A systematic review on urban blue-green infrastructure in the south Asian region: recent advancements, applications, and challenges

Water Science & Technology, Год журнала: 2024, Номер 89(2), С. 382 - 403

Опубликована: Янв. 12, 2024

This study uses a Systematic Literature Review (SLR) process to know the present status of research on urban Blue-Green Infrastructure (BGI) in lower-middle-income countries South Asian region, specifically India, Bangladesh, Sri Lanka, Bhutan, Nepal, and Pakistan, which produced 77 relevant publications after detailed scanning published between 2013 2022. It was aimed analyze variations BGI's mentions different regions, identify BGI components found literature their promote sustainability, initiatives, priorities, knowledge gaps for future research. The review reveals significant differences distribution among countries, with majority articles focusing green spaces compared bluescapes concentrating topics like local inhabitant's perception spaces, advantages implementing nature-based solutions, role infrastructures minimizing heat island effect, air pollution, etc. Articles highlighted lack governance challenges designing network. However, discussing holistic methodology implement promoting sustainability were limited. Gaps still exist determining appropriate strategy scope identification, creation, management, integrating it existing grey infrastructure.

Язык: Английский

---

Low-cost monitoring systems for urban water management: Lessons from the field

Water Research X, Год журнала: 2024, Номер 22, С. 100212 - 100212

Опубликована: Янв. 1, 2024

Sound urban water management relies on extensive and reliable monitoring of infrastructure. As low-cost sensors networks have become increasingly available for environmental monitoring, researchers practitioners must consider the benefits disadvantages such technologies. In this perspective paper, we highlight six technical socio-technological considerations technology to reach its full potential in field management, including: barriers implementation, complementarity with traditional sensing technologies, sensor reliability, added value produced information, opportunities democratize data collection, economic costs technology. For each consideration, present recent experiences from our own work broader literature identify future research needs address current challenges. Our experience supports strong technology, particular that it promotes innovative Future efforts should focus more systematic documenting lower designing, implementing, testing networks, assessing economic, social, deployments.

Язык: Английский

---

Blue-Green Infrastructure (BGI) network in urban areas for sustainable storm water management: A geospatial approach

City and Environment Interactions, Год журнала: 2022, Номер 16, С. 100087 - 100087

Опубликована: Сен. 6, 2022

In a natural landscape, when rainfall reaches the Earth's surface, water either percolates into ground or it flows as run-off finally reaching body such lake river. Due to rapid urbanization, landcover in cities is being replaced with impervious surfaces which significantly alters patterns and processes of urban landscape resulting mismanagement storm hence flooding issues. Integrated Blue-Green Infrastructure (BGI), conservation approach nested networks blue green spaces (permeable pavements, bioswales, rain gardens, tree cover, small ponds wetlands) can provide an alternative conventional management along its multiple environmental benefits. The objective this paper develop geospatial technology-based for identification BGI network by employing graph theory gravity model sustainable city Ahmedabad, India. study introduces replicable integrating five key criteria i.e., slope, drainage density, land hydrologic soil group proximity roads Suitability Analysis, selecting core patches nodes GIS environment identifying corridors least cost path function followed assessment selected using model. Analysis surface characteristics reveals that Ahmedabad has high suitability implementation BGI. A variety open throughout parks, gardens lakes form node are connected developed methods practices adopted research represented innovative landscape.

Язык: Английский

---

Occurrence of Emerging Contaminants in Southeast Asian Environments: Present Status, Challenges, and Future Prospects

ACS ES&T Water, Год журнала: 2022, Номер 2(6), С. 907 - 931

Опубликована: Май 27, 2022

The status of emerging contaminant (EC) profiles in Southeast Asia is currently unclear and often overshadowed by studies conducted developed regions such as North America, Europe, Asia. EC research especially critical due to its high population density poor sanitation infrastructure that introduce large amounts ECs into the aquatic environment. This literature Review investigated 11 Asian countries. Key pharmaceutical groups antibiotics (sulfamethoxazole, trimethoprim, sulfamethazine, ciprofloxacin, lincomycin) nonsteroidal anti-inflammatory drugs (NSAIDs) (diclofenac, acetaminophen, ibuprofen) were among most frequently studied group ECs, while other significant interests this included per- polyfluoroalkyl substances (PFAS) phthalate esters (PAEs). With countries having agrarian economies onset climate change, overutilization pesticides meet commercial demand for agriculture livestock products a major threat environments even human health region. identifies understudied disinfectants transformation byproducts recommends future directions Asia, particularly focusing on seasonal trends input surface groundwater environments.

Язык: Английский

---

A review of nature‐based infrastructures and their effectiveness for urban flood risk mitigation

Wiley Interdisciplinary Reviews Climate Change, Год журнала: 2024, Номер 15(5)

Опубликована: Май 7, 2024

Abstract Anthropogenic climate change and rapid urbanization are contributing to more frequent intense urban flooding. There is widespread agreement that traditional gray infrastructure, a single‐purpose solution, fails address the problem properly contributes adverse direct indirect environmental impacts. As such, Nature‐based Solutions (NbS) can provide improved outcomes flood risk management along with co‐benefits society economy, as they have numerous benefits incuding often smaller carbon footprint or even sometimes sequestering carbon. However, there ambiguity misconception about NbS uptake of for management, which still inadequate compared infrastructure. This research seeks explore various nature‐based infrastructures including their present status application build resilience flooding through systematic literature review. The robustness some questionable varies across different spatial scales from plot watershed. work stand‐alone in many cases well supplement infrastructure achieve wider benefits. review provides comparison solutions identifies mitigation include elements, an overview effectiveness scales. findings should contribute better understanding appropriate diverse options NbS, gray, hybrid designs by policymakers decision‐makers enable them effectively designing implementing measures. article categorized under: Climate Development > Urbanization, Development, Change Vulnerability Adaptation Learning Cases Analogies

