搜索结果: 1-15 共查到“理学 spatial variation”相关记录16条 . 查询时间(0.122 秒)
Spatial Variation and Tradeoffs in Species Interactions
Selection mosaic resource allocation tradeoff
2015/1/4
The geographic mosaic theory of coevolution predicts that spatial differences in species interactions result in a patchwork of evolutionary hot and cold spots across a landscape. We used horsenettle (...
Assessing the drivers of spatial variation in thermal forcing across a nearshore reef system and implications for coral bleaching
Assessing the drivers spatial variation thermal forcing across a nearshore reef system implications coral bleaching
2014/7/10
We examined the seasonal and spatial variability in the temperatures of nearshore reef waters over 19 months across Coral Bay at Ningaloo Reef, Western Australia. Local deviations in the mean daily te...
Method of Soil Erosion Intensity Spatial Variation Research
Gas Insulation Switchgear (GIS) Luoning County RS Soil Erosion Intensity
2011/12/21
This paper collected attribute data of impacting soil erosion factors by RS and GIS, combined soil erosion model, got load and density of soil erosion in Luoning county, Henan province, and analyzed r...
Tempo-spatial variation of emission inventories of speciated volatile organic compounds from on-road vehicles in China
Tempo-spatial variation speciated volatile organic compounds on-road vehicles China
2009/9/23
Emission inventories of sixty-seven speciated non-methane volatile organic compounds (NMVOC) from on-road vehicles in China were estimated for the period of 1980–2005, using seven NMVOC emission profi...
Spatial variation of aerosol properties over Europe derived from satellite observations and comparison with model calculations
aerosol properties Europe satellite observations model calculations
2009/3/10
Aerosol optical depths (AOD) and Angström coefficients over Europe were retrieved using data from the ATSR-2 radiometer on board the ESA satellite ERS-2, for August 1997. Taking advantage of the ...
Analysis of the spatial variation in the parameters of the SWAT model with application in Flanders, Northern Belgium
hydrological regionalisation
2009/3/6
Operational applications of a hydrological model often require the prediction of stream flow in (future) time periods without stream flow observations or in ungauged catchments. Data for a case-specif...
Spatial variation in particle number size distributions in a large metropolitan area
spatial variation distributions metropolitan area
2008/10/31
Air quality studies have indicated that particle number size distribution (NSD) is unevenly spread in urban air. To date, these studies have focussed on differences in concentration levels between sam...
Hurricane Directional Wave Spectrum Spatial Variation at Landfall
Hurricane Directional Wave Spectrum Spatial Variation Landfall
2008/6/9
The NASA Scanning Radar Altimeter (SRA) flew aboard one of the NOAA WP-3D hurricane research aircraft to document the sea surface directional wave spectrum in the region between Charleston, South Caro...
Hydrodynamic forces and surface topography: Centimeter-scale spatial variation in wave forces
Hydrodynamic forces surface topography Centimeter-scale spatial variation wave forces
2014/4/21
We measured the variability in hydrodynamic forces among locations separated by only centimeters along three horizontal transects on a steep rocky shore. Our results extend previous work showing that ...
Sampling and testing are conducted on groundwater depth and vegetation coverage in the 670 km2 of the Sangong River Basin and semi-variance function analysis is made afterwards on the data...
Spatial variation in N2-fixation rate and diazotroph activity in the Tropical Atlantic
Spatial variation N2-fixation rate diazotroph activity Tropical Atlantic
2010/1/14
A variety of N2-fixers occur in oligotrophic waters and these diazotrophs make a substantial contribution to the nitrogen budget of the upper water column. A synthesis of previously published and new ...
Temporal and spatial variation of sulfide invasion in eelgrass (Zostera marina) as reflected by its sulfur isotopic composition
Temporal and spatial variation sulfide invasion in eelgrass sulfur isotopic composition
2014/5/5
Temporal and spatial variation of δ34S, total sulfur (TS) concentration, and elemental sulfur concentration (S0) in leaves, roots, and rhizomes of Zostera marina was followed between June 2002 and May...
Spatial variation of nitrogen fixation in lakes of the northern Great Plains
Spatial variation nitrogen fixation the northern Great Plains
2014/5/4
Cyanobacterial blooms are a regular feature of lakes in central North America, but little is known of their importance to the nitrogen (N) cycle and nutrition of aquatic food webs. We hypothesized tha...
Seasonal and spatial variation in the organic carbon and nitrogen concentration and their stable isotopic composition in Zostera marina (Denmark)
Seasonal and spatial variation organic carbon nitrogen concentration their stable isotopic composition Zostera marina
2014/5/9
The spatial and seasonal variation in the concentration and stable isotopic composition of carbon and nitrogen was studied in Zostera marina (eelgrass) meadows in Roskilde Fjord and Øresund, Denm...
Temporal and spatial variation in the d15N and d13C of coral tissue and zooxanthellae in Montastraea faveolata collected from the Florida reef tract
Temporal and spatial variation d15N and d13C coral tissue and zooxanthellae Montastraea faveolata collected Florida reef tract
2014/5/9
Tissues were collected from Montastraea faveolata at five locations on the Florida Reef tract representing both nearshore and offshore environments. The tissue and zooxanthellae were removed from the ...