Sustainability Assessment of Water Resources in Beijing

Yu, Haijiao; Yang, Zihan; Li, Bo

doi:10.3390/w12071999

Cited by 14 publications

(15 citation statements)

References 78 publications

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“…What can be inferred from Figure 9 is that the lake ecosystem resilience is falling away from its natural state due to increasing rates of drivers, pressures, states, and impactsan indicator of the lake ecosystem's deterioration. Similar scenarios have been reported in China [100], New Zealand [101], and the Mekong river in China, Myanmar, Thailand, Lao PDR, Cambodia, and Vietnam [102]. The effect of demographic, socio-economic, and climatic factors as drivers, pressures, and environmental states were significant (p < 0.05) and negative, suggesting that these indicators negatively influenced the lake ecosystem resilience and contributed to its degradation.…”

Section: Lake Malombe Ecosystem Resilience and Influencing Factorsupporting

confidence: 72%

Application of DPSIR and Tobit Models in Assessing Freshwater Ecosystems: The Case of Lake Malombe, Malawi

Kosamu

Makwinja

Kaonga

et al. 2022

Water

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Inland freshwater shallow lake ecosystem degradation is indistinctly intertwined with human-induced factors and climate variability. Changes in climate and human-induced factors significantly influence the state of lake ecosystems. This study provides evidence of the driver, pressure, state, impact, and response (DPSIR) indicators for freshwater lake ecosystem dynamics, taking Lake Malombe in Malawi as a case study. We used the DPSIR framework and Tobit model to achieve the study’s objectives. The study’s findings indicate that top-down processes gradually erode Lake Malombe’s ecosystem state. The lake resilience is falling away from its natural state due to increasing rates of drivers, pressures, and impacts, indicating the lake ecosystem’s deterioration. The study shows that demographic, socio–economic, climatic drivers, pressures, state, and responses significantly (p < 0.05) influenced the lake ecosystem’s resilience. The study suggests that substantial freshwater ecosystem management under the current scenario requires a long-term, robust, and sustainable management plan. The findings from this study provide a roadmap for short-term and long-term practical policy-focused responses, particularly in implementing a freshwater ecosystem restoration programs in Malawi and Africa more broadly.

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Section: Lake Malombe Ecosystem Resilience and Influencing Factorsupporting

confidence: 72%

Application of DPSIR and Tobit Models in Assessing Freshwater Ecosystems: The Case of Lake Malombe, Malawi

Kosamu

Makwinja

Kaonga

et al. 2022

Water

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“…This threshold

was usually subjectively chosen in the literature. The subjective choice of

varied from study to study, some of the choices are 0.55 [ 39 ], 0.6 [ 40 ], and 0.7 [ 41 ]. In our paper, we showed that this subjectivity would lead to inconsistent and even opposite conclusions in water resources evaluation and is prone to errors ( Figure 2 ).…”

Section: Discussionmentioning

confidence: 99%

“…It is generally recommended that

be taken in [0.5, 0.7] [ 58 , 59 , 89 ]. This threshold parameter

is often subjectively chosen in this range of [0.5, 0.7] in the previous literature [ 38 , 39 , 40 , 41 ]. For a selected

, the evaluation security rating is selected as the minimal k such that

is greater than

.…”

Section: Methodsmentioning

confidence: 99%

“…Instead of using a subjective confidence threshold parameter to draw boundaries between Safe vs. Unsafe, which has been used by many studies in the literature [ 38 , 39 , 40 , 41 ], we demonstrated that the limitation of such method is that subjectivity in the choice of the confidence threshold could lead to contradictory conclusions. Furthermore, we addressed this issue of subjectivity by proposing a modified method that samples a range of thresholds to obtain a more objective measure of water resources security.…”

Section: Introductionmentioning

confidence: 99%

“…Compared to other frameworks like SDM and PAM, the DPSIR framework includes more measures and is more flexible [ 23 ]. The DPSIR framework has been widely applied in water resources and ecological security assessment studies [ 19 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 ]. Some primitive versions and new variants of the DPSIR framework were also used in the literature, e.g., PSR model [ 45 , 46 ], DPSI model [ 33 ], PSIR model [ 47 , 48 ], DPSR model [ 49 ], and DPSIRM model [ 36 , 50 ].…”

