scholarly journals Ecosystem Service Modelling to Support Nature-Based Flood Water Management in the Vietnamese Mekong River Delta

2021 ◽  
Vol 13 (24) ◽  
pp. 13549
Author(s):  
Nguyet Anh Dang ◽  
Rubianca Benavidez ◽  
Stephanie Anne Tomscha ◽  
Ho Nguyen ◽  
Dung Duc Tran ◽  
...  

Deltas are among the most productive and diverse global ecosystems. However, these regions are highly vulnerable to natural disasters and climate change. Nature-based solutions (Nbs) have been increasingly adopted in many deltas to improve their resilience. Among decision support tools, assessment of ecosystem services (ES) through spatially explicit modelling plays an important role in advocating for Nbs. This study explores the use of the Land Utilisation and Capability Indicator (LUCI) model, a high-resolution model originally developed in temperate hill country regions, to map changes in multiple ecosystem services (ES), along with their synergies and trade-offs, between 2010 and 2018 in the Vietnamese Mekong Delta (VMD). In so doing, this study contributes to the current knowledge in at least two aspects: high-resolution ES modelling in the VMD, and the combination of ES biophysical and economic values within the VMD to support Nbs implementation. To date, this is the highest resolution (5 by 5 m) ES modelling study ever conducted in the VMD, with ~1500 million elements generated per ES. In the process of trialling implementations of LUCI within the VMD’s unique environmental conditions and data contexts, we identify and suggest potential model enhancements to make the LUCI model more applicable to the VMD as well as other tropical deltaic regions. LUCI generated informative results in much of the VMD for the selected ES (flood mitigation, agriculture/aquaculture productivity, and climate regulation), but challenges arose around its application to a new agro-hydrological regime. To address these challenges, parameterising LUCI and reconceptualising some of the model’s mechanisms to specifically account for the productivity and flood mitigation capability of water-tolerant crops as well as flooding processes of deltaic regions will improve future ES modelling in tropical deltaic areas. The ES maps showed the spatial heterogeneity of ES across the VMD. Next, to at least somewhat account for the economic drivers which need to be considered alongside biophysical valuations for practical implementations of ES maps for nature-based solutions (Nbs) in the upstream VMD, economic values were assigned to different parcels using a benefit transfer approach. The spatially explicit ES economic value maps can inform the design of financing incentives for Nbs. The results and related work can be used to support the establishment of Nbs that ultimately contribute to the security of local farmers’ livelihoods and the sustainability of the VMD.

2017 ◽  
Vol 74 (11) ◽  
pp. 1732-1748 ◽  
Author(s):  
Rebecca R. Miller ◽  
John C. Field ◽  
Jarrod A. Santora ◽  
Melissa H. Monk ◽  
Rosemary Kosaka ◽  
...  

Quantifying spatiotemporal dynamics of ecosystem services is an emerging approach for informing and managing trade-offs among cumulative or competing activities in marine environments. As one proxy for ecosystem services and benefits, we quantified and mapped catch and economic value of California commercial fisheries removals using a 75-year spatially explicit time series. From 1931 to 2005, approximately 88% of the catch was attributed to finfish. However, there has been an increasing reliance of proportional value from invertebrates over the last 25 years. The spatial organization of historical catches suggests species composition varies substantially by depth and latitude, and an evaluation of changes in the spatial distribution of catches in three different time periods suggests that spatial shifts in catch locations have occurred for some taxonomic groups over time. A spatial assessment of historical catches and value benefits marine spatial planning, informs stock assessments, provides a quantification of ecosystem services, and facilitates ecosystem-based approaches to marine fisheries management.


2019 ◽  
Vol 50 (6) ◽  
pp. 1679-1709 ◽  
Author(s):  
Min Fan ◽  
Daniel Ocloo Mawuko ◽  
Hideaki Shibata ◽  
Wei Ou

Abstract Water resources prioritization conservation planners are increasingly becoming aware of the economic value of water supply ecosystem services (ESs) under climate changes. Here we assessed how the water yield ES framework is implemented in the current spatial prioritization conservation of the water resources under climate change across the Teshio River watershed. We applied the systematic conservation model to optimize the area for water resources which satisfied the protection targets with and without considering economic values of the water yield provision service. The model indicated that the areas of spatial optimal ES protection for water yield with considering economic values were totally different from those without considering economic values of water resources. The optimal priority conservation areas were concentrated in southwestern, southeastern, and some northern areas of this watershed. These places could guarantee water resources sustainability from both environmental protection and socio-economic development standpoints. Moreover, the spatial priority conservation areas for water yield with economic value from hydro-power electricity production were traded off against the areas for water yield with economic values from resident water-use and irrigation for rice. Therefore, the systematic conservation planning of water yield with economic values under climate changes may provide a useful argument to promote the conservation of water resources.


