Potential Compost Benefits for Restoration Of Soils Disturbed by Urban Development
Potential Compost Benefits for Restoration Of Soils Disturbed by Urban Development
复制标题
堆肥对恢复受城市发展破坏的土壤的潜在益处
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. Cogger
中科院分区：
文献类型：
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作者：
C. Cogger
对因城市发展而退化的土壤进行堆肥改良被视为改善土壤和景观质量、减少径流和为当地生产的堆肥创造高价值市场的一种方式。本文综述了农业和园艺中使用的有机土壤改良剂的文献，并将结果扩展到城市景观中的扰动土壤。农业施用有机改良剂的研究一致表明，土壤容重和渗透阻力随改良剂用量的增加而减小，团聚体稳定性、孔隙度和入渗速率随改良剂用量的增加而增加。有机添加物对植物有效水分的影响尚不清楚。虽然有机添加物增加了土壤的持水能力，但增加的大部分可能无法为植物所用。堆肥添加剂的营养价值往往被忽视。C：N比为20：1或更低的堆肥可以提供大量的氮和其他营养素，改善草坪和景观植物的建立，并减少所需的补充营养素的量。具有高C：N比的材料，其可以延迟植物建立。结果表明，堆肥修正率约三分之一的体积应适合建立景观床在潮湿，温带环境中的土壤退化的发展。建坪建议用量为体积的15 - 25%。
Compost amendment of soils degraded by urban development is seen as a way to improve soil and landscape quality, reduce runoff, and create a high-value market for locally produced compost. This review evaluates literature on organic soil amendments used in agriculture and horticulture, and extends results to disturbed soils in urban landscapes. Research on agricultural use of organic amendments consistently shows soil bulk density and penetration resistance decreasing with increasing amendment rate, and aggregate stability, porosity, and infiltration rate increasing with amendment rate. The effect of organic amendments on plant available water is less clear. Although organic amendments increase soil water holding capacity, much of the increase may not be available to plants. The nutrient benefits of compost amendments are often overlooked. Composts with a C:N ratio of 20:1 or less can provide significant amounts of nitrogen and other nutrients, improving the establishment of turf and landscape plants, and reducing the amount of supplemental nutrients needed. Materials with a high C:N ratio immobilize N, which can retard plant establishment. Results suggest that compost amendment rates of about one-third by volume should be suitable for establishing landscape beds in humid, temperate environments in soils degraded by development. Rates of 15 to 25% by volume are suggested for lawn establishment.