Soil Components of Soil The four components of soil are minerals, organic matter, air, and water The minerals come from rocks that have been broken down into tiny particles Organic matter is called humus and comes from the decay and waste products of living things and provides nutrients for pl...
Soil Properties Affected by Soil Texture Porosity refers to that part of a soil volume that is not occupied by soil particles or organic matter. Pore spaces are filled with either air, other gases, or water. Large pores allow the ready movement of air and the drainage of water. Soil Proper...
施用膨润土对土壤含水量和有机质含量的影响 effects of bentonite on content of soil water and soil organic matter 热度: 土壤水分 soil water 热度: BasicRoseCulture John&MitchieMoe MasterRosarians PacificNorthwestDistrict AmericanRoseSociety November11,2011 ...
SoilandItsUses土壤及其利用(共30张精选PPT)Outline:•SoilFormation•SoilProperties•Erosion•SoilConservation •Land-Portionoftheworldnotcoveredbywater.•Soil-Mixtureofminerals,organicmaterial,livingorganisms,air,andwater.SoilFormation •Soilformationbeginswithfragmentationofparentmaterial.•母岩-Ancient...
《土壤肥料学》课程PPT教学课件(土壤学)第二章 土壤有机质(soil organic matter),ppt格式文档下载,共64页。
(molten rock) Melting Metamorphic rock Slate, marble, gneiss, quartzite Layers in Mature Soils • Infiltration: the downward movement of water through soil. • Leaching: dissolving of minerals and organic matter in upper layers carrying them to lower layers. • The soil type determines the ...
characteristicsornature)Includesmineralandorganicmattercansupportplants.Thesoilconsistsofmatterinallthree states Solid liquid gas bothmineralmatterandorganicmatter 土壤的特点(characteristics)soilaverydynamiclayer The solid,liquid,andgaseousmatterof thesoilareconstantlychanging ...
Soil organic matter can be: (1) physically stabilized, or protected from decomposition, through microaggregation, or (2) intimate association with silt and clay particles, and (3) can be biochemically stabilized through the formation of recalcitrant SOM compounds. In addition to behavior of each ...
–有机质(soilorganicmatter)：•动植物残体•腐殖质（humus）：–土壤中动植物残体经微生物分解转化成简单有机化合物，又重新合成的复杂而较稳定的高分子有机化合物。占有机质总量的85～90％。主要组成元素为碳、氢、氧、氮、硫、磷等。–基本成分：以胡敏酸与富里酸为主。–性质：稳定、病原体死灭–...
The delta super(13)C of the respired CO sub(2) was similar to that of the organic matter in the upper soil layers but became increasingly super(13)C enriched with depth, up to 2.5ppt relative to the organic matter. We hypothesise that this super(13)C enrichment of the CO sub(2) ...