scholarly journals Spatio-temporal evolution of water-related ecosystem services: Taihu Basin, China

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5041 ◽  
Author(s):  
Junyu Chen ◽  
Tao Cui ◽  
Huimin Wang ◽  
Gang Liu ◽  
Mat Gilfedder ◽  
...  

Water-related ecosystem services (WESs) arise from the interaction between water ecosystems and their surrounding terrestrial ecosystems. They are critical for human well-being as well as for the whole ecological circle. An urgent service-oriented reform for the utilization and supervision of WESs can assist in avoiding ecological risks and achieving a more sustainable development in the Taihu Basin, China (THB). Spatially distributed models allow the multiple impacts of land use/land cover conversion and climate variation on WESs to be estimated and visualized efficiently, and such models can form a useful component in the toolbox for integrated water ecosystem management. The Integrated Valuation of Ecosystem Services and Tradeoffs model is used here to evaluate and visualize the spatio-temporal evolution of WESs in the THB from 2000 to 2010. Results indicate that water retention service experienced a decline from 2000 to 2005 with a recovery after 2005, while there was ongoing water scarcity in urban areas. Both the water purification service and the soil retention service underwent a slight decrease over the study period. Nutrients export mainly came from developed land and cultivated land, with the hilly areas in the south of the THB forming the primary area for soil loss. The quantity and distribution of WESs were impacted significantly by the shrinkage of cultivated land and the expansion of developed land. These findings will lay a foundation for a service-oriented management of WESs in the THB and support evidence-based decision making.

Forests ◽  
2021 ◽  
Vol 12 (7) ◽  
pp. 813
Author(s):  
Hui Dang ◽  
Jing Li ◽  
Yumeng Zhang ◽  
Zixiang Zhou

Urban green spaces can provide many types of ecosystem services for residents. An imbalance in the pattern of green spaces leads to an inequality of the benefits of such spaces. Given the current situation of environmental problems and the basic geographical conditions of Xi’an City, this study evaluated and mapped four kinds of ecosystem services from the perspective of equity: biodiversity, carbon sequestration, air purification, and climate regulation. Regionalization with dynamically constrained agglomerative clustering and partitioning (REDCAP) was used to obtain the partition groups of ecosystem services. The results indicate that first, the complexity of the urban green space community is low, and the level of biodiversity needs to be improved. The dry deposition flux of particulate matter (PM2.5) decreases from north to south, and green spaces enhance the adsorption of PM2.5. Carbon sequestration in the south and east is higher than that in the north and west, respectively. The average surface temperature in green spaces is lower than that in other urban areas. Second, urban green space resources in the study area are unevenly distributed. Therefore, ecosystem services in different areas are inequitable. Finally, based on the regionalization of integrated ecosystem services, an ecosystem services cluster was developed. This included 913 grid spaces, 12 partitions, and 5 clusters, which can provide a reference for distinct levels of ecosystem services management. This can assist urban managers who can use these indicators of ecosystem service levels for planning and guiding the overall development pattern of green spaces. The benefits would be a maximization of the ecological functions of green spaces, an improvement of the sustainable development of the city, and an improvement of people’s well-being.


2021 ◽  
Author(s):  
Cristina Passet ◽  
Lan Wang-Erlandsson ◽  
Yoshihide Wada ◽  
Agnes Pranindita ◽  
Agatha De Boer

<div><span>A<strong> </strong>substantial portion of groundwater abstracted from aquifers is used for irrigation and evaporated to the atmosphere, potentially contributing towards downwind precipitation. While the fate of evaporation fluxes from land have been analysed, the atmospheric pathways of evaporation originating from groundwater have not yet been globally quantified. This study analysed the geographical distribution, the seasonality and the magnitude of groundwater-dependent precipitation (Pgw) </span><span>at a global scale and for a selection of countries and river basins. The Eulerian moisture tracking WAM-2layers model was used to process meteorological and groundwater abstraction input data from 1980 to 2010.  Results show considerable contributions of groundwater to precipitation downwind of the most heavily irrigated areas, leading to net groundwater losses over these areas. Globally, 40% of the Pgw </span><span>precipitates directly in the oceans, and do not contribute to biomass production in terrestrial ecosystems. Some of the countries with the highest rates of groundwater abstraction (India, the USA, Pakistan and Iran), receive low volumes of Pgw </span><span>and are net losers of groundwater resources. The countries with the highest net gain of groundwater are China, Canada and Russia. At river basin scale, the Indus, Ganges and Mississippi basins are net losers of groundwater to downwind Pgw</span><span>, while the Yangtze, Tarim and Brahmaputra basins receive more Pgw </span><span>than their groundwater withdrawals. The share of precipitation that originates from groundwater varies considerably with seasons, and can be especially high when low local precipitation levels occur in combination with high upwind groundwater abstraction. Furthermore, precipitation dependence on </span><span>groundwater (ρgw)</span><span>, has steadily increased between 1980 to 2010 in all studied areas and globally. Our study suggests that the countries and basins with a high and increasing dependency on ρgw </span><span>to support their precipitation can be vulnerable to groundwater availability upwind.</span></div>


