搜索结果: 1-15 共查到“spatial variations”相关记录20条 . 查询时间(0.078 秒)
Spatial Variations in Fine Root Turnover, Biomass, and Necromass of Two Vegetation Types in a Karst Ecosystem, Southwestern China
biomass fine root turnover necromass production karst ecosystem
2023/12/6
Revealing the patterns of fine root turnover traits can aid our understanding of the mechanisms of fine roots in adapting to soil nutrient changes. In a karst ecosystem of southwest China, the fine ro...
Spatial Variations of Soil N2 and N2O Emissions from a Temperate Forest: Quantified by the In Situ 15N Labeling Method
15N labeling dinitrogen emission in situ N2O/(N2O + N2) ratio temperate forest water gradient
2023/12/1
Emissions of dinitrogen (N2) and nitrous oxide (N2O) from soil are important components of the global nitrogen cycle. Soil N2O emissions from terrestrial ecosystems have been well studied. However, pa...
Analysis on temporal and spatial variations of groundwater hydrochemical characteristics in the past decade in southern plain of Beijing, China
Beijing Groundwater Hydrochemical characteristics
2018/3/23
Groundwater utilization and protection are crucial for sustainable urban development. This is especially true for Beijing, where groundwater is an important source for urban water supply. In this stud...
The temporal and spatial variations of low frequency geomagnetic pulsations at polar cusp and cap latitudes
Geomagnetic pulsations Antartica
2015/10/8
Geomagnetic field measurements at two Antarctic stations are compared during two weeks in the local summer (January 1-15, 1992). Low frequency (0.6-6 mHz) pulsations are observed at each station near ...
Analysis of spatial variations of abuja land use and land cover from image classification algorithms
Land Use, Land Cover, Image Classification Algorithms
2015/8/20
What image classification does is to assign pixel to a particular land cover and land use type that has the most similar spectral signature.
However, there are possibilities that different methods or...
SPATIAL VARIATIONS IN INFANT AND CHILD MORTALITY LEVELS IN SIERRA LEONE
CHILD MORTALITY LEVELS SPATIAL VARIATIONS IN INFANT
2015/7/7
The general research objectives of this project were to calculate and map levels of infant, child and adult mortality in the administrative districts of Sierra Leone using 1974 census data, followed b...
Understanding spatial variations in the impact of accessibility on land value using geographically weighted regression
accessibility light rail, land value land value capture
2013/11/21
In recent years, land value capture has attracted increasing attention as a result of its potential for funding transport infrastructure. There has been substantial research into this issue recently i...
Spatial variations of 226Ra, 228Ra, and 228Th activities in seawater from the eastern East China Sea
radium isotopes thorium isotopes East China Sea shelf currents seasonal variation water mixing scavenging
2017/4/11
A total of 74 surface and subsurface water samples at depths shallower than 200 m were collected in the eastern East
China Sea (ECS), and spatial and seasonal variations in 226Ra, 228Ra, and 228Th ac...
The spatial variation of coercivity on patterned magneto-optical ~MO! materials has been studied with a Kerr microscope. Our results show that the coercivity values on arrays made by holes are larger ...
Monitoring of temporal and spatial variations in fumarole helium and carbon dioxide characteristics at Poás and Turrialba volcanoes, Costa Rica (2001-2009)
helium isotopes carbon isotopes Central America Costa Rica volcano monitoring
2017/8/9
We report results of a 9-year monitoring program that took place from 2001 to 2009 of the helium and carbon isotope (3He/4He, δ13C) and relative abundances ratios (CO2/3He) of fumarole sites at Poás a...
Seasonal and spatial variations analysis of pollution status of Ondo coastal environment Nigeria using principal component analysis
PCA sediments seasonal and spatial variation metals coastal area
2017/8/9
The variation in environmental quality of Ondo coast between seasons and sites were evaluated using principal component analysis (PCA). Seventeen metals were analysed in water and sediments with five ...
Temporal and spatial variations in Late Quaternary slope sedimentation along the undersupplied margins of the Rockall Trough,offshore west Ireland
Temporal and spatial variations Late Quaternary slope sedimentation undersupplied margins
2009/12/3
A total of 63 gravity cores, together with high-resolution bathymetry data and sidescan sonar imagery, were studied along both eastern and western margins of the Rockall Trough, offshore west Ireland....
Spatial Variations in Needle Nitrogen Content in Sugi (Cryptomeria japonica D. Don) Plantations across Japan
Cryptomeria japonica Gi*(d) statistics needle nitrogen content spatial variation temperature
2009/8/24
For a general assessment of the nitrogen status of sugi plantations in Japan, we measured nitrogen content in the needles of sugi (Cryptomeria japonica D. Don) trees growing at 531 sites across the co...
Temporal and Spatial Variations of Carbohydrate Content in Rice Leaf Sheath and Their Varietal Differences
Carbohydrate Enzyme Leaf sheath Spatial variation Temporal change Variety
2009/7/27
In rice plant, carbohydrates accumulated in leaf sheaths before heading are translocated to grain and affect yield formation greatly. To clarify the intrinsic mechanism of carbohydrate metabolism in t...
Getting the red out：a stellar approach to determining spatial variations of interstellar dust
spatial variations interstellar dust
2009/6/8
Getting the red out：a stellar approach to determining spatial variations of interstellar dust。