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Chemical and Biological Technologies in Agriculture
Fig. 9 | Chemical and Biological Technologies in Agriculture

Fig. 9

From: Variations in the quantity and chemical composition of soil dissolved organic matter along a chronosequence of wolfberry plantations in an arid area of Northwest China

Fig. 9

Principal component analysis of the 3D DOM fluorescence properties and soil physicochemical properties under the corn field and five wolfberry plantations with different ages. SOM soil organic carbon, DOM dissolved organic matter, AP available phosphorus, TN total nitrogen, C/N carbon/nitrogen ratio, ExK exchangeable potassium, ExNa exchangeable sodium, ExCa exchangeable calcium, ExMg exchangeable magnesium, TEB soil total exchangeable bases, FI fluorescence index, BIX autogenetic index, HIX humification index, C1 protein-like component; C2 mixture of protein and fulvic acid-like components, C3 fulvic acid-like component

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