Allometric Modeling of Plant Root Growth and Its Application in Rhizosphere Remediation of Soil Contaminants
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- 作者：Paul E. Olson ; Tom Wong ; Mary Beth Leigh ; and John S. Fletcher
- 刊名：Environmental Science & Technology
- 出版年：2003
- 出版时间：February 1, 2003
- 年：2003
- 卷：37
- 期：3
- 页码：638 - 643
- 全文大小：337K
- 年卷期：v.37,no.3(February 1, 2003)
- ISSN：1520-5851
文摘
Allometric curves relating tree trunk diameter to rootbiomass, depth, and breadth were compiled for mulberry(Morus sp.). The curves were based on statistical analysesof measurements made on 29 different-sized treesranging in age from 2 to 15 yr that had grown from seedin a naturally revegetated former sludge basin containingpolyaromatic hydrocarbons. Over a 15-yr period, thecurves indicate that the fine root biomass (<1.5 mmdiameter) increases 60-fold and, under the right circumstances, can be a part of a root system that reaches a 2-mdepth. The fine roots of mulberry were shown to produceseveral flavonoid compounds at concentrations (rangingfrom 94 to 525 
g/cm3) known to support the growth oforganisms capable of degrading xenobiotics. Recognizingthe root system as the driver of rhizoremediation, allometrycurves presented in this paper can be used to quantifythe magnitude of the driver (root system) without damagingplants during the course of a multiyear field study.
g/cm3) known to support the growth oforganisms capable of degrading xenobiotics. Recognizingthe root system as the driver of rhizoremediation, allometrycurves presented in this paper can be used to quantifythe magnitude of the driver (root system) without damagingplants during the course of a multiyear field study.