搜索结果: 1-15 共查到“Seasonal variations”相关记录49条 . 查询时间(0.129 秒)
Seasonal Variations in Carbon, Nitrogen, and Phosphorus Stoichiometry of a Robinia pseudoacacia Plantation on the Loess Hilly Region, China
ecological stoichiometry plants-litter-soil seasonal variation plantation Loess Plateau
2024/1/11
Seasonal variations in stoichiometry are a crucial regulatory mechanism for plant communities that respond to environmental changes. However, the seasonal characteristics of stoichiometry in plants, l...
A comparison of f0F hmE model calculations with El Arenosillo digisonde observations. Seasonal variations
Ionospheric E-layer-theoretical modeling solar EUV nitric oxide
2015/10/8
Seasonal variations of hmE and f0F2 are analyzed using El Arenosillo digisonde observations during solar minimum (1995-1996). Unlike some widely used empirical models daytime hmE show seasonal variati...
Seasonal variations in natural processesand atmospheric precipitation
natural processes seasonal variations precipitation
2015/9/14
To study the nature of seasonal variations in time series measured at the Garm test site, a local model based on the experimental data of atmospheric precipitation penetration into the soil has been p...
Investigations on diurnal and seasonal variations of Schumann resonance intensities in the auroral region
resonances ELF observations ionospheres
2015/9/2
Measurements of the magnetic component of the Schumann resonance in the frequency range 6-14 Hz were performed
at high latitude location (TNB Antarctica; geographic coordinates: 74.7°S, 164.1°E; geom...
Seasonal Variations in Voluntary Intake and Apparent Digestibility of Forages in Goats Grazing on Introduced Leymus chinensis Pasture
Leymus chinensis n-Alkanes Intake Digestibility Goat
2016/5/16
The nutrient composition of pasture, voluntary intake and digestibility of diet ingested by goats grazing on an introduced Leymus chinensis pasture were measured across spring (May), summer (July), au...
Seasonal Variations of the Surface Fluxes and Surface Parameters over the Loess Plateau in China
Loess Plateau Surface Fluxes Bulk Transfer Coefficient Soil Moisture Availability
2013/2/27
Turbulent fluxes were measured by an eddy covariance system at three levels over an intricate land surface on the southern part of the Loess Plateau, consisting of heterogeneous flat terrain and a lar...
Seasonal variations in soil respiration, heterotrophic respiration and autotrophic respiration of a wheat and maize rotation cropland in the North China Plain
Heterotrophic respiration Maize North China Plain Soil respiration Wheat
2013/7/25
Determining soil respiration from croplands is necessary for evaluating the global terrestrial carbon budget and how it is altered in future climates. This study explored seasonal characteristics and ...
Potential Source Regions Contributing to Seasonal Variations of Black Carbon Aerosols over Anantapur in Southeast India
BC aerosol Potential sources regions AOD Å ngströ m exponent PM2.5
2016/3/25
Continuous measurements of black carbon (BC) mass concentration performed at Anantapur [14.62°N, 77.65°E, 331 m
asl], a suburban location in southeast India, using an Aethalometer from January to Dec...
Comparison of farmed and wild common carp (Cyprinus carpio): Seasonal variations in chemical composition and fatty acid profile
SFA MFA PUFA liquid protein fatty acid composition fillet
2014/2/25
Chemical composition and fatty acid profile of fillets from farmed and wild common carp were assessed in the course of four seasons. Ten wild and ten0 farmed fish were collected in the middle month of...
Seasonal Variations of Some Ecological Parameters in Tigris River Water at Baghdad Region, Iraq
Ecological Parameters Fecal Ccoliform Tigris River Water Pollution
2013/3/19
This study aimed at using nine ecological parameters in evaluating the quality of the Tigris River for public usage, by choosing five sampling sites along the river in Baghdad area. These parameters i...
SEASONAL VARIATIONS OF AIRBORNE POLLEN IN ALLAHABAD, INDIA
airborne pollen grains meteorological parameters pollen season
2010/12/22
Using a Burkard 7-day volumetric sampler a survey of airborne pollen grains in Allahabad was carried out from December 2004 – November 2005 to assess the qualitative and quantitative occurrence of pol...
Multi-year (2004–2008) record of nonmethane hydrocarbons and halocarbons in New England: seasonal variations and regional sources
nonmethane hydrocarbons halocarbons New England seasonal variations regional sources
2010/8/13
Multi-year time series records of C2-C6 alkanes, C2-C4 alkenes, ethyne, isoprene, C6-C8 aromatics, trichloroethene (C2HCl3), and tetrachloroethene (C2Cl4) from canister samples collected during Januar...
Seasonal variations of concentrations and optical properties of water soluble HULIS collected in urban environments
Seasonal variations water soluble HULIS urban environments
2010/8/12
Major contributors to the organic aerosol include water-soluble macromolecular compounds (e.g. HULISWS: Water Soluble Humic LIke Substances). The nature and sources of HULISWS are still largely unknow...
Seasonal variations in the concentrations of methyl and ethyl nitrate in ashallow freshwater lake
Seasonal variations in the concentrations methyl ethyl nitrate in a shallow freshwater lake
2014/4/16
Between February and October 2007, a time series of alkyl nitrate concentrations in the water column of a shallow freshwater lake, University of East Anglia Broad, located in southeastern England was ...
The paper presents a method for testing second order stationarity against
the alternative that seasonal variations take place in the autocovariance
function. This is a modification of a test suggest...