搜索结果: 1-15 共查到“土壤地理学 soil”相关记录44条 . 查询时间(0.193 秒)
Relating extent of colluvial soils to topographic derivatives and soil variables in a Luvisol sub-catchment, Central Bohemia, Czech Republic
digital elevation model digital soil mapping loess soil erosion soil organic carbon
2015/3/10
Colluvial soils, resulting from accelerated soil erosion, represent a significant part of the soil cover pattern in agricultural landscapes. Their specific terrain position makes it possible to map th...
Assessment of trace and heavy metal distribution by four sequential extraction procedures in a contaminated soil
fractionation metals mining activities pollution
2015/3/9
Four sequential extraction procedures (Sposito, Tessier, Silveira and Bureau Communautaire de Reference (BCR)) were used to evaluate the distribution of some metals (Fe, Cu, Cd and Zn) in a contaminat...
Digital soil mapping from conventional field soil observations
field soil description fuzzy k-means pedometrics regression-kriging terrain
2015/3/9
We tested the performance of a formalized digital soil mapping (DSM) approach comprising fuzzy k-means (FKM) classification and regression-kriging to produce soil type maps from a fine-scale soil obse...
Building soil spectral library of the Czech soils for quantitative digital soil mapping
diffuse reflectance spectroscopy digital soil mapping soil spectral library
2015/3/3
Spectral libraries are the data archives of spectral signatures measured on natural and/or man-made materials. Here, the objective is to build a soil spectral library of the Czech soils (SSL-CZ). Furt...
Analysis of soil degradation in the Czech Republic: GIS approach
degradation GIS modelling soil
2015/3/2
In our work, we have evaluated the available data on the individual types of soil damage, which has been processed in the Czech Republic in recent decades. The individual types of degradation (water e...
Creating GIS on the pilot area of the Litoměřice district. From soil survey to international information systems
archive soil data soil survey (geo)statistical methods and pedotransfer rules soil GIS SOTER
2015/3/2
The procedure of processing and utilising the soil information entering the SOTER system is tested on the pilot area of the Litoměřice district. The reliability of the archive data is examined, t...
Integration of soil information systems. BIS and SOTER perspectives
soil information systems soil maps and survey BIS SOTER
2015/2/4
The article presents an overview and brief characteristics of the selected soil information systems in the Czech Republic. It suggests synchronisation of their development, particularly some convergen...
Effect of temperature on the distribution of polycyclic aromatic hydrocarbons in soil and sediment
sorption desorption thermodynamic parameters polycyclic aromatic hydrocarbons
2015/2/4
The knowledge of sorption-desorption processes of polycyclic aromatic hydrocarbons (PAHs) in natural solids is essential to predict the fate, transport, and environmental risks of these pollutants. In...
The structural porosity in soil hydraulic functions – a review
soil structure bi-modal soils soil water retention unsaturated conductivity pore size distribution structural pore domain matrix pore domain
2015/2/3
Products of biological processes are the dominant factor of soil structure formation in A horizons, while in B horizons their role is less expressed. Soil structure influences dominantly the structura...
Comparison of soil maps with different scales and details belonging to the same area
detailed soil map reconnaissance soil map geographic information system
2015/2/3
Two different soil maps prepared by different institutes at scales of 1:200 000 and 1:25 000 covering identical areas were compared to determine the accuracy of reconnaissance. These soil maps are wid...
Using the sensitivity of biomass production to soil water for physiological drought evaluation
physiological drought soil water content transpiration biomass production mathematical modelling maize
2015/2/3
The analysis of drought as a phenomenon and the proposal of how to define and quantify the deficiency of water in soil for plants, so called physiological drought, are described. The presented approac...
New study in Geology shows humans erode soil 100 times faster than nature（图）
in Geology humans erode soil 100 times faster
2015/1/20
forest and starting intensive agriculture can accelerate erosion so dramatically that in a few decades as much soil is lost as would naturally occur over thousands of years.Had you stood on the banks ...
Effects of soil moisture and length of irrigation on soil wetting to deliver fumigants through microirrigation lines in sandy spodosols
Methyl Bromide Drip Irrigation Soilborne Pests Water Management
2013/3/5
Soil fumigant delivery through microirrigation (drip) lines has the potential to replace direct soil injection into planting beds. However, wetting coverage in these Spodosols must be improved to incr...
Spatial and temporal variability of soil freeze-thaw cycling across Southern Alberta, Canada
Freeze-Thaw Soil Temperature Agro-Ecosystem Modeling Regional Climate Soil Science
2013/3/5
Soil freeze-thaw cycles play an important role in all aspects of agro-ecosystems, such as crop productivity, the evolution of the soil matrix, including trace-gas emissions. In regions that experience...
Phosphorus fixing capacity of the Oxic Rhodustalf—alfisol soil in the Chotanagpur plateau region of Eastern India
P-Fixing Capacity P-Nutrition P-Fixation
2013/3/5
The P-fixing capacity of a soil governs the P-nutrition of crop plants. P-nutrition of the crop plant is more a soil problem and a higher dose of phosphatic fertilizer is necessary for soils having hi...