Contaminants and the soil environment in New Zealand

Roberts, A. H. C.; Cameron, Keith; Bolan, Nanthi; Ellis, Howard; Hunt, Stuart

doi:10.1007/978-94-009-1626-5_20

Cited by 9 publications

(4 citation statements)

References 28 publications

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“…Copper pollution to the ecosystem has drawn worldwide attention [1,2] . To investigate and rehabilitate the polluted environment by the heavy metals, it is very critical to monitor and identify the polluted objects.…”

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confidence: 99%

“…With the correlation coefficient R 2 more than 0.95, these parameters of A 1 , A 2 and S can be perfectly used to simulate and predict the copper level in Brassica Campestris L. leaf. red edge position, chlorophyll, plant spectrum, plant indicatorCopper pollution to the ecosystem has drawn worldwide attention [1,2] . To investigate and rehabilitate the polluted environment by the heavy metals, it is very critical to monitor and identify the polluted objects.…”

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confidence: 99%

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Study on the spectral response of Brassica Campestris L. leaf to the copper pollution

Liu

Hou

et al. 2008

Sci. China Ser. E-Technol. Sci.

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Brassica Campestis L. was cultivated in the soil at the laboratory. The red edge, the visual spectrum and the near-infrared spectrum of Brassica Campestis L. leaf were used to explore the spectral response of Brassica Campestis L. leaf to the copper stress. As the Cu content in the soil gets increased, the copper level in Brassica Campestris L. leaf would be increased, and the chlorophyll level in Brassica Campestris L. leaf would be decreased. As a result, the visual spectral reflectance (A 1 ) of Brassica Campestris L. leaf is increased, and the blue-shift (moving towards the shorter waveband) degree (S) of the red edge (the ascending region of the reflectivity at 680-740 nm) gets increased. However, the near-infrared spectral reflectance (A 2 ) decreases. With the correlation coefficient R 2 more than 0.95, these parameters of A 1 , A 2 and S can be perfectly used to simulate and predict the copper level in Brassica Campestris L. leaf. red edge position, chlorophyll, plant spectrum, plant indicatorCopper pollution to the ecosystem has drawn worldwide attention [1,2] . To investigate and rehabilitate the polluted environment by the heavy metals, it is very critical to monitor and identify the polluted objects. The traditional chemical analysis is limited by scope, cost, time and labor. The vegetation-monitoring method of using the remote sensing technology is dynamic, much faster and able to provide a broader view and much more information [3,4] . This technique is becoming one of the significant methods for exploiting resource and preventing environmental pollution.As a dominant part of the terrestrial ecosystem, the vegetation has a direct impact on the holistic ecosystem. The vegetation may become an important index [5,6] to reflect the ecological pollution. When a plant is polluted by heavy metals, its leaf spectrum would be characteristically changed [7] . More and more researchers are engaged in the plant spectral response to the soil pollution and make much progress in the response mechanism [8][9][10][11] . However, there is no reported

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confidence: 99%

mentioning

confidence: 99%

Study on the spectral response of Brassica Campestris L. leaf to the copper pollution

Liu

Hou

et al. 2008

Sci. China Ser. E-Technol. Sci.

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“…Treating timber with preservatives containing Cu, chromium, and arsenic results in soils containing concentrations of Cu great enough to prevent all plant growth but such contamination is usually restricted to soils adjacent to timber treatment sites. Pastoral soils in New Zealand do not appear to be contaminated with Cu (Roberts et al 1996).…”

Section: Occurrence and Behaviour Of Copper In Soilmentioning

confidence: 99%

“…The more readily plantavailable forms include Cu ions in solution, soluble organic-Cu complexes, and Cu on the soil's exchange complex (Alloway 1995). However, Bolan et al (2003) distinguish between Cu adsorbed on soluble organic matter and free Cu ++ ions in the soil solution: the former may increase the mobility of Cu in the soil while the latter represents the plant available fraction (Roberts et al 1996). The proportion of total soil Cu which is available to plants depends on soil composition and pH.…”

Section: Forms and Availability Of Soil Cu To Plantsmentioning

confidence: 99%

Significance of soil copper in the urban development of horticultural soils

Cornforth

Bussell

Lewthwaite

2003

New Zealand Journal of Crop and Horticultural Science

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In New Zealand, copper (Cu) applied to soils in fertilisers, urban and animal wastes, or pesticides may increase Cu concentrations from an average of 30 mg kg -1 to more than 10 times this value and may restrict the development of treated areas for residential use. Guidelines for assessing such possible hazards have been proposed by planning authorities. The behaviour of Cu in soils, plants, and animals is reviewed to test the validity of these guidelines. It is concluded that the potential risks associated with Cu in horticultural soils are very much less than those implied by current New Zealand guidelines.

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