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Mineral Nutrients, Organic Amendment, and Water Impact Decomposition of Biodegradable Containers Under Controlled Conditions
Water, Air, & Soil Pollution ( IF 3.8 ) Pub Date : 2020-09-21 , DOI: 10.1007/s11270-020-04866-7
Bethany A. Harris , Mussie Y. Habteselassie , Svoboda V. Pennisi

Laboratory studies were conducted to evaluate effect of soil water content, organic soil amendment, and mineral nutrient application on decomposition of three types of biodegradable containers: recycled paper, wood pulp fiber, and coconut coir over 182 days. Soil respiration was assessed through alkaline trap and titration method to determine decomposition of biodegradable containers. Percentage of carbon content remaining in the container material after 182 days was also quantified. Relative to soil water content, recycled paper containers under 40% water holding capacity (WHC) had higher carbon dioxide released than 60%WHC. Carbon analysis indicated that less carbon remained for all container types under 60% than 40%WHC. For recycled paper and coconut coir pots, treatments receiving container and soil amendment had significantly increased soil respiration. Post-experiment carbon analysis revealed less carbon remained in the recycled paper, wood pulp fiber, and coconut coir containers in the absence of organic soil amendment. For coconut coir, the interaction of container × mineral nutrients appeared to increase soil respiration with higher carbon dioxide released under biodegradable container × low mineral nutrient. This study suggests that cultural practices (i.e., irrigation and organic matter amendment) could facilitate degradation for certain biodegradable container types; however, to provide extensive cultural practice recommendations regarding biodegradable containers, more research is needed.



中文翻译:

受控条件下可生物降解容器的矿物质营养,有机物修正和水影响分解

进行了实验室研究,以评估土壤水含量,有机土壤改良剂和矿质养分的施用对三种类型的可生物降解容器(回收纸,木浆纤维和椰子壳)在182天内分解的影响。通过碱阱和滴定法评估土壤呼吸,以确定可生物降解容器的分解。还定量了182天后残留在容器材料中的碳含量的百分比。相对于土壤含水量,持水量(WHC)为40%的再生纸容器的二氧化碳释放量高于60%WHC。碳分析表明,对于60%以下的所有容器类型,残留的碳要少于40%的WHC。对于再生纸和椰壳壶,接受容器和土壤改良剂的处理显着提高了土壤呼吸。实验后的碳分析表明,在没有有机土壤改良剂的情况下,再生纸,木浆纤维和椰子椰壳容器中残留的碳较少。对于椰壳椰壳,容器×矿质养分的相互作用似乎增强了土壤呼吸,而在可生物降解的容器×低矿质养分下释放的二氧化碳含量更高。这项研究表明,文化习俗(例如灌溉和有机质改良)可以促进某些可生物降解容器类型的降解;但是,要提供有关可生物降解容器的广泛文化实践建议,还需要更多的研究。木浆纤维和椰子椰壳容器中不加有机土壤改良剂。对于椰壳椰壳,容器×矿质养分的相互作用似乎增强了土壤呼吸,而在可生物降解的容器×低矿质养分下释放的二氧化碳含量更高。这项研究表明,文化习俗(例如灌溉和有机物改良)可以促进某些可生物降解容器类型的降解;但是,要提供有关可生物降解容器的广泛文化实践建议,还需要更多的研究。木浆纤维和椰壳纤维容器中没有有机土壤改良剂。对于椰壳椰壳,容器×矿质养分的相互作用似乎增加了土壤呼吸,而在可生物降解的容器×低矿质养分下释放的二氧化碳含量更高。这项研究表明,文化习俗(例如灌溉和有机质改良)可以促进某些可生物降解容器类型的降解;但是,要提供有关可生物降解容器的广泛文化实践建议,还需要更多的研究。这项研究表明,文化习俗(例如灌溉和有机质改良)可以促进某些可生物降解容器类型的降解;但是,要提供有关可生物降解容器的广泛文化实践建议,还需要更多的研究。这项研究表明,文化习俗(例如灌溉和有机质改良)可以促进某些可生物降解容器类型的降解;但是,要提供有关可生物降解容器的广泛文化实践建议,还需要更多的研究。

更新日期:2020-09-22
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