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Changes in soil chemistry and element uptake by Oak seedlings after application of soil amendment
Scandinavian Journal of Forest Research ( IF 1.8 ) Pub Date : 2020-12-08
Mahya Tafazoli, Seyed Mohammad Hojjati, Pourya Biparva, Yahya Kooch, Norbert Lamersdorf

ABSTRACT

The purpose of this study is to investigate the effect of cellulosic wastes and nanoscale zero-valent iron (nZVI) on the soil properties and the nutrient uptake by Quercus castaneifolia C.A.Mey seedlings. The seedlings were planted in pots (unpolluted soil) and cadmium (Cd) was added to the pots in three concentrations (10, 20, 30 mg.kg−1). Cellulosic wastes were mixed with the soil (at the same time as the planting) in four levels (W: 0, 10, 20, 30 g.100g−1 soil). The reduction method was used to prepare nZVI, then the nanoparticles were injected into the polluted pots in four levels (N: 0, 1, 2, and 3 mg.kg−1). The lowest concentration of Cd in leaves, stems and roots and for all the contamination levels was observed in N3. All the cellulosic wastes and N3 significantly increased the soil pH at all the levels of contamination. An increasing trend of the soil carbon (C) content was observed by adding the cellulosic wastes. The highest pH and C content were observed in W3. The lowest bioavailable Cd contents for all the contamination levels was observed in N3. According to the results, nZVI and cellulosic wastes could help the plants establishing in heavy metal-polluted lands.



中文翻译:

施用土壤改良剂后橡树幼苗对土壤化学和元素吸收的变化

摘要

这项研究的目的是研究纤维素废料和纳米级零价铁(nZVI)对栎栎幼苗的土壤特性和养分吸收的影响。将幼苗种植在盆中(未污染的土壤),并以三种浓度(10、20、30 mg.kg -1)向盆中添加镉(Cd )。将纤维素废料与土壤混合(在种植的同时)分为四个等级(W:0、10、20、30 g.100g -1土壤)。还原法用于制备nZVI,然后将纳米颗粒以四个水平(N:0、1、2和3 mg.kg -1)注入污染的锅中)。在N3中,叶片,茎和根中以及所有污染水平中的Cd浓度最低。在所有污染水平下,所有纤维素废料和N3均显着提高了土壤的pH值。通过添加纤维素废物,观察到土壤碳(C)含量呈增加趋势。在W3中观察到最高的pH和C含量。在N3中,所有污染物水平的Cd生物利用率最低。根据结果​​,nZVI和纤维素废料可以帮助植物在重金属污染的土地上建立。

更新日期:2020-12-09
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