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作者

来源

LANDSCAPE AND URBAN PLANNING,Vol.165,P.84-92

语言

英文

关键字

Unsaturated soil; Permeability function; Soil hydraulic properties; Water infiltration; Containerised soil

作者单位

[Rahardjo, Harianto] Nanyang Technol Univ, Sch Civil & Environm Engn, Blk N1,1B-36,50 Nanyang Ave, Singapore 639798, Singapore. [Amalia, Nina] EPMC, 1 Cleantech Loop,CleanTech One,06-08, Singapore 637141, Singapore. [De Wee, Jian] RHT Capital Pte Ltd, 6 Battery Rd, Singapore 049909, Singapore. [Leong, Eng Choon] Nanyang Technol Univ, Sch Civil & Environm Engn, Blk N1,1C-80,50 Nanyang Ave, Singapore 639798, Singapore. [Ow, Lai Fern] Singapore Bot Gardens, Natl Pk Board, Ctr Urban Greenery & Ecol, 1 Cluny Rd, Singapore 259569, Singapore. [Tan, Puay Yok] Natl Univ Singapore, Sch Design & Environm, Dept Architecture, 4 Architecture Dr, Singapore 117566, Singapore. Rahardjo, H (reprint author), Nanyang Technol Univ, Sch Civil & Environm Engn, Blk N1,1B-36,50 Nanyang Ave, Singapore 639798, Singapore. E-Mail: chrahardjo@ntu.edu.sg; namalia@ntu.edu.sg; Rjdwee@gmail.com; cecleong@ntu.edu.sg; genevieve_ow@nparks.gov.sg; akitpy@nus.edu.sg

摘要

The development of infrastructure in an urban city, such as road widening and building work, will inevitably result in the removal of trees. Therefore, innovative solutions such as containerised tree in the manner of increasing the portability of trees would be necessary to facilitate efficient transplanting in order to maintain a sustainable green urban environment. Differences in soil hydraulic properties between soil mixture and in situ soil naturally occur in tree planting, but this difference becomes more important in the use of container due to the limited tree root movement. The objective of this research was to examine the effects of soil hydraulic properties between the soils inside and outside of the container with focus being placed on moisture infiltration both in and out of the container. Field instrumentation and laboratory tests were carried out together with parametric study using numerical model. The results suggested that the higher the ratio between the saturated permeability of the soils inside and outside the container, the lower was the ability of water to flow in and out of the container.