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南京农业大学农学院《Remote Sensing of Environment》发表智慧农业团队“Estimating leaf nitrogen content by coupling a nitrogen allocation model with canopy reflectance”（图）
智慧农业 光谱监测 植物光合
2023/10/28
2022年11月1日，农学院智慧农业团队在国际顶级遥感期刊《Remote Sensing of Environment》发表了题为“Estimating leaf nitrogen content by coupling a nitrogen allocation model with canopy reflectance”的研究论文，报道了他们在冠层尺度氮含量光谱监测普适性模型构建方面的重要进展...
Development of a Multivariate Regression Model for Soil Nitrate Nitrogen Content Prediction
linear regression multivariate statistics nitrogen NPS soil moisture spatial analysis visualization
2015/8/11
Although soil nitrate nitrogen (N) is a nutrient source for crop, it could be a potential nonpoint pollution source to the environment when its content remains high with an inappropriate management. S...
Development of a Multivariate Regression Model for Soil Nitrate Nitrogen Content Prediction
NPS soil moisture spatial analysis visualization
2015/1/6
Although soil nitrate nitrogen (N) is a nutrient source for crop, it could be a potential nonpoint pollution source to the environment when its content remains high with an inappropriate management. S...
Organic matter sedimentation in the western Barents Sea region:Terrestrial and marine contribution based on isotopic composition and organic nitrogen content
Organic matter sedimentation western Barents Sea region Terrestrial and marine contribution
2009/12/2
Here, we present bulk organic geochemical data from a spatial grid of surface samples from the western Barents Sea region. The results show that the distribution of organic carbon in surface sediments...
油菜氮素光谱定量分析中水分胁迫与光照影响及修正 Effect and Correction of Water Stress and Lighting Factor on Rape Nitrogen Content Spectral Analysis
油菜 含氮量 光照 水分胁迫
2009/5/18
研究了油菜氮素和水分胁迫在光谱检测中的相互作用，以及光照的变化对作物光谱检测的影响。为了克服光照因素对光谱检测的影响，针对氮素和水分的特征波长分别建立了基于光谱反射率变化率的光照修正模型；为了实现对氮素和水分相互作用的解耦，针对不同含水率水平的植株分别建立了全氮含量光谱特征的主成分回归模型。利用氮素光谱组合分析模型对植株全氮含量进行预测，结果表明，实测值与预测值的相关系数R为0.92，均方根误（R...
Effect of temperature on diatom volume, growth rate, and carbon and nitrogen content: Reconsidering some paradigms
iatom volume growth rate carbon
2014/5/30
We examined the response of diatoms to naturally experienced temperatures and tested these hypotheses: (1)
diatoms follow the rule that organism size decreases with increasing temperature; (2) diatom...