An investigation of enhanced recessions in Poyang Lake: Comparison of Yangtze River and local catchment impacts

Zhang, Qi; Ye, Xuchun; Werner, Adrian D.; Li, Yunliang; Yao, Junqiang; Li, Xianghu; Xu, Chong‐Yu

doi:10.1016/j.jhydrol.2014.05.051

Cited by 289 publications

(209 citation statements)

References 31 publications

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“…Poyang Lake has naturally high seasonal variability in lake volume and area, with the outflow from Poyang Lake being controlled by the interaction with the Yangtze River (Liu et al 2013). The reduced streamflow in the upper Yangtze River caused by the impoundment of TGD in 2003 has profoundly changed the hydrology of the lake (Lai et al 2014); outflow from Poyang Lake to the Yangtze has increased and resulted in significant changes to Poyang Lake such as an earlier start to the dry-season Lai et al 2014;Dia et al 2015) and reduction in lake volume and area (Liu et al 2013;Zhang et al 2014Zhang et al , 2015. Although changes in climate, such as increasing temperature and evapotranspiration, have contributed to the decrease in lake volume and area Liu et al 2013), the modifications caused by the TGD have had a much greater impact on the lake's seasonal dryness .…”

Section: Remediation and Managementmentioning

confidence: 99%

Integrated watershed management: evolution, development and emerging trends

et al. 2016

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Watershed management is an ever-evolving practice involving the management of land, water, biota, and other resources in a defined area for ecological, social, and economic purposes. In this paper, we explore the following questions: How has watershed management evolved? What new tools are available and how can they be integrated into sustainable watershed management? To address these questions, we discuss the process of developing integrated watershed management strategies for sustainable management through the incorporation of adaptive management techniques and traditional ecological knowledge. We address the numerous benefits from integration across disciplines and jurisdictional boundaries, as well as the incorporation of technological advancements, such as remote sensing, GIS, big data, and multi-level social-ecological systems analysis, into watershed management strategies. We use three case studies from China, Europe, and Canada to review the success and failure of integrated watershed management in addressing different ecological, social, and economic dilemmas in geographically diverse locations. Although progress has been made in watershed management strategies, there are still numerous issues impeding successful management outcomes; many of which can be remedied through holistic management approaches, incorporation of cutting-edge science and technology, and cross-jurisdictional coordination. We conclude by highlighting that future watershed management will need to account for climate change impacts by employing technological advancements and holistic, cross-disciplinary approaches to ensure watersheds continue to serve their ecological, social, and economic functions. We present three case studies in this paper as a valuable resource for scientists, resource managers, government agencies, and other stakeholders aiming to improve integrated watershed management strategies and more efficiently and successfully achieve ecological and socio-economic management objectives.

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Section: Remediation and Managementmentioning

confidence: 99%

Integrated watershed management: evolution, development and emerging trends

et al. 2016

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“…Liu et al (2013) revealed an abrupt decrease in the lake size in 2006, mainly in October and November. Zhang et al (2014) demonstrated that the lake stage fell to its lowest level during the 2000s compared to previous decades, in particular in the autumn recession periods. Since Poyang Lake receives inflows from its surrounding basin and discharges into the Yangtze River via a narrow outlet at the Hukou (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Poyang Lake is China's largest freshwater lake, which has been undergoing hydrological alterations in recent decades (Jiao, 2009;Finlayson et al, 2010;Hervé et al, 2011;Liu et al, 2013;Zhang et al, 2014). The lake is located at the south bank of the Yangtze River, which is a humid monsoon climatic region.…”

Section: Introductionmentioning

confidence: 99%

“…Although the region historically experiences significant floods (Shankman and Liang, 2003;Shankman et al, 2006), severe lake droughts have occurred frequently in the past decade, resulting in tremendous hydrological, biological, ecological and economic consequences Environment News Service, 2012;Wu and Liu, 2014). Because the lake is the primary part of the well-known Poyang Lake wetland and the lake region serves as an important food base for China, the frequently occurring lake droughts have also received increasing international attention (Jiao, 2009;Finlayson et al, 2010;Liu et al, 2011;Environment News Service, 2012;The Ramsar Convention, 2012;Zhang et al, 2012Zhang et al, , 2014.…”