Язык: Английский

---

Connecting blue-green infrastructure elements to reduce combined sewer overflows

Journal of Environmental Management, Год журнала: 2024, Номер 365, С. 121465 - 121465

Опубликована: Июнь 19, 2024

By infiltrating and retaining stormwater, Blue-Green Infrastructure (BGI) can help to reduce Combined Sewer Overflows (CSOs), one of the main causes urban water pollution. Several studies have evaluated ability individual BGI types CSOs; however, effect combining these elements, likely occur in reality, has not yet been thoroughly evaluated. Moreover, CSO volume reduction potential relevant components drainage system, such as detention ponds, quantified using hydrological models. This study presents a systematic way assess combinations mitigate discharge catchment near Zurich (Switzerland). Sixty combinations, including four elements (bioretention cells, permeable pavement, green roofs, ponds) different implementation rates (25%, 50%, 75%, 100% available sewer area) are for runoff routing schemes. Results reveal that provide substantial reductions; ponds potentially increase frequency, due prolongation. When from upstream areas is routed BGI, reductions differ cumulative achieved by types, indicating sum effects cannot accurately predict combined scenarios. larger consistently more cost-effective than small areas, since additional does outweigh costs. The best-performing combination depends on desired objective, being reduction, frequency or cost-effectiveness. emphasizes importance mitigation plans, highlighting their critical factors-BGI area, routing- offering novel approach develop tailored strategies catchments facing challenges.

Язык: Английский

---

Exploring Traditional Knowledge and Potential Uses of Local Freshwater Algae and Aquatic Plants in Thai Wetland Communities

Diversity, Год журнала: 2025, Номер 17(1), С. 63 - 63

Опубликована: Янв. 17, 2025

This study explored the ecological and cultural significance of Thailand’s wetlands, particularly Nong Bong Kai Non-Hunting Area Lower Songkhram River. These areas were essential for biodiversity, flood prevention, supporting local livelihoods, serving as food sources, biofertilizers, natural water purifiers. However, these wetlands faced mounting threats from pollution, habitat loss, climate change, jeopardising their health biodiversity. Ethnobotanical surveys conducted to assess regional demographic patterns in using recognising algae aquatic plants. The collected data highlighted traditional knowledge held primarily by older community members. Principal component analysis (PCA) was employed analyse generational differences utilisation, focusing on potential gap due migration trends among younger individuals. revealed significant biodiversity between wetland areas, with exhibiting greater diversity plant species. Older residents demonstrated higher recognition use plants sustainable practices, though a evident. suggested that may be at risk migrate urban areas. research underscored need conservation educational initiatives bridge gaps engage generations resource management. By integrating practices high-impact species like Lemna perpusilla Torr. Hydrilla verticillate (L.f.) Royle, region-specific efforts could enhance sustainability, preserve support ecosystem regions.

Язык: Английский

---

Nature-Based Solutions for Climate Change Adaptation and Resilience in Urban Informal Settlements: insights from Kibera, Kenya and Villa 20, Argentina

Nature-Based Solutions, Год журнала: 2025, Номер unknown, С. 100216 - 100216

Опубликована: Янв. 1, 2025

Язык: Английский

---

Scaling Nature‐Based Solutions for Fluvial Floods: A Worldwide Systematic Review

Wiley Interdisciplinary Reviews Water, Год журнала: 2025, Номер 12(2)

Опубликована: Март 1, 2025

ABSTRACT Despite increased understanding and adoption of nature‐based solutions (NBSs) within urban coastal areas, large‐scale NBS for fluvial flood mitigation remain challenging to study implement. A stronger evidence base is needed identify critical research gaps best inform the design deployment on watershed scale. We synthesize performance co‐benefits based a systematic review 131 peer‐reviewed papers worldwide, developing an Ecosystem Focus Type (EFT) compare across NBS. While we find that can mitigate floods all EFTs, our also highlights inconsistencies in measurement methods, dearth empirical case studies, large variability reported values limit generalization comparison Co‐benefits are numerous, but few quantified, methods vary with regard specific Social benefits NBS, including communities most need support, infrequently part these studies. There clear develop common standards guidance which measures key consider monitor co‐benefits. The success will depend practice guided by transdisciplinary systems thinking approaches deliver evidence‐based, community‐driven outcomes.

Язык: Английский

---

Nature-based solutions in informal settlements: A systematic review of projects in Southeast Asian and Pacific countries

Environmental Science & Policy, Год журнала: 2023, Номер 145, С. 275 - 285

Опубликована: Апрель 25, 2023

Nature-based solutions (NbS) have gained traction in Southeast Asia and the Pacific region over last decade. While benefits of NbS are established for most urban contexts, more research is necessary to examine potential these Global South, particularly historically disadvantaged contexts such as informal settlements. Responding this gap, we analyse both grey academic sources past projects settlements Asian countries. We identified six main types that used address various social, ecological, cultural challenges Some different from those described North, ranging use traditional community gardens enhance food security implementation constructed wetlands wastewater treatment systems. often framed grassroots initiatives spearheaded by local communities or technical systems implemented within "upgrading programs" delivered multilateral banks, researchers international organisations. Analysing motivations behind projects, provide insights into which been response specific needs efforts promote climate adaptation, support compensate residents disruptions. outline important social political implications still understudied literature, framing "placeholders" future development "compensation" disruptions caused resettlement projects.

Язык: Английский

---