搜索结果: 1-15 共查到“理学 spatial patterns”相关记录16条 . 查询时间(0.122 秒)
Assessment of Spatial Patterns of Sediment Transport and Delivery for Soil and Water Conservation Programs
off-site soil erosion soil erosion deposition model
2015/8/14
Soil erosion has tremendous impacts on most river systems throughout the United States. Such non-point pollution results from land-use and agricultural practices and leads to sedimentation downstream,...
Assessment of Spatial Patterns of Sediment Transport and Delivery for Soil and Water Conservation Programs
off-site soil erosion soil erosion and deposition model sediment delivery Geographic Information System GIS
2015/1/8
Soil erosion has tremendous impacts on most river systems throughout the United States. Such non-point pollution results from land-use and agricultural practices and leads to sedimentation downstream,...
Environmental selection and resource allocation determine spatial patterns in picophytoplankton cell size
Environmental selection picophytoplankton cell
2014/4/2
Here we describe a new trait-based model for cellular resource allocation that we use to investigate the relative
importance of different drivers for small cell size in phytoplankton. Using the model...
Internalwavesandmixingin theepilimnionof a lake affects spatial patterns of zooplankton in a body-size dependent manner
stratifi cation, wind, plankton distribution
2014/4/1
Zooplankton are not uniformly distributed in space but are patchy at multiple scales as a result of
interactions between their directed motion and both large- and small-scale water currents. Using &#...
Spatial Patterns of Lightning-Ignited Forest Fires in Daxing’an Mountains, Heilongjiang Province, China, 1973-1997
Daxing'an Mountains K-Function Lightning Fire Spatial Statistics
2011/12/16
The spatial pattern of forest fire locations is of interest for fire occurrence prediction. A spatial statistical analysis of lightning-caused fires in the province of Heilongjiang, China, between 197...
Detecting spatial patterns with the cumulant function–Part 2:An application to El Niño
spatial patterns cumulant function El Niñ o
2009/10/30
The spatial coherence of a measured variable (e.g. temperature or pressure) is often studied to determine the regions of high variability or to find teleconnections, i.e. correlations between specific...
Detecting spatial patterns with the cumulant function–Part 1:The theory
spatial patterns cumulant function The theory
2009/10/30
In climate studies, detecting spatial patterns that largely deviate from the sample mean still remains a statistical challenge. Although a Principal Component Analysis (PCA), or equivalently a Empiric...
Variability in spatial patterns of long nonlinear waves from fast ferries in Tallinn Bay
Variability spatial patterns long nonlinear waves fast ferries Tallinn Bay
2009/10/30
High-speed ferries are known to generate wakes with unusually long periods, and occasionally large amplitudes which may serve as a qualitatively new forcing factor in coastal regions that are not expo...
Spatial Patterns of Species Richness： A Hierarchical Perspective
geographic patterns Species Richness Spatial Patterns
2009/9/23
This paper examines several major geographic patterns of species richness and related hy—
potheses of mechanisms．These species patterns include latitudinal gradient，elevation gradient，
aridity gradi...
Influence of landscape heterogeneity on spatial patterns of wood productivity,wood specific density and above ground biomass in Amazonia
landscape heterogeneity spatial patterns wood productivity wood specific density
2010/1/21
Long-term studies using the RAINFOR network of forest plots have generated significant insights into the spatial and temporal dynamics of forest carbon cycling in Amazonia. In this work, we map and ex...
Groundwater-surface water interaction and the climatic spatial patterns of hillslope hydrological response
Groundwater-surface water interaction climatic spatial patterns
2009/5/26
A transient, mixed analytical-numerical model of hillslope hydrological behaviour is used to study the patterns of infiltration, evapotranspiration, recharge and lateral flow across hillslopes. Comput...
Changes and spatial patterns of eco-environment in the farming-pastoral region of northern China
2007/8/24
This paper firstly selects 10 kinds of indexes to reflect eco-environment background condition and builds the multi-subject spatial database by using ground meteorological data, remote sen...
In this paper, we use CEVSA, a process-based model, which has been validated on regional and global scales, to explore the temporal and spatial patterns of Net Primary Productivity (NPP) a...
By using digitized land use maps of Beijing in 1982, 1992 and 1997 and employing GIS spatial analysis techniques, this paper conducts an empirical study on the spatial differentiation and ...
Varying spatial patterns of trend and seasonality in Eurasian runoff time series
spatial patterns trend and seasonality Eurasian runoff time series
2010/1/26
Atmospheric circulation indices can be used to explain the variability of runoff on a continental scale. Beside well-known regional anomalies of precipitation and runoff that correlate with phases of ...