2019 ◽  
Vol 681 ◽  
pp. 211-225 ◽  
Author(s):  
Yongxiu Sun ◽  
Shiliang Liu ◽  
Yuhong Dong ◽  
Yi An ◽  
Fangning Shi ◽  
...  

Proceedings ◽  
2019 ◽  
Vol 30 (1) ◽  
pp. 25
Author(s):  
Leitão ◽  
Ferreira ◽  
Ferreira

Land-use changes driven by human activities affect natural systems. Urbanization, forest monoculture and intensive agriculture are changing the functioning of many biotic and abiotic processes. This tends to decrease the ability of ecosystems to provide services, which leads to several problems particularly in cities. This study investigates the ability of urban areas with great population and environmental pressures, to supply ecosystem services. The study was carried out in Coimbra municipality, through the assessment of regulation, provisioning and cultural services. The quantification of ecosystem services was based on the evaluation performed by experts familiar with the study area, through questionnaires. A total of 31 questionnaires were completed. The experts ranked the potential supply of 30 ecosystem services for the 33 existent land-uses. based on a qualitative evaluation: “strong adverse potential”, “weak adverse potential”, “not relevant”, “low positive potential” and “strong positive potential”. The qualitative evaluation was converted into a quantitative classification (−2, −1, 0, 1, 2). The values were used to develop an ecosystem services quantification matrix and to map the information in the study area, using Geographic Information Systems (GIS). Despite the limited ecosystem services provided by urban areas, agricultural fields and especially green spaces are relevant for the provision of resources essential for human survival and well-being. The methodology used in this work is still useful for the quantification of ecosystem services in cities with characteristics associated with the Mediterranean climate. This type of studies are important to (i) anticipate problems originated from the loss of ecosystem services, (ii) identify good and bad practices of land use changes, (iii) the role of connectivity in maintaining biotic and abiotic processes, and (iv) develop practices that promote the sustainable development of societies.


2008 ◽  
Vol 22 (2) ◽  
pp. 103 ◽  
Author(s):  
Andrew J. Boulton ◽  
Graham D. Fenwick ◽  
Peter J. Hancock ◽  
Mark S. Harvey

Recent surveys of groundwater invertebrates (stygofauna) worldwide are yielding rich troves of biodiversity, with significant implications for invertebrate systematists and phylogeneticists as well as ecologists and groundwater managers. What is the ecological significance of this high biodiversity of invertebrates in some aquifers? How might it influence groundwater ecosystem services such as water purification or bioremediation? In terrestrial ecosystems, biodiversity is typically positively correlated with rates of ecosystem functions beneficial to humans (e.g. crop pollination). However, the links between biodiversity, ecosystem function, and ecosystem services in groundwater are unknown. In some aquifers, feeding, movement and excretion by diverse assemblages of stygofauna potentially enhance groundwater ecosystem services such as water purification, bioremediation and water infiltration. Further, as specific taxa apparently play ‘keystone’ roles in facilitating ecosystem services, declines in abundance or even their extinction have serious repercussions. One way to assess the functional significance of biodiversity is to identify ‘ecosystem service providers’, characterise their functional relationships, determine how service provision is affected by community structure and environmental variables, and measure the spatio-temporal scales over which these operate. Examples from Australian and New Zealand alluvial aquifers reveal knowledge gaps in understanding the functional importance of most stygofauna, hampering effective protection of currently undervalued groundwater ecosystem services.


Author(s):  
Bartosz Prokop ◽  
John Friesen

The reality of people’s lives has shifted from rural to urban areas, where an ever-increasing proportion of the world’s population lives. Providing infrastructure to serve these areas, especially in the Global South, is a key task of sustainable development. A deep understanding of the spatial arrangement and scales of these urban structures and their temporal evolution can help to develop innovative solutions to issues of energy, water, or transportation infrastructures. For this purpose, in this work we study the temporal evolution of urban built-up structures (Global Artificial Impervious Area) and population distributions (Global Human Settlement Population) in four regions of the Global South (Argentina, India, Egypt, and Nigeria). We qualitatively analyze regularity through the pair correlation function and subsequently identify typical scales within the different interurban systems. In doing so, we identify that especially the large settlement objects arrange themselves in a regular way and thus typical scales exist in urban systems. Thus, settlement objects are usually located about 20 to 40 km apart from each other. This information can be used to develop sustainable infrastructure concepts, for example for passenger transport between settlements.