Author(s):  
Ahmed Karmaoui

The oasean rangelands surrounding and the scattered steppic area, is commonly viewed as degraded landscapes. The dynamics of oasean ecosystems is indeed affected by human and climatic disturbances and stresses which induce desertification processes. In this context, the objectives of this research are to identify and quantify ecosystem services as a tool for measuring changes in arid lands. Monetization has enabled a more complete diagnosis of ecosystems and their ecosystem services. In this paper, we examine the economic value of the regulating and cultural ecosystem services provided by the oases of Middle Draa Valley (MDV), which is part of Biosphere Reserve of southern Moroccan Oasis (UNESCO). The economic values are standardized to US$ per hectare per year (2008-2010 period prices). The total value of regulating services is found to be 2478,9 US$/ha/year for the arable area (26000ha) and 43,14 US$/ha/year for the whole Middle Draa Valley (1500 000ha). The economic value of the cultural services in the arable area is 1776,8 US$/ha/year and 30,83US$/ha/year for the total area.


Land ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 379
Author(s):  
Hongmi Koo ◽  
Janina Kleemann ◽  
Christine Fürst

In West Africa, where the majority of the population relies on natural resources and rain-fed agriculture, regionally adapted agricultural land-use planning is increasingly important to cope with growing demand for land-use products and intensifying climate variability. As an approach to identify effective future land-use strategies, this study applied spatially explicit modeling that addresses the spatial connectivity between the provision of ecosystem services and agricultural land-use systems. Considering that the status of ecosystem services varies with the perception of stakeholders, local knowledge, and characteristics of a case study area, two adjoining districts in northern Ghana were integrated into an assessment process of land-use strategies. Based on agricultural land-management options that were identified together with the local stakeholders, 75 future land-use strategies as combinations of multiple agricultural practices were elaborated. Potential impacts of the developed land-use strategies on ecosystem services and land-use patterns were assessed in a modeling platform that combines Geographic Information System (GIS) and Cellular Automaton (CA) modules. Modeled results were used to identify best land-use strategies that could deliver multiple ecosystem services most effectively. Then, local perception was applied to determine the feasibility of the best land-use strategies in practice. The results presented the different extent of trade-offs and synergies between ecosystem services delivered by future land-use strategies and their different feasibility depending on the district. Apart from the fact that findings were context-specific and scale-dependent, this study revealed that the integration of different local characteristics and local perceptions to spatially explicit ecosystem service assessment is beneficial for determining locally tailored recommendations for future agricultural land-use planning.


2020 ◽  
Vol 6 (5) ◽  
pp. eaax7712 ◽  
Author(s):  
Carola Paul ◽  
Nick Hanley ◽  
Sebastian T. Meyer ◽  
Christine Fürst ◽  
Wolfgang W. Weisser ◽  
...  

Biodiversity’s contribution to human welfare has become a key argument for maintaining and enhancing biodiversity in managed ecosystems. The functional relationship between biodiversity (b) and economic value (V) is, however, insufficiently understood, despite the premise of a positive-concave bV relationship that dominates scientific and political arenas. Here, we review how individual links between biodiversity, ecosystem functions (F), and services affect resulting bV relationships. Our findings show that bV relationships are more variable, also taking negative-concave/convex or strictly concave and convex forms. This functional form is driven not only by the underlying bF relationship but also by the number and type of ecosystem services and their potential trade-offs considered, the effects of inputs, and the type of utility function used to represent human preferences. Explicitly accounting for these aspects will enhance the substance and coverage of future valuation studies and allow more nuanced conclusions, particularly for managed ecosystems.


2020 ◽  
Author(s):  
Srikanta Sannigrahi ◽  
Bidroha Basu ◽  
Arunima Sarkar Basu ◽  
Francesco Pilla

<p>Nature-based solutions (NBS) are the bundle of natural and ecological functions that are proven to be beneficial to address varied socio-ecological challenges at cities. The conceptual adaptation of NBS alternatives in managing leading issues such as climate change and its impact on community well-being, sustainable uses of natural resources, encouragement for using soft engineering approaches for nourishing synergic benefits of natural capitals, empowering population health and reducing disaster risk are increasing substantially over the past few decades. The other term Ecosystem Services (ESs) refers to the variety of supports and benefits that humans obtained from the natural environment, which add human well-fare and improve the overall socio-ecological status at cities. NBS alternatives include increase in green areas by urban forestry and plantation, preserving urban inland water bodies and wetlands, introducing sustainable, cost-efficient, and environment-friendly urban drainage and sewage systems, reducing the impervious surface cover by increasing green cover, etc. However, substantial evidence is required to understand the importance of NBS alternatives and its implication in producing various regulatory, provisioning, supporting, and cultural urban ecosystem services that collectively produce ranges of economic, social, and environmental supports and benefits. This study performs a thorough quantitative and qualitative assessment to explore the possibilities of adopting varied NBS alternatives to reduce environmental problems in a city and to quantify the economic values of different NBS alternatives using spatially explicit biophysical and economic valuation approaches. Two spatially explicit integrated models Integrated Valuation of Ecosystem Services and Trade-off (InVEST) and Soil Water Assessment Tool (SWAT) was used to quantify the biophysical and economic values of different NBS alternatives and ESs in Dublin, Ireland. The outcome of the study could be a reference to the concerned stakeholders, decision-makers, urban planners, and land administrators for adopting suitable NBS alternatives in managing the uprising environmental and socioecological issues in a city region.</p>


2020 ◽  
Vol 12 (11) ◽  
pp. 4762
Author(s):  
Xiufen Li ◽  
Yichen Tian ◽  
Tian Gao ◽  
Lei Jin ◽  
Shuangtian Li ◽  
...  