Section: Introductionmentioning

confidence: 99%

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An Assessment of Temporal and Spatial Dynamics of Regional Water Resources Security in the DPSIR Framework in Jiangxi Province, China

Wang

et al. 2022

IJERPH

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Water resources are critical for the survival and prosperity of both natural and socioeconomic systems. A good and informational water resources evaluation system is substantial in monitoring and maintaining sustainable use of water. The Driver-Pressure-State-Impact-Response (DPSIR) framework is a widely used general framework that enabled the measurement of water resources security in five different environmental and socioeconomic subsystems: driver, pressure, state, impact, and response. Methodologically, outcomes of water resources evaluation based on such framework and using fuzzy set pair analysis method and confidence interval rating method depend critically on a confidence threshold parameter which was often subjectively chosen in previous studies. In this work, we demonstrated that the subjectivity in the choice of this critical parameter can lead to contradicting conclusions about water resources security, and we addressed this caveat of subjectivity by proposing a simple modification in which we sample a range of thresholds and pool them to make more objective evaluations. We applied our modified method and used DPSIR framework to evaluate the regional water resource security in Jiangxi Province, China. The spatial-temporal analysis of water resources security level was carried out in the study area, despite the improvement in Pressure, Impact, and Response factors, the Driver factor is found to become less safe over the years. Significant variation of water security across cities are found notably in Pressure and Response factors. Furthermore, we assessed both cross-sectionally and longitudinally the inter-correlations among the DPSIR nodes in the DPSIR framework. The region-specific associations among the DPSIR nodes showed important deviances from the general DPSIR framework, and our analysis showed that in our study region, although Responses of regional government work effectively in improving Pressure and State security, more attention should be paid to improving Driver security in future regional water resources planning and management in Jiangxi Province, China.

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Proposal for a tiered regulatory framework for the aquatic risk assessment of pesticides in Brazil

Santos,

Casallanovo,

Scorza Júnior

et al. 2024

Integr Envir Assess & Manag

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Aquatic risk assessment is essential to guarantee the sustainable use of pesticides and the conservation of water resources near agricultural fields. This article discusses a proposal for a tiered regulatory framework for the aquatic risk assessment of pesticides in Brazil. The first step is problem formulation, which includes establishing general and specific protection goals. In the exposure assessment, the Estimated Environmental Concentrations in water should be calculated based on realistic worst‐case assumptions regarding application rate and frequency, the entry into the edge‐of‐field water body, and fate in the water body, using scenario‐dependent models suggested by the Brazilian Environmental Agency. These calculations can be refined by including Efate studies with variable exposures to reflect realistic environmental conditions accurately and include mitigation measures that impact the modeling. In the hazard assessment, ecotoxicological data for toxicity to fish, aquatic invertebrates, algae, and aquatic plants should be required for all pesticides based on standardized protocols and species. Tier 2 has several refinement options, including incorporating toxicity data from additional test species and effect modeling. In Tier 3, population‐ and community‐level effects are evaluated using semi‐field studies. Considering the case study in Brazil, Tier 1 demonstrated that, from the 12 pesticides that were assessed, seven (58%) failed based on the value of the Risk Quotient. In Tier 2, when exposure refinement options and mitigation measures such as buffer zones are considered, all seven pesticides, for which Tier 1 indicated risk, still failed the assessment. The risk for four of these seven pesticides could be refined by considering toxicity information from additional species. Refinement options and mitigation measures that could be applied to the agricultural scenario in Brazil were discussed. In conclusion, the proposed tiered risk assessment is a feasible way to evaluate whether a pesticide will pose an unacceptable risk to aquatic organisms. Integr Environ Assess Manag 2024;00:1–15. © 2024 The Authors. Integrated Environmental Assessment and Management published by Wiley Periodicals LLC on behalf of Society of Environmental Toxicology & Chemistry (SETAC).

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Sustainability Assessment of Water Resources in Beijing

Cited by 14 publications

References 78 publications

Application of DPSIR and Tobit Models in Assessing Freshwater Ecosystems: The Case of Lake Malombe, Malawi

Application of DPSIR and Tobit Models in Assessing Freshwater Ecosystems: The Case of Lake Malombe, Malawi

An Assessment of Temporal and Spatial Dynamics of Regional Water Resources Security in the DPSIR Framework in Jiangxi Province, China

Proposal for a tiered regulatory framework for the aquatic risk assessment of pesticides in Brazil

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