scholarly journals Satellites to Sprinklers: Assessing the Role of Climate and Land Cover Change on Patterns of Urban Outdoor Water Use

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Kyle Blount ◽  
Jordyn M. Wolfand ◽  
Colin D. Bell ◽  
Newsha K. Ajami ◽  
Terri S. Hogue
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
Water Use ◽  
Outdoor Water Use

scholarly journals Land cover change in low-warming scenarios may enhance the climate role of secondary organic aerosols

2021 ◽  
Author(s):  
Marianne T. Lund ◽  
Alexandru Rap ◽  
Gunnar Myhre ◽  
Amund S. Haslerud ◽  
Bjørn H. Samset
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
Secondary Organic Aerosols ◽  
Organic Aerosols

scholarly journals Accelerating land cover change in West Africa over four decades as population pressure increased

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Stefanie M. Herrmann ◽  
Martin Brandt ◽  
Kjeld Rasmussen ◽  
Rasmus Fensholt
Keyword(s):  
Land Cover ◽  
West Africa ◽  
Land Cover Change ◽  
Regional Scale ◽  
Population Pressure ◽  
Human Footprint ◽  
Long Time ◽  
Quantitative Analyses ◽  
Change Intensity

AbstractRapid population growth in West Africa has exerted increasing pressures on land resources, leading to observable changes in the land cover and land use. However, spatially explicit and thematically detailed quantitative analyses of land cover change over long time periods and at regional scale have been lacking. Here we present a change intensity analysis of a Landsat-based, visually interpreted, multi-date (1975, 2000, 2013) land cover dataset of West Africa, stratified into five bioclimatic sub-regions. Change intensities accelerated over time and increased from the arid to the sub-humid sub-regions, as did population densities. The area occupied by human-dominated land cover categories more than doubled from 493,000 km2 in 1975 to 1,121,000 km2 in 2013. Land cover change intensities within 10 km of new settlement locations exceeded the region-wide average by up to a factor of three, substantiating the significant role of population pressure as a force of change. The spatial patterns of the human footprint in West Africa, however, suggest that not only population pressure but also changing socioeconomic conditions and policies shape the complexity of land cover outcomes.

scholarly journals Monitoring Effects of Land Cover Change on Biophysical Drivers in Rangelands Using Albedo

Land ◽  
2019 ◽  
Vol 8 (2) ◽  
pp. 33 ◽  
Author(s):  
Zahn Münch ◽  
Lesley Gibson ◽  
Anthony Palmer
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
Carbon Storage ◽  
Water Use ◽  
Satellite Data ◽  
Management Practices ◽  
Net Primary Production ◽  
Seasonal Effects ◽  
Positive Trend ◽  
Normalised Difference Vegetation Index

This paper explores the relationship between land cover change and albedo, recognized as a regulating ecosystems service. Trends and relationships between land cover change and surface albedo were quantified to characterise catchment water and carbon fluxes, through respectively evapotranspiration (ET) and net primary production (NPP). Moderate resolution imaging spectroradiometer (MODIS) and Landsat satellite data were used to describe trends at catchment and land cover change trajectory level. Peak season albedo was computed to reduce seasonal effects. Different trends were found depending on catchment land management practices, and satellite data used. Although not statistically significant, albedo, NPP, ET and normalised difference vegetation index (NDVI) were all correlated with rainfall. In both catchments, NPP, ET and NDVI showed a weak negative trend, while albedo showed a weak positive trend. Modelled land cover change was used to calculate future carbon storage and water use, with a decrease in catchment carbon storage and water use computed. Grassland, a dominant dormant land cover class, was targeted for land cover change by woody encroachment and afforestation, causing a decrease in albedo, while urbanisation and cultivation caused an increase in albedo. Land cover map error of fragmented transition classes and the mixed pixel effect, affected results, suggesting use of higher-resolution imagery for NPP and ET and albedo as a proxy for land cover.

scholarly journals Hydrological impacts of global land cover change and human water use

2017 ◽  
Vol 21 (11) ◽  
pp. 5603-5626 ◽  
Author(s):  
Joyce H. C. Bosmans ◽  
Ludovicus P. H. van Beek ◽  
Edwin H. Sutanudjaja ◽  
Marc F. P. Bierkens
Keyword(s):  
Water Resources ◽  
Land Cover ◽  
Land Cover Change ◽  
Water Use ◽  
Hydrological Cycle ◽  
Human Impacts ◽  
Anthropogenic Impacts ◽  
Climatic Zones ◽  
Water Abstraction ◽  
The Impact

Abstract. Human impacts on global terrestrial hydrology have been accelerating during the 20th century. These human impacts include the effects of reservoir building and human water use, as well as land cover change. To date, many global studies have focussed on human water use, but only a few focus on or include the impact of land cover change. Here we use PCR-GLOBWB, a combined global hydrological and water resources model, to assess the impacts of land cover change as well as human water use globally in different climatic zones. Our results show that land cover change has a strong effect on the global hydrological cycle, on the same order of magnitude as the effect of human water use (applying irrigation, abstracting water, for industrial use for example, including reservoirs, etc.). When globally averaged, changing the land cover from that of 1850 to that of 2000 increases discharge through reduced evapotranspiration. The effect of land cover change shows large spatial variability in magnitude and sign of change depending on, for example, the specific land cover change and climate zone. Overall, land cover effects on evapotranspiration are largest for the transition of tall natural vegetation to crops in energy-limited equatorial and warm temperate regions. In contrast, the inclusion of irrigation, water abstraction and reservoirs reduces global discharge through enhanced evaporation over irrigated areas and reservoirs as well as through water consumption. Hence, in some areas land cover change and water distribution both reduce discharge, while in other areas the effects may partly cancel out. The relative importance of both types of impacts varies spatially across climatic zones. From this study we conclude that land cover change needs to be considered when studying anthropogenic impacts on water resources.

scholarly journals The role of biospheric feedbacks in the simulation of the impact of historical land cover change on the Australian January climate

2003 ◽  
Vol 30 (22) ◽  
Author(s):  
G. T. Narisma ◽  
A. J. Pitman ◽  
J. Eastman ◽  
I. G. Watterson ◽  
R. Pielke ◽  
...  
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
The Impact

Modelling the risk of land cover change from environmental and socio-economic drivers in heterogeneous and changing landscapes: The role of uncertainty

2011 ◽  
Vol 101 (2) ◽  
pp. 108-119 ◽  
Author(s):  
Jose-Manuel Álvarez Martínez ◽  
Susana Suárez-Seoane ◽  
Estanislao De Luis Calabuig
Keyword(s):  
Land Cover ◽  
Land Cover Change

Land cover change 2002–2005 in Borneo and the role of fire derived from MODIS imagery

2007 ◽  
Vol 13 (11) ◽  
pp. 2329-2340 ◽  
Author(s):  
ANDREAS LANGNER ◽  
JUKKA MIETTINEN ◽  
FLORIAN SIEGERT
Keyword(s):  
Land Cover ◽  
Land Cover Change ◽  
Modis Imagery
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