| 1. |
- Chen, Shouzhi, et al.
(författare)
-
Vegetation phenology and its ecohydrological implications from individual to global scales
- 2022
-
Ingår i: Geography and Sustainability. - : Elsevier BV. - 2096-7438 .- 2666-6839. ; 3:4, s. 334-338
-
Tidskriftsartikel (refereegranskat)abstract
- The Earth is experiencing unprecedented climate change. Vegetation phenology has already showed strong response to the global warming, which alters mass and energy fluxes on terrestrial ecosystems. With technology and method developments in remote sensing, computer science and citizen science, many recent phenology-related studies have been focused on macrophenology. In this perspective, we 1) reviewed the responses of vegetation phenology to climate change and its impacts on carbon cycling, and reported that the effect of shifted phenology on the terrestrial carbon fluxes is substantially different between spring and autumn; 2) elaborated how vegetation phenology affects ecohydrological processes at different scales, and further listed the key issues for each scale, i.e., focusing on seasonal effect, local feedbacks and regional vapor transport for individual, watershed and global respectively); 3) envisioned the potentials to improve current hydrological models by coupling vegetation phenology-related processes, in combining with machine learning, deep learning and scale transformation methods. We propose that comprehensive understanding of climate-macrophenology-hydrology interactions are essential and urgently needed for enhancing our understanding of the ecosystem response and its role in hydrological cycle under future climate change.
|
|
| 2. |
- Ferreira, Carla S. S., 1982-, et al.
(författare)
-
Groundwater quality in the vicinity of a dumpsite in Lagos metropolis, Nigeria
- 2023
-
Ingår i: Geography and Sustainability. - : Elsevier BV. - 2096-7438 .- 2666-6839. ; 4:4, s. 379-390
-
Tidskriftsartikel (refereegranskat)abstract
- Inappropriate management of municipal solid waste dumpsites is a major cause of groundwater contamination in developing countries, but the extent of the problem is not known. This study investigated groundwater quality in the vicinity of Olusosun dumpsite in Lagos, Nigeria, the most populous city in sub-Saharan Africa. During 2020, monthly groundwater samples were collected in 17 wells and boreholes used as drinking water sources, and analysed for 20 physico-chemical parameters. Differences between sites and seasons were statistically assessed, together with changes in water quality index (WQI). The results indicated that heavy metals (Pb2+, Ni+, Mn2+, Fe2+, Cr6+), cations (Ca2+, Mg2+, K+), total hardness and pH were the main parameters impairing water quality. Drinking water quality standards from both the World Health Organization and Nigeria government were exceeded more often in the wet season than in the dry season. Some groundwater properties were negatively correlated with distance to dumpsite (e.g., Fe2+, Pb2+, NO3−). Significant differences between sites were identified, but with no clear spatial trend. WQI varied from excellent (6%–24% of the sites over the study period) to unsuitable for drinking water purposes (12%–18%), with good quality prevailing at most sites (35%–47%). Although groundwater quality declined at 24% of the sites over 2020, the results indicated improvements compared with previous decades. Remediation strategies must be implemented to safeguard public health and the sustainability of water resources.
|
|
| 3. |
- Pinto, Luís Valença, et al.
(författare)
-
Urban green spaces accessibility in two European cities : Vilnius (Lithuania) and Coimbra (Portugal)
- 2022
-
Ingår i: Geography and Sustainability. - : Elsevier BV. - 2096-7438 .- 2666-6839. ; 3:1, s. 74-84
-
Tidskriftsartikel (refereegranskat)abstract
- Urban green spaces (UGS) are essential for human well-being, contributing towards quality of life and promoting social interactions and inclusion. Accessibility to recreational UGS is key to human well-being in urban areas. However, there is a lack of works focused on recreational UGS accessibility in cities from different countries, using different types of transport. In this work, we studied the accessibility to recreational UGS in Vilnius (Lithuania) and Coimbra (Portugal) through four transport modes (foot, bike, bus and car) within 5- and 10-minute distance. The results showed important differences between cities. Vilnius had higher accessibility to recreational UGS than Coimbra in all transport modes. In both cities, the accessibility was highest by car and lowest by bus. Also, the percentage of population covered by 5- and 10-minute distance UGS accessibility in Vilnius is higher than in Coimbra, despite the lower population density in Vilnius. A large number of recreational UGS, their geographic distribution, the dispersed population pattern, and the location of several urbanizations near recreational UGS increased the inhabitant’s accessibility to recreational UGS in Vilnius. The differences in accessibility between cities were mainly attributed to the large number of recreational UGS and higher road network density, cycleways and footways density, and bus lines in Vilnius, compared to Coimbra. This work identified the areas where recreational UGS accessibility is difficult in using different transport modes and need to be improved in study areas. This is essential to support urban planners and increase cities’ well-being. The findings of this work will be important for the management of the studied urban areas.
|
|
| 4. |
- Zhang, Chi, et al.
(författare)
-
Five tips for China to realize its co-targets of climate mitigation and Sustainable Development Goals (SDGs)
- 2020
-
Ingår i: Geography and Sustainability. - : Elsevier BV. - 2096-7438 .- 2666-6839. ; 1:3, s. 245-249
-
Tidskriftsartikel (refereegranskat)abstract
- In 2018, a total of US$166 billion global economic losses and a new high of 55.3 Gt of CO2 equivalent emission were generated by 831 climate-related extreme events. As the world's largest CO2 emitter, we reported China's recent progresses and pitfalls in climate actions to achieve climate mitigation targets (i.e., limit warming to 1.52 degrees C above the pre-industrial level). We first summarized China's integrated actions (2015 onwards) that benefit both climate change mitigation and Sustainable Development Goals (SDGs). These projects include re-structuring organizations, establishing working goals and actions, amending laws and regulations at national level, as well as increasing social awareness at community level. We then pointed out the shortcomings in different regions and sectors. Based on these analyses, we proposed five recommendations to help China improving its climate policy strategies, which include: 1) restructuring the economy to balance short-term and long-term conflicts; 2) developing circular economy with recycling mechanism and infrastructure; 3) building up unified national standards and more accurate indicators; 4) completing market mechanism for green economy and encouraging green consumption; and 5) enhancing technology innovations and local incentives via bottom-up actions.
|
|
| 5. |
- Nesterova, Iana
(författare)
-
Business of deep transformations : How can geography contribute to the understanding of degrowth business?
- 2022
-
Ingår i: Geography and Sustainability. - : Elsevier. - 2666-6839. ; 3:2, s. 105-113
-
Tidskriftsartikel (refereegranskat)abstract
- There is currently considerable interest in what degrowth compatible business practices may be and what they may look like. However, while the embeddedness of a degrowth business in the wider environment has been recognised, and this affects theorising of practices and principles, there remains a need to seriously consider the inter-connection between degrowth business and its surrounding environment as a physical and cultural space. To avoid merely hinting at geographical concepts such as space, place, and location, a better approach is establishing a dialogue between degrowth business and geography. To do this, I use the degrowth business framework and connect its elements with the concepts of space, place, and location. This analysis shows that each of the elements is intimately inter-related with geographical concepts and needs to be thought of, theorised, and implemented as such. I conclude that geographical concepts should not be merely implied when theorising degrowth business. Rather, looking at degrowth business through various lenses provided by geographies is indispensable for making degrowth reality in diverse locations.
|
|
