CCL

Összesen 2 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM098770
035-os BibID:(cikkazonosító)7953 (WOS)000677124200001 (Scopus)85111080828
Első szerző:Benhizia, Ramzi
Cím:Monitoring the Spatiotemporal Evolution of the Green Dam in Djelfa Province, Algeria / Ramzi Benhizia, Yacine Kouba, György Szabó, Gábor Négyesi, Behnam Ata
Dátum:2021
ISSN:2071-1050
Megjegyzések:Green walls and green dams are increasingly being considered as part of many national and international desertification initiatives. This paper studies the spatiotemporal evolution of the green dam in the Moudjbara region (Djelfa Province, Algeria), from 1972 to 2019, by using Landsat imagery, Land Change Modeler, and OpenLand package. The future evolution of pine plantations, for the year 2029, was also forecasted, based on an anthropogenic scenario (i.e., anthropogenic pressure is the main driver of the green dam destruction). Our findings revealed that the green dam project was successful for a few years, but, after that, pine plantations deteriorated significantly, due to forest harvesting, livestock overgrazing, and the proliferation of the pine caterpillar processionary, which destroyed most of the reforestation. Land change modeler predicted a huge degradation of pine plantations for the year 2029, and if the deforestation continues at the same rate, the green dam in the Moudjbara region will disappear during the next few decades. Being aware of this threat, the Algerian authorities are now planning to reforest more than 1.2 million ha under the latest rural renewal policy, by introducing new principles related to sustainable development, fighting desertification, and climate change adaptation. We strongly recommend moving away from the singular tree planting focus, to diversifying desertification control methods.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Aleppo pine
desertification
green dam
green walls
land degradation
Megjelenés:Sustainability. - 13 : 14 (2021), p. 1-15. -
További szerzők:Kouba, Yacine Szabó György (1964-) (geográfus, egyetemi tanár) Négyesi Gábor (1980-) (geográfus) Ata Behnam (1991-) (Geográfus PhD hallgató)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM100975
035-os BibID:(cikkazonosító)329353 (Scopus)85127005304 (WOS)000774546500001
Első szerző:Heba Marey
Cím:Effects of Using Green Concrete Materials on the CO2 Emissions of the Residential Building Sector in Egypt / Heba Marey, Gábor Kozma, György Szabó
Dátum:2022
ISSN:2071-1050
Megjegyzések:Increasing the rate of construction material consumption has caused significant environmental problems in recent decades, especially the production of ordinary Portland cement (OPC), which has been associated with 8% of the world's human CO2 emissions and is considered the leading binder of concrete. This study aims to investigate the effects of substituting conventional concrete (CC) material with green concrete (GC) in the non-structural concrete works of a residential building in New Borg El-Arab City, Egypt. It attempts to establish what the effects are of using GC on cement, natural aggregates, and CO2 emissions in the design phase. By using a design-based solution (DBS), we began with redesign, reduce, reselect, reuse, and recycle strategies to find an optimal solution for applying recycle aggregate concrete (RAC) as a replacement material in selected building parts, such as the internal floor, external sidewalk, entrance steps, and wall boundary. AutoCAD software and 3Dmax were used to modify the original design and obtain two design references with four different scenarios. Comparative analyses were applied to investigate the effects of different concrete materials. The results show a reduction of about 19.4% in cement consumption in terms of the total concrete of the building and a 44.5% reduction in CO2 emissions due to the reduction of cement in specific building parts. In addition, this solution decreased natural coarse aggregate (NCA) consumption by 23.7% in the final concrete. This study recommends that GC materials close the loop of cementitious material consumption to reduce environmental impacts and achieve sustainability in the Egyptian building sector.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Sustainability. - 14 (2022), p. 1-22. -
További szerzők:Kozma Gábor (1966-) (geográfus) Szabó György (1964-) (geográfus, egyetemi tanár)
Pályázati támogatás:TKP2021-NKTA-32
Egyéb
Internet cím:Szerző által megadott URL
Intézményi repozitóriumban (DEA) tárolt változat
DOI
Borító:
Rekordok letöltése1