soils available iron 土壤有效铁
Soil pH value, organic matter, total nitrogen, available phosphorus, available potassium and effective copper, effective manganese, boron, silicon decreased with the increasing of slope, while soil available iron, molybdenum and efficient sulfur content increased with the slope.
土壤有机质、全氮、有效磷、有效钾、有效铜、有效锰、有效硼、有效硅,随着坡度的升高明显下降;土壤有效铁、有效钼、有效硫含量,随着坡度的升高而增加;随着坡度升高酸性增强。
参考来源 - 大兴安岭东麓旱作丘陵区耕地质量演变与可持续利用·2,447,543篇论文数据，部分数据来源于NoteExpress
TP, rapid available phosphorus, organic content and rapid available iron were gradually decreased in the top soil layer of wetland along the flow path.
总体而言，来水中的磷、有机质和速效铁以沿程逐渐降低的方式分布于湿地表层土壤中。
Trace elements fertilizer is rarely used in this region which leading to a decrease on the content of soil available iron, available Manganese, and available copper.
当地农户施用微量元素肥料很少，造成土壤有效铁、有效锰和有效铜含量的下降。
He reasoned that iron took on more or less oxygen in response to conditions in the kimberlitic magma itself—mainly in response to heat and the available oxygen.
他推断，铁吸收或多或少的氧气是由于金伯利岩浆本身的条件——主要是由于热量和可用的氧气。
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