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生物碳系列性质之一:保水性

发布时间:06-08 22:46 来源: 作者: 阅读:3151 网友评论0

介绍其保水性

           Adding biochar to soil can have direct and indirect effects on soil water retention, which can be short or long lived, and which can be negative or positive depending on soil type. Although pore size distribution in biochar may significantly alter key soil physical properties and processes (e.g. water retention, aeration, habitat), experimental evidence on this is scarce and the underlying mechanisms can onlybe hypothesised at this stage.
           Sub-molecular interactions with clay and silt particles and SOM occur through Van der Waals forces and hydrophobic interactions. It is the interactions at this scale which will determine the influence of biochar on soil water repellency and also the interactions with cations and anions and other organic compounds in soil.
           While biochars are highly heterogeneous across scales, it seems likely that properties such as recalcitrance and effects on water holding capacity are likely to persist across a range of biochar types.
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