Section: Introductionmentioning

confidence: 99%

“…A number of studies have documented this decline in Poyang Lake and its influencing factors (Guo et al, 2012;Zhang et al, 2012;Liu et al, 2013;Lai et al, 2014a;Zhang et al, 2014). Feng et al (2012) used satellite images with a 250 m spatial resolution and reported that the lake size had a decreasing trend between 2000 and 2010.…”

Section: Introductionmentioning

confidence: 99%

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Hydroclimatological influences on recently increased droughts in China's largest freshwater lake

Liu

2016

Hydrol. Earth Syst. Sci.

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Abstract. Lake droughts are the consequence of climatic, hydrologic and anthropogenic influences. Quantification of droughts and estimation of the contributions from the individual factors are essential for understanding drought features and their causation structure. This is also important for policymakers to make effective adaption decisions, especially under changing climate. This study examines Poyang Lake, China's largest freshwater lake, which has been undergoing drastic hydrological alternation in the past decade. Standardized lake stage is used to identify and quantify the lake droughts, and hydroclimatic contributions are determined with a water budget analysis, in which absolute deficiency is defined in reference to normal hydrologic conditions. Our analyses demonstrate that in the past decade the lake droughts worsened in terms of duration, frequency, intensity and severity. Hydroclimatic contributions to each individual drought varied between droughts, and the overall contribution to the lake droughts in the past decade came from decreased inflow, increased outflow, and reduced precipitation and increased evapotranspiration in the lake region. The decreased inflow resulted mainly from reduced precipitation and less from increased evapotranspiration over the Poyang Lake basin. The increased outflow was attributable to the weakened blocking effects of the Yangtze River, which the Three Gorges Dam (TGD) established upstream. The TGD impoundments were not responsible for the increased number of drought events, but they may have intensified the droughts and changed the frequency of classified droughts. However, the TGD contribution is limited in comparison with hydroclimatic influences. Hence, the recently increased droughts were due to hydroclimatic effects, with a less important contribution from anthropogenic influences.

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Contribution of transpiration and evaporation to precipitation: An ET‐Tagging study for the Poyang Lake region in Southeast China

2015

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In this study, a regional climate model-based evapotranspiration tagging (ET-Tagging) algorithm has been applied for the first time over Southeast China. Fifteen month simulations (October 2004 to December 2005 were performed to investigate where and to which extent the tagged evapotranspired water from the Poyang Lake region returns to the land surface as precipitation. The contributions of direct evaporation and transpiration were estimated separately using an extended ET-Tagging partitioning algorithm. In 2005, the contribution of moisture originating from the Poyang Lake region to the local annual precipitation in Southeast China reaches a value of up to 1.2%. A maximum contribution of 6% is found near the Poyang Lake region in August. In 2005, 69% of total tagged precipitation originates from direct evaporation of water whereas 31% from transpiration. In winter, precipitation originating from transpired moisture only accounts for around 10% of the total tagged precipitation, but in the summer season the contribution of transpiration increases up to 50%. To explore the source-target relations under consideration of the respective precipitation regime, we introduce source-specific precipitation efficiencies. For the period under investigation, the efficiency for direct evaporation generally dominates, except during the comparatively dry August and in the winter months. Our study shows that the location and the magnitude of tagged precipitation show large spatial and temporal variations. The comprehensive interactions between land surface characteristics and synoptic weather conditions control the annual cycle of the individual contributions to precipitation, emphasizing the important impacts of vegetation cover and land use on the atmospheric hydrological cycle.

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An investigation of enhanced recessions in Poyang Lake: Comparison of Yangtze River and local catchment impacts

Cited by 289 publications

References 31 publications

Integrated watershed management: evolution, development and emerging trends

Integrated watershed management: evolution, development and emerging trends

Hydroclimatological influences on recently increased droughts in China's largest freshwater lake

Contribution of transpiration and evaporation to precipitation: An ET‐Tagging study for the Poyang Lake region in Southeast China

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