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Pedogenic Processes and Urban Tree Health in Engineered Urban Soils in Boston, Massachusetts, USA
Soil Science ( IF 1.692 ) Pub Date : 2018-01-01 , DOI: 10.1097/ss.0000000000000231
Bryant C. Scharenbroch , Kelby Fite , Eric Kramer , Robert Uhlig

ABSTRACT Trees provide many ecosystem services in the urban environment. For these benefits to be realized, trees must establish and grow to large sizes. Engineered urban soils (EUS) are intended to promote tree health and sometimes also perform other functions such as supporting infrastructure. Substantial amounts of time and money are invested into these soils and trees, yet data on longitudinal soil developmental processes (i.e., pedogenic processes) and tree performance are limited for these systems. In this research, soil development in seven EUS installations in Boston, Massachusetts, was assessed. The EUS studied included sand-based structural soils, rock-based structural soils, and horticultural mixes. The sites spanned a chronosequence of 6 to 45 years since installation and included five different tree species. The data confirm the hypotheses that pedogenic processes are occurring in these soils at different rates and magnitudes. Illuviation of clay, acidification, and a decrease in the mineralization quotient (qM, or respiration divided by soil organic matter) were observed with increasing site age. The data suggest that overall soil quality may be influential on tree health, and no individual soil physical, chemical, or biological property is driving site differences important for trees. Urban vegetation managers should recognize that these are not static systems and the actions to care for these systems should evolve as the soils develop over time.

中文翻译:

美国马萨诸塞州波士顿市工程化城市土壤中的成土过程和城市树木健康

摘要 树木在城市环境中提供了许多生态系统服务。为了实现这些好处,树木必须长成大尺寸。城市工程土壤 (EUS) 旨在促进树木健康,有时还具有其他功能,例如支持基础设施。在这些土壤和树木上投入了大量的时间和金钱,但是关于这些系统的纵向土壤发育过程(即成土过程)和树木性能的数据是有限的。在这项研究中,评估了马萨诸塞州波士顿的七个 EUS 装置的土壤发育情况。所研究的 EUS 包括沙基结构土壤、岩石基结构土壤和园艺混合物。这些地点自安装以来跨越了 6 到 45 年的时间序列,包括五种不同的树种。数据证实了这些土壤中成土过程以不同速率和幅度发生的假设。随着场地年龄的增加,观察到粘土的冲刷、酸化和矿化商数(qM,或呼吸除以土壤有机质)的减少。数据表明,整体土壤质量可能会影响树木的健康,并且没有任何土壤物理、化学或生物特性会导致对树木很重要的地点差异。城市植被管理者应该认识到,这些不是静态系统,随着土壤的发展,保护这些系统的行动应该不断发展。或呼吸除以土壤有机质)随着场地年龄的增加而观察到。数据表明,整体土壤质量可能会影响树木的健康,并且没有任何土壤物理、化学或生物特性会导致对树木很重要的地点差异。城市植被管理者应该认识到,这些不是静态系统,随着土壤的发展,保护这些系统的行动应该不断发展。或呼吸除以土壤有机质)随着场地年龄的增加而观察到。数据表明,整体土壤质量可能会影响树木的健康,并且没有任何土壤物理、化学或生物特性会导致对树木很重要的地点差异。城市植被管理者应该认识到,这些不是静态系统,随着土壤的发展,保护这些系统的行动应该不断发展。
更新日期:2018-01-01
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