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  • Daily Definition: Biodegradable 可生物降解

Daily Definition: Biodegradable 可生物降解

  • Posted in Default
  • By admin
  • Date March 29th, 2012 09:47
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  • Our aim is for transparency and clarity; we want you to know all of our methodologies and assumptions. Both are listed below and are defined to support development towards restorative solutions. Chinese and English are listed together to avoid communication gaps.

    Biodegradable 可生物降解:
    In truth, everything biodegrades. Eventually, everything will break down into tiny particles. Though, the time each material takes to degrade differs greatly. Some materials break down over hundreds of thousands of years, others, degrade over a few days. GIGA only considers organic (materials made from organic matter) and inert materials as being biodegradable. This is simple when materials are considered individually. Clarity is blurred with hybrid materials. Plywood, for example, is made from wood (organic) and glue (unknown). The biodegradability of plywood hinges on the composition of its glues. Most glues are inorganic, some are inert, and  few are organic. Though few are inert. Plywood, though primarily made from organic materials, is biodegradable only if its glues inertly decompose.

    Note that organic material growth is fueled by nutrients, often from the self-decomposition. It is important that these sources receive enough nutrients to avoid additives such as fertilizers. See 'Durability' and 'Sustainable Harvesting' for more information.

    事实上,所有事物都可生物降解,最终将分解未细小的颗粒。但是,每个材料所需的分解时间差异万千:一些需要上百上千年,而另一些则只需要几天。GIGA只考虑有机或惰性材料作为可生物降解材料。若遇到混合材料,那么划分的界限就不是那么清晰了。比如胶合板,它由木材(有机物)和胶合剂(未知)组成。那么胶合板的可生物降解性便因为胶合剂而受到影响。目前多数胶合剂是无机材料,只有极少部分是惰性材料。由此可见,虽然胶合板的主要成分是有机物,但也只有当其使用惰性胶合剂时,才可之为可生物降解材料。

    需要注意的是,有机材料的生长一般依赖土壤的营养物质,而且通常是可自分解的物质。因此我们需要确保这些材料有足够的营养物质,而避免采用诸如化肥的添加剂。请参照“耐久性”和“可持续收获”以获得更多信息。

     

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