Results 21 to 30 of about 4,888,453 (287)

Spatial ecology of territorial populations [PDF]

open access: yesProceedings of the National Academy of Sciences, 2019
Many ecosystems, from vegetation to biofilms, are composed of territorial populations that compete for both nutrients and physical space. What are the implications of such spatial organization for biodiversity? To address this question, we developed and analyzed a model of territorial resource competition.
Weiner, Benjamin G.   +2 more
openaire   +2 more sources

Spatial structure of city population growth

open access: yesNature Communications, 2022
AbstractWe show here that population growth, resolved at the county level, is spatially heterogeneous both among and within the U.S. metropolitan statistical areas. Our analysis of data for over 3,100 U.S. counties reveals that annual population flows, resulting from domestic migration during the 2015–2019 period, are much larger than natural ...
Sandro M. Reia   +3 more
openaire   +5 more sources

Spatial Dimensions of Population Viability [PDF]

open access: yes, 2004
In most parts of the world, habitat loss is the number one threat to endangered species. For instance, in Finland the primary cause of threat is some form of habitat loss or alteration in 73% of the red-listed species (Rassi et al. 2001). Typically, a reduced total area of habitat is accompanied by habitat fragmentation, such that the remaining habitat
Gyllenberg, M., Hanski, I., Metz, J.A.J.
openaire   +3 more sources

Population-Economy Coupling and Its Effect on Topographic Gradients in Anhui Province, China Based on a Grid Scale

open access: yesRedai dili, 2021
With the acceleration of urbanization, the relationship between an area's population and its economy has become the main indicator of regional differences.
He Shasha, Fang Bin
doaj   +1 more source

Disaggregating County-Level Census Data for Population Mapping Using Residential Geo-Objects With Multisource Geo-Spatial Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Accurate spatialization of socioeconomic data is conducive to understand the spatial and temporal distribution of human social development status and, thus, effectively support future scientific decision-making.
Tianjun Wu   +7 more
doaj   +1 more source

Spatial Distribution and Characteristics of Population in the Guangdong-Hong Kong- Macao Greater Bay Area Based on Night-Light Remote Sensing

open access: yesRedai dili, 2023
The Guangdong-Hong Kong-Macao Greater Bay Area (GBA) is one of the most open regions in China, with the strongest economic vitality and fastest population growth, playing an important role in China's development strategy.
Li Shanshan, Lin Wentan
doaj   +1 more source

Spatiotemporal dynamics of population density in China using nighttime light and geographic weighted regression method*

open access: yesInternational Journal of Digital Earth, 2023
The distribution and dynamic changes of regional or national population data with long time series are very important for regional planning, resource allocation, government decision-making, disaster assessment, ecological protection, and other ...
Wei Guo   +7 more
doaj   +1 more source

Remote Sensing and Social Sensing Data Fusion for Fine-Resolution Population Mapping With a Multimodel Neural Network

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
Mapping population distribution at fine spatial scales is significant and fundamental for resource utilization, assessment of city disaster, environmental regulation, and urbanization.
Luxiao Cheng   +3 more
doaj   +1 more source

Spatial Clustering for Inhomogeneous Populations

open access: yesJournal of the Royal Statistical Society Series B: Statistical Methodology, 1990
SUMMARY A new method for detecting spatial clustering of events in populations with non-uniform density is proposed. The method is based on selecting controls from the population at risk and computing interpoint distances for the combined sample. Nonparametric tests are developed which are based on the number of cases among the k nearest
Cuzick, Jack, Edwards, Robert
openaire   +2 more sources

Identification and Classification of Urban Shrinkage in Northeast China

open access: yesLand, 2023
The phenomenon of shrinking cities is a significant challenge faced by many cities today. To more accurately identify the leading factors driving urban shrinkage and develop rational recommendations, precise identification and classification of urban ...
Xiaosong Ma   +4 more
doaj   +1 more source

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