Sand mining and increasing Poyang Lake’s discharge ability: A reassessment of causes for lake decline in China

Lai, Xijun; Shankman, David; Huber, Claire; Yésou, H.; Huang, Qun; Jiang, Jiahu

doi:10.1016/j.jhydrol.2014.09.058

Cited by 200 publications

(133 citation statements)

References 23 publications

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“…sand mining, reclaiming farmland from the lake, and channel regulation of the lake region, have aggravated the incline phenomenon of Poyang Lake surface in the last few decades. These anthropogenic activities have increased the volume of Poyang Lake and lowered the elevation of the lake bed, consequently decreasing the water level of the lake, particularly the sand mining [20]. According to the statistics data, annually 4.5 × 10 7 t sand, four times the amount of mean sediment deposition, is mined from the Poyang Lake for economic benefit.…”

Section: Characteristics Of Water Regime In Poyang Lakementioning

confidence: 99%

Effects of Water Regime on Spring Wetland Landscape Evolution in Poyang Lake between 2000 and 2010

You

Fan

et al. 2017

Water

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Abstract:Water regime was one of the most important driving factors in the formation of wetland landscape and the growth and distribution pattern of wetland vegetation. Currently, research on the relationship between wetland landscape and water regime was mostly focused in autumns and winters in Poyang Lake, and lack of research in springs. Based on the nine high-resolution spring remote sensing images during 2000-2010, the classification characteristics of wetland landscape and spatial distribution pattern of vegetation and their succession trends in Poyang Lake were studied through quantitative interpretation technology and multivariate statistical analysis. Combined with water level fluctuations characteristics of the five monitoring hydrological stations (i.e., Hukou, Xingzi, Duzhan, Tangyin and Kangshan) at the Poyang Lake, the inter-annual and intra-annual water level variations of Poyang Lake were analyzed. The study was aimed to investigate the quantitative effects of water regime on the spring wetland landscape and spatial distribution pattern of vegetation and their succession trends in Poyang Lake. The results showed that: (1) the maximum scope of water levels of the five monitoring stations varied from 8.5 m to 13.57 m, and the water level of Poyang lake showed a downward trend, declining at an average rate of 0.16 m per year during 2000-2010; (2) the total area of the 10 types of the landscapes did not change significantly, which was always maintained at about 3026 km 2 and the total area of vegetation coverage showed increasing trend during 2000-2010 in Poyang Lake, with a maximum area in 2008 and a minimum area in 2010; (3) The water level change was consistent with the area of the lake water, and was inconsistent with the areas of the mudflat, vegetation and land-water transition zone. The highest linear fitting degree with water level was the area of the land-water transition zone, followed by the lake water and vegetation. The results were helpful to further explore the eco-hydrology process and its trend at Poyang Lake wetland, a scientific reference for the maintenance of stable ecosystem functions of the seasonal freshwater lake wetland.

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Section: Characteristics Of Water Regime In Poyang Lakementioning

confidence: 99%

Effects of Water Regime on Spring Wetland Landscape Evolution in Poyang Lake between 2000 and 2010

You

Fan

et al. 2017

Water

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“…The mutiple forces by precipitation, inflow, the air temperature and evaporation resulted in a decline in water levels in Lake Superior in North America at the rate of approximately 1.0 cm per year [31]. The water level variation of Poyang Lake in China may be a combination effect by the operation of TGR [64], serious sand mining and waterway regulation [65]; The precipitation in the Huai River basin decreased since the mid-1960s, while the WLM increased significantly. WLM of Hongze Lake has been changed more and more by anthropogenic activities (especially hydraulic engineering) from 1950s [29].…”

Section: Further Evaluation On the Hydrological Variation Linked To Amentioning

confidence: 99%

Analysis of Long-Term Water Level Variation in Dongting Lake, China

Han

Zhang

Huang

et al. 2016

Water

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Abstract:The water level of Dongting Lake has changed because of the combined impact of climatic change and anthropogenic activities. A study of the long-term statistical properties of water level variations at Chenglingji station will help with the management of water resources in Dongting Lake. In this case, 54 years of water level data for Dongting Lake were analyzed with the non-parametric Mann-Kendall trend test, Sen's slope test, and the Pettitt test. The results showed the following: (1) Trends in annual maximum lake water level (WLM), annual mean lake water level (WL), and annual minimum lake water level (WLm) increased from 1961 to 2014; however, the three variables showed different trends from 1981 to 2014; (2) The annual change trends in Dongting Lake between 1961-2014 and 1981-2014 were found to be from approximately 0.90 cm/year to´2.27 cm/year, 1.65 cm/year to´0.79 cm/year, and 4.58 cm/year to 2.56 cm/year for WLM, WL, and WLm, respectively; (3) A greater degree of increase in water level during the dry season (November-April) was found from 2003 to 2014 than from 1981 to 2002, but a smaller degree of increase, even to the point of decreasing, was found during the wet season (May-October); (4) The measured discharge data and numerical modeling results showed the operation of Three Gorge Reservoir (TGR) pushed to influence partly the recent inter-annual variation of water level in Dongting Lake region, especially in the flood and dry seasons. The analysis indicated that the water level of Dongting Lake has changed in the long term with decreasing of range between WLM and WLm, and may decrease the probability of future drought and flood events. These results can provide useful information for the management of Dongting Lake.

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“…A management policy became effective in 1998, which prohibited sand mining in the Yangtze River [57]. Since then, numerous dredging vessels were deployed in Dongting Lake, as well as Poyang Lake [57,58], leading to excessive and often out-of-order mining in EDL and SDL. The sand mining vessels were distributed along the shore of WDL.…”

Section: Factors Affecting the Spatial And Temporal Changes In Tsmmentioning

confidence: 99%

Landsat-Based Long-Term Monitoring of Total Suspended Matter Concentration Pattern Change in the Wet Season for Dongting Lake, China

et al. 2015

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Assessing the impacts of environmental change and anthropogenic activities on the historical and current total suspended matter (TSM) pattern in Dongting Lake, China, is a large challenge. We addressed this challenge by using more than three decades of Landsat data. Based on in situ measurements, we developed an algorithm based on the near-infrared (NIR) band to estimate TSM in Dongting Lake. The algorithm was applied to Landsat images to derive TSM distribution maps from 1978 to 2013 in the wet season, revealing significant inter-annual and spatial variability. The relationship of TSM to water level, precipitation, and wind speed was analyzed, and we found that: (1) sand mining areas usually coincide with regions that have high TSM levels in Dongting Lake; (2) water level and seven-day precipitation were both important to TSM variation, but no significant relationship was found between TSM and wind speed or other meteorological data; (3) the increased level of sand mining in response to rapid economic growth has deeply influenced the TSM pattern since 2000 due to the resuspension of sediment; and (4) TSM variation might OPEN ACCESSRemote Sens. 2015, 7 13976 be associated with policy changes regarding the management of sand mining; it might also be affected by lower water levels caused by the impoundment of the Three Gorges Dam since 2000.

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Sand mining and increasing Poyang Lake’s discharge ability: A reassessment of causes for lake decline in China

Cited by 200 publications

References 23 publications

Effects of Water Regime on Spring Wetland Landscape Evolution in Poyang Lake between 2000 and 2010

Effects of Water Regime on Spring Wetland Landscape Evolution in Poyang Lake between 2000 and 2010

Analysis of Long-Term Water Level Variation in Dongting Lake, China

Landsat-Based Long-Term Monitoring of Total Suspended Matter Concentration Pattern Change in the Wet Season for Dongting Lake, China

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