Ecological impact of land reclamation on Jiangsu coast (China): A novel ecotope assessment for Tongzhou Bay

Muller, Jos R.M.; Chen, Yongping; Aarninkhof, S.G.J.; Chan, Ying‐Chi; Piersma, Theunis; Maren, D.S. van; Tao, Jianfeng; Wang, Zheng Bing; Gong, Zheng

doi:10.1016/j.wse.2020.04.001

Cited by 19 publications

(8 citation statements)

References 24 publications

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“…The applied hydrodynamic model is presented by Muller et al [28], and for details on grid design and bed levels ( Figure 1) we refer thereto. We do briefly reiterate the hydrodynamic model results and subsequently extend the model with a morphodynamic module.…”

Section: Setupmentioning

confidence: 99%

“…In this contribution, taking the development of the Tongzhou Bay port as a case study, we demonstrate how the "Building with Nature" concept can be used to more sustainably designed land reclamations. To quantify and validate habitat response to port development at Tongzhou bay, we elaborate further on the work of Muller et al [28], who developed a hydrodynamic model to form a ecotope map for Tongzhou bay. We expand on this approach by combining hydro-and morphodynamic modelling and shorebird distributions.…”

Section: Introductionmentioning

confidence: 99%

“…Methodologies to quantify such alternative designs are still largely under development. We expand on an approach by Muller et al [28], who quantified the impact of designs on wetland habitat by constructing an ecotope map. In this paper, we develop an interactive ecotope map in which the morphodynamic response of the environment to an intervention (siltation, erosion) is also accounted for.…”

Section: Introductionmentioning

confidence: 99%

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Building for Nature: Preserving Threatened Bird Habitat in Port Design

Muller

Chan

Piersma

et al. 2020

Water

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The fast economic development of the People’s Republic of China has created an increasing demand for usable land, resulting in large-scale land reclamations along the coastal zone. One of these regions is Tongzhou Bay (Jiangsu coast), a region characterized by large intertidal mudflats and deep tidal channels with potential for the development of agri-aquaculture and the construction of a deep-sea port. However, these intertidal mudflats also provide vital ecosystem services and support many wildlife species, including several endangered migratory shorebirds within the East Asian–Australasian Flyway. With increasing realization of the importance of maintaining such ecological values, a more integrated coastal development strategy is needed. This study aims to develop a sustainable integrated design for the Tongzhou Bay port, following a “Building with Nature” approach. We use a morphodynamic model to compute habitat suitability for two shorebird species (Great Knot Calidris tenuirostris and Bar-tailed Godwit Limosa lapponica). Several port configurations were developed on the basis of three design criteria: (1) create area for future port development, whilst (2) preserving existing high-value ecotopes for shorebirds and (3) enhance the natural accretion rate of such ecotopes. Simulation results showed a clear difference in siltation patterns, preservation and enhancement of preferred ecotopes. This work therefore demonstrates the potential and importance of morphological and habitat suitability modelling when designing large-scale reclamations and port constructions, especially in dynamic areas such as Tongzhou Bay.

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Section: Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Building for Nature: Preserving Threatened Bird Habitat in Port Design

Muller

Chan

Piersma

et al. 2020

Water

Self Cite

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“…In many coastal around the world, land reclamation is commonly practiced to accommodate economic growth [ 10 , 11 , 12 , 13 ]. Although coastal reclamation has brought rich economic benefits to local areas and promotes regional economic development, it has resulted in coastal pollution, habitat fragmentation, the loss of natural habitats, changes to the nearshore environment and further threats to ecosystem services [ 14 , 15 , 16 , 17 ]. Therefore, balancing the ecological costs and economic benefits of reclamation projects is necessary.…”

Section: Introductionmentioning

confidence: 99%

Research on the Limit Values of Reclamation Based on Ecological Security: A Case Study of Tongzhou Bay in Rudong, Jiangsu Province

