges are only enhanced by the wide geographical distribution and by increasing operational and maintenance costs. Increased demand for recycled water is placing further pressure on Australian WSP systems, as higher value treated water is expected from WSP infrastructure that is often overloaded or under‐designed. This increased demand for high‐quality treatment presents an opportunity for operators and researchers to develop a better understanding of the coupling between hydraulics and microbial ecology of these systems. With more stringent guidelines for greenhouse gas emissions (GHGs), a better understanding of biophysicochemical processes in WSPs will lead to better estimates of GHG fluxes and variability. This information will become critical for the future planning, maintenance and operation of WSPs, and will result in a better understanding of WSP systems overall. This article is categorized under: Engineering Water > Water, Health, and Sanitation Engineering Water > Sustainable Engineering of Water

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“…In particular, eutrophication can lead to an outbreak of cyanobacteria blooms [3], where cyanobacteria Microcystis aeruginosa is one of the dominant species. Toxic M. aeruginosa is one of the most serious symptoms, which could cause severe health issues and increase financial pressure [4,5]. The excessive growth of toxic M. aeruginosa greatly deteriorate the water quality, damaging lakes' natural functions, and even threatening the drinking water resources [6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effects of Rainfall in Kunming on the Growth and Alkaline Phosphatase Activity of the Cyanobacterium Microcystis aeruginosa

Zhang¹,

Wang²,

Ma³

et al. 2017

J Environ Anal Toxicol

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Science, technology and policy for Water Pollution Control at the Watershed Scale: Current issues and future challenges

Cited by 42 publications

References 44 publications

Examining Land-Use/Land-Cover Change in the Lake Dianchi Watershed of the Yunnan-Guizhou Plateau of Southwest China with Remote Sensing and GIS Techniques: 1974–2008

Examining Land-Use/Land-Cover Change in the Lake Dianchi Watershed of the Yunnan-Guizhou Plateau of Southwest China with Remote Sensing and GIS Techniques: 1974–2008

The small, the big, and the beautiful: Emerging challenges and opportunities for waste stabilization ponds in Australia

Effects of Rainfall in Kunming on the Growth and Alkaline Phosphatase Activity of the Cyanobacterium Microcystis aeruginosa

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