Sustainability assessment of the Liaohe Estuary wetland based on emergy analysis

Su, Fangli; Liu, Haisheng; Zhu, Dan; Li, Lifeng; Wang, Tieliang

doi:10.1016/j.ecolind.2020.106837

Cited by 12 publications

(4 citation statements)

References 26 publications

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“…It has been applied in many different fields, such as industrial system [64], urban eco-economic system [65], forestry ecosystem [66], Land resource management [67] and so on. Emergy analysis method improves people's understanding of complex system and promoted the advancement of research [68]. Drawing lessons from the advantages of emergy in dealing with the relationship between unmeasurable factors, this paper presents the research system of watershed ECS based on emergy analysis, and specifically calculates the watershed ECS in the TGRR, which verifies the feasibility and advancement of applying emergy analysis to EC research.…”

Section: The Rationality and Reliability Of Emergy Analysismentioning

confidence: 68%

A County-Scale Spillover Ecological Value Compensation Standard of Ecological Barrier Area in China: Based on an Extended Emergy Analysis

Zhang

et al. 2021

Agriculture

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Ecological compensation (EC) is an important way to solve the imbalance of cross-regional economic development and realize regional coordinated development. How to quantify the standard of EC has become a hot research topic. Firstly, this paper selected the Three Gorges Reservoir Region (TGRR) as the study area, and constructed a cross-regional spillover ecological value measurement model based on the extended emergy analysis. From the perspective of the “ecology–economy–society” complex ecosystem, this paper used emergy to reflect the social, economic, and ecological function and service value of the TGRR, and estimated the ecosystem emergy supply and consumption in the TGRR. Then, comparing the watershed ecosystem emergy supply and consumption, we can judge the status of the ecological surplus and deficit of the TGRR, and transfer the spillover ecological emergy to spillover ecological value (SEV) by using the emergy currency ratio (ECR). Finally, combined with different actual payment level coefficient, we can obtain a relatively objective and robust compensation standard. The results show that the SEV of the TGRR in 2016 is 2.70 × 1011 USD, which indicates that the TGRR is in the state of ecological surplus. The TGRR should get EC about 2.85 × 1011 USD according to the ECR. Based on the research results, it is suggested to expand the transfer payment to the TGRR. At the same time, it is suggested to formulate different ecological compensation standard (ECS) according to regional differences, which has important practical significance to establish the allocation standard of EC, and provides a typical case basis for other large reservoir areas or typical reservoir areas.

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Section: The Rationality and Reliability Of Emergy Analysismentioning

confidence: 68%

A County-Scale Spillover Ecological Value Compensation Standard of Ecological Barrier Area in China: Based on an Extended Emergy Analysis

Zhang

et al. 2021

Agriculture

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“…Due to the flat terrain and high groundwater table, this region is composed of wet and saline soil. Thus, the natural vegetation in this area consists of salt-tolerant herbs, grasses, and shrubs (Su et al, 2020).…”

Section: The Yellow River Deltamentioning

confidence: 99%

Study on the change monitoring of typical estuarine wetland and its effect on ecological factors in Bohai Rim region, China

Liu

2022

Front. Ecol. Evol.

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Estuarine wetlands provide an especially ecological home for various flora and fauna, with fragile ecological structures and functions easily affected by the external disturbances of both anthropogenic and natural activities. Recently, wetlands (such as water and marsh) of the Bohai Rim region have been, and continue to be, lost or altered under the influence of both local urbanization and economic development. There is an increasing need for crucial essential wetland change detection as one of the most critical works for relevant research. The paper’s objective focuses on detecting the annual and interannual changes at a large spatial scale for understanding the mainly changed cover type of estuarine wetlands and measuring its impact on coastline ecological factors. Two typical study areas, including the Shuangtai Estuary wetland and Yellow River Delta, are selected for the assessment of changes to wetlands in Bohai Rim region, China. Additionally, Landsat TM/OLI images between 2005 and 2015, as the standard years for change detection, are used as the experimental data resources. To realize the rapid and automatic detection of change to wetland at a larger scale, a method is constructed to extract the change information from satellite images integrating the dynamic ratio and the max-difference algorithm. Based on the remote sensing base ecological index (RSEI), three ecological indexes include water body index, vegetation index, and soil index, calculated the annual maximum difference and the inter-annual dynamic rate of change to wetland. Furthermore, wetland changes are graded and evaluated five significant levels from the annual yearly and interannual scales. Results show several significant findings: (1) from 2005 to 2015, the ecological change with an overall improvement trend was in two monitoring areas of Bohai Rim region. The annual change of ecological factors in the positively changed area (improve) was more and more significant, with the mainly converted type of the expansion of paddy field. In the negatively changing area (degrade), annual ecological change was more and more insignificant, with the main expansion of bare land. (2) The significantly increased accumulation of normalized difference vegetation index (NDVI) was the main ecological change feature of the Shuangtai Estuary wetland. The significant regional changes in the Yellow River Delta were the interaction of ecological factors, included modified normalized difference water index (MNDWI), NDVI, and normalized difference soil index (NDSI). The study on the change detection of wetland and its influence on ecological factors in Bohai Rim region between two different periods enriches remote sensing monitoring technology of change to wetlands, betters quantitative evaluation of ecological factors, and provides updated data support for the wetland natural resource inventory at the various scales.

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“…Su et al [112] identified the ecosystem value and sustainability of the Liaohe Estuary wetland (LEW). This study aimed to (i) define the wetland flows based on the sustainability analysis, (ii) assess the relationship between the input and output of the LEW, and (iii) investigate the sustainability of the wetland ecosystem and suggest a sustainable future for the LEW through the sustainability analysis.…”

Section: Used Object-based and Photo-interpretation Approachesmentioning

confidence: 99%

Urban Wetlands: A Review on Ecological and Cultural Values

Alikhani

Nummi

Ojala

2021

Water

107

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Wetlands are a critical part of natural environments that offer a wide range of ecosystem services. In urban areas, wetlands contribute to the livability of cities through improving the water quality, carbon sequestration, providing habitats for wildlife species, reducing the effects of urban heat islands, and creating recreation opportunities. However, maintaining wetlands in urban areas faces many challenges, such as the reduction of hydrological functions, changed water regimes due to barriers, contamination by wastewater, habitat loss due to land-use change, and loss of biodiversity due to the entry of alien species. In this article, we review the theoretical background of wetlands in urban areas through the existing studies in the literature. We provide knowledge on urban wetlands and highlight the benefits of these wetlands in urban areas. These benefits include sustainability, biodiversity, urban heat islands, social perception, and recreation values. We also summarize the objectives, methodologies, and findings of the reviewed articles in five tables. In addition, we summarize the critical research gaps addressed in the reviewed articles. Our review study addresses the research gaps by performing a rigorous analysis to identify significant open research challenges, showing the path toward future research in the field. We further discuss and highlight the role of policymakers and stakeholders in preserving wetlands and finally present our conclusions.

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Sustainability assessment of the Liaohe Estuary wetland based on emergy analysis

Cited by 12 publications

References 26 publications

A County-Scale Spillover Ecological Value Compensation Standard of Ecological Barrier Area in China: Based on an Extended Emergy Analysis

A County-Scale Spillover Ecological Value Compensation Standard of Ecological Barrier Area in China: Based on an Extended Emergy Analysis

Study on the change monitoring of typical estuarine wetland and its effect on ecological factors in Bohai Rim region, China

Urban Wetlands: A Review on Ecological and Cultural Values

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