Zhang

et al. 2022

IJERPH

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Due to the growing demand for land resources, many coastal reclamation projects have been implemented around the world in recent decades. Although coastal zone reclamation provides economic benefits, it produces a series of threats to coastal environments and ecosystems. Hence, the ecological costs and economic benefits of reclamation projects must be balanced. In this study, we select Tongzhou Bay, a key development area of the marine industry in the Jiangsu Province, as the research region to study the limits of reclamation control of the port operation area based on regional ecological security. First, we determine the standard limit values of the tidal catchment water line and the water dividing line, the change rate of the tidal flux ±5%, and water area of sandbars above the 0 m line based on key factors and evaluation indices for the ecological impact of reclamation in this region. Then, eight reclamation cases are investigated in Tongzhou Bay, which include the undeveloped natural state, development status, construction projects to be built, and possible construction scale based on the results of tidal current numerical simulation calculations. Although case 3 has impacts on Section 2 (DM2) tidal flux of less than 5% and on Section 1 (DM1) tidal flux of less than 10%, it causes a northward shift of the flood catchment water line in the middle of Yaosha. Finally, case 8 meets the requirements of the standard limit values of evaluation indicators, e.g., 1455 hectares of reclamation is the limit value to maintain the natural state of the Sanshahong channel and the stability of the tidal creek system and Yaosha. Therefore, the results suggest optimizing the structure and layout of breakwaters, controlling the restriction of reclamation, and further maintaining and protecting the ecological function of Tongzhou Bay.

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“…With rapid socio-economic development, land reclamation has become an important way to expand land space in coastal cities and countries. The intense tidal flat utilization directly or indirectly changes the original morphology and natural physical and chemical processes of the coastal zone (Muller et al 2020;Tian et al 2016). It also changes the dynamic geomorphology pattern of estuaries and increases the potential risks of the coastal zone.…”

Section: Introductionmentioning

confidence: 99%

Impacts of land reclamation projects on hydrodynamics and morphodynamics in the highly altered North Branch of the Changjiang Estuary

Zhang

Fan

Feng

et al. 2022

Anthropocene Coasts

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The estuary is highly dynamic and sensitive to external and internal forcing. We examine a chain reaction of hydrodynamic and morphodynamic responses to a series of land reclamation projects during the period 1997 to 2017 in the North Branch of the Changjiang Estuary through the Digital Elevation Model (DEM) comparison and the numerical simulation by the Finite Volume Community Ocean Model (FVCOM). The results show that tidal amplification was further strengthened by the artificially reduced channel volume in the middle and upper segments of the North Branch due to the implementation of several large-scale land-reclamation projects in the first stage (1997–2007), and the channel siltation in the middle and upper segments was in turn further promoted by the increased tidal flows with flood dominance. In the second stage (2007–2017), tidal amplification was relaxed by the channel narrowing project at the lower segment and the waterway improvement project through channel dredging works at the middle and upper segments. Contemporary erosion volume was almost balanced by the accretion volume in the North Branch because of the weakening dominance of flood over ebb flows. Spatiotemporal variation in channel accretion and erosion patterns in response to estuarine engineering projects was vividly mirrored by the change of simulated bed shear stress in that the areas with increased (decreased) bed shear stress underwent severe erosion (accretion). These findings highlight again the dynamic feature of tide-dominated estuaries and the importance of simulation tools to the estuarine management.

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Ecological impact of land reclamation on Jiangsu coast (China): A novel ecotope assessment for Tongzhou Bay

Cited by 19 publications

References 24 publications

Building for Nature: Preserving Threatened Bird Habitat in Port Design

Building for Nature: Preserving Threatened Bird Habitat in Port Design

Research on the Limit Values of Reclamation Based on Ecological Security: A Case Study of Tongzhou Bay in Rudong, Jiangsu Province

Impacts of land reclamation projects on hydrodynamics and morphodynamics in the highly altered North Branch of the Changjiang Estuary

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