Author(s):  
Andreja Tutundžić

The quality of life and human well-being is often perceived differently, dependable on individuals and groups, as well as within contrasting socio-political circumstances, varying from the many concepts such as respecting the living standard based primarily on income to the benefits that society receives from ecosystems. From the early beginnings as a professional discipline, landscape architecture has been respecting the quality of life and human well-being to a great extent, as a subject of professional interest and accordingly, through approaches used to address it. While those goals are mostly the same, the engagement in the scope and complexity of the discipline is significantly increasing over the years, but still targeting the traditional paradigm - to contribute to the improvement of the living conditions and quality of life. However, the majority of the projects are predominantly dealing with urban areas and the life of the urban population related to the upper- and middle-class social groups. Contrary to the above considerations, there is a layer of social groups of those who are forced to leave their homes in the times of crises, either caused by natural disasters, but even more of those seeking sanctuary due to the political turbulences and wars. The consequences of those tragic events can be found within different communities, including refugee camps or transitional settlements. Those places bring poor living conditions, lack of space, and numerous environmental problems, where even just the provisioning and supporting categories of ecosystem services are dependable on the input of external factors while regulating and cultural categories seems to be almost out of question. This paper describes the results of the “e-scape. Transitional settlement” Project, organized by the Department of Landscape Design and Ecosystem Management at American University in Beirut, in collaboration with the International Federation of Landscape Architecture. The goal of the project was to contribute to the improvement of the living conditions in the transitional settlements including the provision of even elementary ecosystem services in, at least, a bit greater extent. The additional intention was to broaden a methodology and guidelines of landscape architectural interventions within settlements resulting from conflict and natural disasters.


2021 ◽  
Vol 14 (Supl. 2) ◽  
pp. 1-15
Author(s):  
Maycon Jorge Ulisses Saraiva Farinha ◽  
André Geraldo Berezuk ◽  
Luciana Virginia Mario Bernardo

The process of urbanization is accomplished by changes in land use, that is, by the interaction between man and nature, so that there is a common loss of green areas in cities. However, the need and importance of green areas inside urban areas has been emphasized in order to provide quality to the provision of ecosystem services. Such services favor the quality of life and human well-being of people living in urban areas. Thus, nature-based solution practices have been encouraged as a form of innovation for urban planning and to overcome problems in cities. An integrative and bibliometric review on urban green areas and ecosystem service provision was proposed from 2009 to 2019. Among the results, there is a growing interest in the topic. There is recognition of the importance of green areas for population needs regarding human physical and mental health. In addition, the need for public actions in favor of urban planning involving the issue is recognized in order to provide equal access to existing areas and/or in areas that will be created.


2020 ◽  
Vol 16 (1) ◽  
pp. 41-47
Author(s):  
Kastytis Rudokas ◽  
Huriye Armagan Dogan ◽  
Odeta Viliūnienė ◽  
Jurga Vitkuvienė ◽  
Indrė Gražulevičiūtė-Vileniškė

Abstract For sustainable development, it is important to ensure healthy life and well-being for all ages, promote inclusive and sustainable economic growth, productive employment and decent work, take urgent action to combat climate change and its effects and protect, restore and promote sustainable use of terrestrial ecosystems. Taking into account the negative effects of climate change, the degrading effects of contemporary conventional industrial scale agricultural practices, the declining everyday physical activity of the working age people in developed countries, and other problems related to indoor work, this research proposes the office concept entitled FO-AM (Forest-Office Administrative (function) Movement) that allows to gradually move from sitting to walking while working in purposefully created or adapted forest areas. Numerous studies have been conducted on the positive effects of the natural environment on human health and productivity. A study published by Australian researchers revealed that sitting time is directly linked to all-cause mortality. While research results call for effective innovations for reducing the amount of time spent sitting and encouraging people, especially urban residents, to connect with nature, no effective holistic solutions have been found yet. The article presents a literature review on the contemporary office-nature space integration trends and the existing technical and design solutions and contemporary re-naturalization practices of ex-urban areas and presents the conceptual idea of landscape technology FO-AM allowing to transfer the functions of administrative buildings to the semi-natural and natural environment, including partially anthropogenic environment, park, forest park and natural forest, and in this way to address public health and well-being, economic innovation and climate change issues, thus contributing to the long-term sustainability goals.


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