An evaluating system for wetland ecological health: Case study on nineteen major wetlands in Beijing-Tianjin-Hebei region, China

Chen, Wei; Cao, Chunxiang; Liu, Di; Tian, Rong; Wu, Chunying; Wang, Yiqun; Yi-fan, Qian; Ma, Guoqiang; Bao, Daming

doi:10.1016/j.scitotenv.2019.02.325

Cited by 66 publications

(28 citation statements)

References 21 publications

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“…Based on previous studies, we divided the research scales of EHA into three levels scale, e.g., large, medium, and small scale. The large-scale research refers to the study with global or national as evaluation units [24,27]; the medium-scale research was taking provincial or municipal administrative district as evaluation units [25,31]; and the small-scale research was based on the evaluation unit of a specific nature conservation site [41]. Our study is the world natural heritage of Bayanbulak, and belongs to the small-scale ecosystem health assessment.…”

Section: Ecosystem Health Assessment Frameworkmentioning

confidence: 99%

“…In other words, it considers the services provided by the ecosystem, that is, the direct and indirect ecological functions served by it for humans [23]. Research on the health of ecosystems also involves different scales, which can include the global scale, regional scales with administrative units, and scales specific to the ecosystem in question [24][25][26][27][28][29][30][31][32]. At present, most studies on EHA are performed on the large-to-medium regional scale, allowing one to understand the trends in ecosystem health.…”

Section: Introductionmentioning

confidence: 99%

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Ecosystem Health Assessment of World Natural Heritage Sites Based on Remote Sensing and Field Sampling Verification: Bayanbulak as Case Study

et al. 2020

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Monitoring the ecosystem health for world natural heritage sites is essential for protecting them and benefits the formulation of more targeted protection policies. This study used Bayanbulak world natural heritage site as a case, established a framework for assessing the ecosystem health through remote sensing based on the parameters of ecosystem vigour, organization, resilience, and services. Then, we verified the obtained results through field sampling. The results show that the ecosystem health in the overall study area had declined over time, however, the health within the property zone remained at high levels and stable. The area proportion of low health was low and primarily distributed in the buffer zone. Thus, in general, the ecosystem in the study area was healthy. Besides, the ecosystem health exhibited distinct spatial agglomeration characteristics, and the degree of agglomeration enhanced over time. In addition, the field vegetation samplings were consistent with the changes in the ecosystem health levels, therefore, the result of RS monitoring of ecosystem health were credible. Thus, this study provides a scientific basis for heritage managers to formulate suitable ecological protection policies and should aid further research on the ecological monitoring of heritage sites.

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Section: Ecosystem Health Assessment Frameworkmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ecosystem Health Assessment of World Natural Heritage Sites Based on Remote Sensing and Field Sampling Verification: Bayanbulak as Case Study

et al. 2020

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“…It is worth noting that from 2000-2015, the average annual precipitation in the study area increased significantly, and the wetland system shrinkage gradually slowed. The influence of human activity, however, remains the most important factor in wetland system shrinkage in the study area (Chen et al, 2019;Fluet-Chouinard et al, 2015;Hudon et al, 2018;Zhang et al, 2019). Fig.…”

Section: Discussionmentioning

confidence: 97%

An evaluation and regulation method for stereoscopic spatial connectivity of a wetland system based on hydrological change: A case study of the Heilongjiang River Basin in China

Yang

Hu²,

Wang

et al. 2020

Preprint

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The weakened connectivity of wetland systems is the key factor leading to the destruction, degradation, and disappearance of wetlands. The study of the change of wetland system connectivity enables understanding the hydrological process in wetland system and providing significant support for the study of ecological water demand. However, research on the connectivity of wetland systems has primarily focused on the intuitive connectivity in terms of hydrology and geomorphology in recent years, while the impact of wetland systems on habitat has been ignored. In this study, an innovative method was applied to evaluate and regulate the stereoscopic spatial connectivity (SSC) of the wetland system in the Heilongjiang River Basin in China (HRBC). In this method, the water requirements of typical organisms in the region were considered, and the hydrological trend in the wetland system as well as the health conditions of the SSC were analyzed using remote sensing image. A regulation mode for improving the stereoscopic spatial connectivity index (SSCI) was proposed. The results revealed that over the past 35 years, the wetland system in the study area shrank significantly, with the SSCI decreasing from 41.30% in 1980 to 35.08% in 2015. By comparing the correlation among temperature, precipitation, agricultural land, construction land, and the wetland system during the same period, it was proven that human activity is the major driving force behind the observed wetland system shrinkage. Subsequently, the key protected areas required to maintain the SSC of the wetland system were clarified, and the key recovery areas were determined according to the three scenarios of 'high-medium-low' feasibility, which greatly improved the SSCI and generalization route (GR) after regulation. In general, the proposed SSC evaluation methods can fully reflect the ecohydrological process of wetland systems. The methods also scientifically quantify the significant effects of the regulation mode, which has certain relevance for the evaluation and regulation of wetland systems in other regions.

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“…Wetlands are among the most productive and vulnerable ecosystems in the world, have fundamental ecological functions, and play an irreplaceable role in the maintenance of biodiversity and human development [1][2][3]. Despite the relevant departments' efforts to restore natural wetlands for human well-being [4], global change and intense anthropogenic pressure have destroyed more than half of global wetlands during the last century [5].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Water Quality and Heavy Metals in Wetlands along the Yellow River in Henan Province

et al. 2020

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Assessing spatiotemporal variation in water quality and heavy metals concentrations in wetlands and identifying metal contamination source are crucial steps for the protection and sustainable utilization of water resources. Using the water quality identification index (Iwq), heavy metal pollution index (HPI), hierarchical cluster analysis (HCA) and redundancy analysis (RDA), we evaluated spatiotemporal variation in water quality and heavy metals concentrations, and their interrelation in wetlands along the middle and lower Yellow River. The average Iwq was highest during flood season but the average HPI was lowest in the same season. Meanwhile, the trend in mean HPI across three hydrological seasons was the opposite to that of mean Iwq. There was significant variation in wetlands water pollution status across seasons. During the flood season, the wetlands in the affected area with hanging river were seriously polluted. In other seasons, pollution in the artificial wetlands was even more severe. Moreover, serious pollution of wetlands in belt transect #03 (Yuanyang-Zhongmu) was more frequent. Dissolved oxygen and chemical oxygen demand strongly influenced heavy metal concentrations, while other water quality parameters had different influences on heavy metal concentrations in different hydrological seasons. The causes of water pollution were divided into natural factors and human disturbance (with potential relationships between them). The polluted wetlands were greatly affected by the Yellow River during the flood season while they were more impacted by agricultural and domestic sewage discharge in other seasons. However, heavy metal deposition and leaching into riparian wetlands were still affected by diverse channel conditions. If this trend is allowed to continue unabated, wetlands along the middle and lower Yellow River are likely to lose their vital ecological and social functions.

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An evaluating system for wetland ecological health: Case study on nineteen major wetlands in Beijing-Tianjin-Hebei region, China

Cited by 66 publications

References 21 publications

Ecosystem Health Assessment of World Natural Heritage Sites Based on Remote Sensing and Field Sampling Verification: Bayanbulak as Case Study

Ecosystem Health Assessment of World Natural Heritage Sites Based on Remote Sensing and Field Sampling Verification: Bayanbulak as Case Study

An evaluation and regulation method for stereoscopic spatial connectivity of a wetland system based on hydrological change: A case study of the Heilongjiang River Basin in China

Evaluation of Water Quality and Heavy Metals in Wetlands along the Yellow River in Henan Province

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