ArticlePLoS neglected tropical diseases2017
Impact of the Three Gorges project on ecological environment changes and snail distribution in Dongting Lake area.
Article in PLoS neglected tropical diseases, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.
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10 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Three Gorges Dam: the changing trend of snail density in the Yangtze River basin between 1990 and 2019.Infectious diseases of poverty · 2023Pooled it
- A meta-analysis of infection rates of Schistosoma japonicum in sentinel mice associated with infectious waters in mainland China over last 40 years.PLoS neglected tropical diseases · 2019Pooled it
- Field Testing Integrated Interventions for Schistosomiasis Elimination in the People's Republic of China: Outcomes of a Multifactorial Cluster-Randomized Controlled Trial.Frontiers in immunology · 2019Trial
- Decoding the impact of environmental shifts on snail density dynamics in the Yangtze River basin: a 26-year study.Parasites & vectors · 2025Article
- Interactive and lag effects of environmental factors on the density of schistosome-transmitting Oncomelania hupensis: A twelve-year monthly repeated survey.Parasitology research · 2024Article
- Three Gorges Dam: Potential differential drivers and trend in the spatio-temporal evolution of the change in snail density based on a Bayesian spatial-temporal model and 5-year longitudinal study.Parasites & vectors · 2023Article
- Temporal modelling of Lymnaea natalensis (Krauss, 1848) in tropical aquatic habitats.The Onderstepoort journal of veterinary research · 2023Article
- Current Status of Schistosomiasis Control and Prospects for Elimination in the Dongting Lake Region of the People's Republic of China.Frontiers in immunology · 2020Review
- Change patterns of oncomelanid snail burden in areas within the Yangtze River drainage after the three gorges dam operated.Infectious diseases of poverty · 2019Article
- Distribution pattern of the snail intermediate host of schistosomiasis japonica in the Poyang Lake region of China.Infectious diseases of poverty · 2019Article
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7 authors.
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Abstract
backgroundThe Three Gorges Dam (TGD) is a remarkable, far-reaching project in China. This study was conducted to assess the impact of TGD on changes in the ecological environment, snail distribution and schistosomiasis transmission in Dongting Lake area.
methodsHydrological data were collected from 12 monitoring sites in Hunan section of Yangtze River before and after TGD was established. Data on snail distribution and human schistosomiasis infection were also collected. Correlation analyses were performed to detect the significance of snail distribution to changes in ecological environmental factors and human schistosomiasis infection.
findingsA series of ecological environmental factors have changed in Dongting Lake area following the operation of TGD. Volume of annual runoff discharged into Dongting Lake declined by 20.85%. Annual sediment volume discharged into the lake and the mean lake sedimentation rate decreased by 73.9% and 32.2%, respectively. From 2003 to 2015, occurrence rate of frames with living snails and mean density of living snails decreased overall by 82.43% and 94.35%, respectively, with annual decrements being 13.49% and 21.29%. Moreover, human infection rate of schistosomiasis had decreased from 3.38% in 2003 to 0.44% in 2015, with a reduction of 86.98%. Correlation analyses showed that mean density of living snails was significantly associated with water level (r = 0.588, p<0.001), as well as the mean elevation range of the bottomland (r = 0.374, p = 0.025) and infection rate of schistosomiasis (r = 0.865, p<0.001).
conclusionEcological environmental changes caused by the TGD were associated with distribution of snails, and might further affect the transmission and prevalence of schistosomiasis. Risk of schistosomiasis transmission still exists in Dongting Lake area and long-term monitoring is required.
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