搜索结果: 1-15 共查到“soil organic matter”相关记录30条 . 查询时间(0.078 秒)
Assessing the amount of soil organic matter and soil properties in high mountain forests in Central Anatolia and the effects of climate and altitude
forest soil topographic conditions climate model semi-arid regions Turkey
2017/6/26
The objectives of this study were to determine the amounts of soil organic matter (SOM) stored within surface soils of high mountain forests and how the SOM amounts are affected by aridity and altitud...
SPECTRAL COLOR INDICES BASED GEOSPATIAL MODELING OF SOIL ORGANIC MATTER IN CHITWAN DISTRICT, NEPAL
Color Indices Landsat TM coefficient of the estimator,
2016/7/8
Space Technology provides a resourceful-cost effective means to assess soil nutrients essential for soil management plan. Soil organic matter (SOM) is one of valuable controlling productivity of crops...
STUDY ON SPECTRAL FEATURES OF SOIL ORGANIC MATTER
Soil Organic Matter (SOM) Spectral Features Stepwise Regression Analysis
2015/12/30
The study on soil spectral reflectance features is the physical basis for soil remote sensing. Soil organic matter content influences the soil spectral reflectance dramatically. This paper studied the...
Changes of soil organic matter under minimum tillage in different soil-climatic conditions
Cambisol Chernozem humus content and quality humus fractionation minimum tillage
2015/3/2
Quantitative and qualitative soil organic matter properties were observed in a specific large area experiment (Chernozem – Gross Enzersdorf, Austria) and in a medium-term field experiment (Cambisol – ...
Influence of the degree of soil organic matter lability on the calcium carbonate equilibrium of soil water
calcium carbonate equilibrium degree of lability liming need soil organic matter soil water
2015/3/2
In average samples of three sandy-loamy acid Cambisols from a South Bohemian area labile organic matters were determined by the permangate method modified by the dichromate method, and the rate consta...
The influence of long-term organic and mineral fertilization on soil organic matter
long-term field experiment organic and mineral fertilization crop rotation soil organic matter
2015/2/4
Parameters evaluating soil organic matter quantity (organic C and N content) and quality (hot water extractable C content, aliphatic compounds, microbial biomass C content, basal respiration activity)...
A CENTURY 5 model using for estimation of soil organic matter behaviour at predicted climate change
carbon sequestration CENTURY 5 model climate change modelling regional climate scenario
2015/1/30
The trends of carbon sequestration behaviour have been estimated for the most fertile soil type of Slovakia based on the prognosticated regional climate change scenario. The processes were modelled an...
Characterisation of soil organic matter in long-term fallow experiment with respect to the soil hydrophobicity and wettability
long-term fallow experiment soil organic carbon FTIR spectra hydrophobic (A) and hydrophilic (B) functional groups wettability hydrophobicity
2015/1/30
Soil organic matter under different tillage and fertilisation systems of long-term fallow experiment established in 1958 in Prague was characterised in period of 1972–2004. This experiment consists of...
Soil Organic Matter and its Stability in Aerobic and Anaerobic Conditions
soils organic matter stability aerobic anaerobic conditions
2015/1/28
In eight samples of organic and organomineral surface horizons we studied the stability of soil organic matter in aerobic and anaerobic conditions expressed by the rate constant of its biochemical oxi...
Using satellite hyperspectral imagery to map soil organic matter, total nitrogen and total phosphorus
total nitrogen total phosphorus partial least squares
2015/1/16
Up-to-date and accurate information on soil properties is important for precision farming and environmental management. The spatial information of soil properties allows adjustments of fertilizer appl...
Long residence times of rapidly decomposable soil organic matter: application of a multi-phase, multi-component, and vertically resolved model (BAMS1) to soil carbon dynamics
Long residence times rapidly decomposable soil organic matter multi-phase multi-component vertically resolved model soil carbon dynamics
2014/12/19
Accurate representation of soil organic matter (SOM) dynamics in Earth system models is critical for future climate prediction, yet large uncertainties exist regarding how, and to what extent, the sui...
Models of soil organic matter decomposition: the SOILR package, version 1.0
soil organic matter decomposition
2014/12/10
Soil organic matter decomposition is a very important process within the Earth system because it controls the
rates of mineralization of carbon and other biogeochemical
elements, determining their &...
Effects of different regimes of fertilization on soil organic matter under conventional tillage
soil organo-mineral complex soil humic acid soil fulvic acid
2014/10/28
To explore the effects of different fertilization regimes on soil organic matter (SOM) sequestration in a winter-soybean/corn rotation, a long-term field experiment was conducted in Anhui, China, from...
南京农业大学土壤学课件 Soil Organic Matter。
基于EMD的土壤有机质含量近红外光谱检测（Near-infrared Spectrum Detection of Soil Organic Matter Content Based on Empirical Mode Decomposition）
土壤有机质 检测 经验模态分解 近红外光谱
2010/12/29
以检测土壤有机质含量为例，探讨经验模态分解在土壤近红外光谱检测中的应用，提出了应用的原理和步骤。用处理后的光谱计算了土壤中的有机质含量，并与九点平滑和小波变换方法的处理结果进行了对比分析。结果表明：与传统的九点平滑处理结果相比，SNR从3 dB左右提高到10 dB左右，原始信号与消噪信号之间的标准差由2.972降到0.901；预测集的决定系数r2由0.9410提高到0.9803, 预测均方根...