The effects of forest restoration on ecosystem services and their trade-offs are increasingly discussed by environmental managers and ecologists, but few demonstrations have analyzed ecosystem service trade-offs with a view to informing afforestation choices. Here, we examined how the Grain for Green Program (GGP), an ambitious reforestation program in China, affected ecosystem services. We quantified regulating services and provisioning service in the potential scenarios, which were developed to improve ecosystem services better. The results indicated the GGP drove 14.5% of land-use/land-cover from 2000 to 2015, and all the regulating services increased. Prioritizing reforestations in steep-sloped and riparian farmlands can promote flood mitigation, water purification, and soil retention services by 62.7%, 25.5%, and 216.1% as compared with 2015 levels, respectively, suggesting that the improvements strongly depend on afforestation locations. Driven by the new GGP policy, a high proportion of economic forest increased provisioning service (272.2%), but at the expense of decreases in soil retention (−25.1%), flood mitigation (−11.4%), water purification (−36.6%), and carbon storage (−48.5%). We identified a suitable scenario that would reduce the trade-offs, which associated with afforestation types and their spatial allocation. Identifying priority areas of afforestation types can inform the GGP policy to assure sustainable and broader benefits.


2021 ◽  
Author(s):  
RODGERS MAKWINJA ◽  
Seyoum Mengistou ◽  
Emmanuel Kaunda ◽  
Tena Alemiew ◽  
Friday Njaya

Abstract Lake Malombe is endowed with a variety of ecosystem services (ES) that have a considerable economic value. This study used, a combination of market-based and value transfer techniques to evaluate the lake ES. The results showed that the annual economic value of Lake Malombe ES is estimated at US$ 40.68million, equivalent to US$635.63/hh/yr. The ecosystem provisioning service (EPS) is ranked the highest (87.45%) in terms of contribution, followed by biodiversity (8.64%), flood regulation (3.70%) then carbon sequestration, culture, and aesthetic services. The ES quality index ranks culture and aesthetic services as the lowest suggesting that investment in the tourism industry in Lake Malombe is not much advanced. Although this study did not take into account all ES components such as non-use values and other regulatory services, the estimated total annual ES value of US$ 40.68million derived from Lake Malombe provides a strong basis for a need to design an economic incentive model to encourage the local communities to take responsibility for managing the lake. Any decline in the supply of ES can eventually worsen poverty and push the local population to desperately over depend on EPS and degrade even the areas deemed to be conserved for future generations thereby creating a vicious circle of poverty and ecosystem disservices. This study provides a significant insight into the trade-offs between ES and diverse stakeholders. Balancing the interest of local communities given the importance of EPS in sustaining their livelihoods and that of global communities is required to effectively manage the lake.


2006 ◽  
Vol 73 ◽  
pp. 109-119 ◽  
Author(s):  
Chris Stockdale ◽  
Michael Bruno ◽  
Helder Ferreira ◽  
Elisa Garcia-Wilson ◽  
Nicola Wiechens ◽  
...  

In the 30 years since the discovery of the nucleosome, our picture of it has come into sharp focus. The recent high-resolution structures have provided a wealth of insight into the function of the nucleosome, but they are inherently static. Our current knowledge of how nucleosomes can be reconfigured dynamically is at a much earlier stage. Here, recent advances in the understanding of chromatin structure and dynamics are highlighted. The ways in which different modes of nucleosome reconfiguration are likely to influence each other are discussed, and some of the factors likely to regulate the dynamic properties of nucleosomes are considered.


2019 ◽  
Vol 11 (4) ◽  
pp. 1235-1249 ◽  
Author(s):  
A. Mentzafou ◽  
A. Conides ◽  
E. Dimitriou

Abstract Coastal ecosystems are linked to socio-economic development, but simultaneously, are particularly vulnerable to anthropogenic climate change and sea level rise (SLR). Within this scope, detailed topographic data resources of Spercheios River and Maliakos Gulf coastal area in Greece, combined with information concerning the economic value of the most important sectors of the area (wetland services, land property, infrastructure, income) were employed, so as to examine the impacts of three SLR scenarios, compiled based on the most recent regional projections reviewed. Based on the results, in the case of 0.3 m, 0.6 m and 1.0 m SLR, the terrestrial zone to be lost was estimated to be 6.2 km2, 18.9 km2 and 31.1 km2, respectively. For each scenario examined, wetlands comprise 68%, 41% and 39% of the total area lost, respectively, reflecting their sensitivity to even small SLR. The total economic impact of SLR was estimated to be 75.4 × 106 €, 161.7 × 106 € and 510.7 × 106 € for each scenario, respectively (3.5%, 7.5% and 23.7% of the gross domestic product of the area), 19%, 17% and 8% of which can be attributed to wetland loss. The consequences of SLR to the ecosystem services provided are indisputable, while adaptation and mitigation planning is required.


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