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首页> 外文期刊>Izvestiya Atmospheric and Oceanic Physics >Application of NDVI in Digital Mapping of Phosphorus Content in Soils and Phosphorus Supply Assessment in Plants
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Application of NDVI in Digital Mapping of Phosphorus Content in Soils and Phosphorus Supply Assessment in Plants

机译：NDVI在植物土壤中磷含量的数字映射中的应用

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摘要

A method for the digital mapping of phosphorus (total, organic, and labile) content in soils has been developed using spatially distributed NDVI values calculated from Landsat 8 image (30-m resolution). A comparative analysis of the phosphorus content has been performed in high- and medium-humous soils. Medium-humous soil (agrochernozems, agro-dark gray) has been found to have lower contents of the total (by a factor of 1.1) and organic (by a factor of 1.5-1.7) phosphorus compared with high-humous agrochernozems. The reverse trend has been identified for the labile phosphorus; that is, medium-humous soils twice exceeded the high-humous agrochernozems in its content. The plants have been proven to have a sufficient supply of phosphorus, since the element content in the aboveground phytomass of the oat-pea mixture was in the optimal range of 0.23-0.5% on a dry weight basis. No phosphorus deficiency symptoms have been detected in the plants by visual diagnostics. No correlation has been found between the phosphorus content in plants, aboveground phytomass stock of the oat-pea mixture and NDVI.
机译：使用从Landsat 8图像（30米分辨率）计算的空间分布的NDVI值开发了用于土壤中磷（总，有机和不稳定）含量的数字映射的方法。磷含量的比较分析已经在高中和中等土壤中进行。已发现中等地土（AgroOchernozems，农业深灰色）的总量含量较低（1.1因子），与高性化农业相比，磷的总量（1.1倍）和有机（1.5-1.7倍）。已识别逆转趋势，但不稳定磷;也就是说，中等人的土壤在其内容中两次超过了高度高级的农业卓越。已被证明植物具有足够的磷，因为燕麦豌豆混合物的地上植物中的元素含量在干重的基础上的最佳范围为0.23-0.5％。通过可视诊断，植物中没有检测到缺磷症状。在植物中的磷含量，燕麦豌豆混合物和NDVI的地上，植物含量之间没有发现相关性。

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