Journal
ECOLOGICAL ENGINEERING
Volume 129, Issue -, Pages 38-44Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ecoleng.2019.01.009
Keywords
Phytoremediation; Pollution level; Cadmium; Lead; Mulberry; Paddy soil
Funding
- China Agriculture Research System [CARS-18-SYZ12]
- Science and Technology Planning Project of the Land and Resources Department in Hunan Province [2014-06]
- project of sericulture germplasm resources diversification application R&D innovation team [2017XC01]
Ask authors/readers for more resources
Mulberry tree (Morus alba L.) is an effective material available for the remediation and utilization of heavy metal contaminated soil. A three-year experiment was carried out to assess the effects of three mulberry varieties under three planting densities on the removal of Cadmium (Cd) and lead (Pb). Meanwhile, the pollution levels of the farmland by Cd and Pb were also evaluated. Results showed that the soils were strongly to extremely polluted by Cd and moderately to strongly contaminated by Pb. The biomasses of mulberry trees were increased with the increasing planting densities both in 2014 and 2015, except the biomasses of Nongsang 14 in the planting density 30,000 plants/hectare (ha) in 2014. The total biomasses of Yuesang 11 were the highest among the test three cultivars. In addition, the concentrations of Cd and Pb in the root were much higher than those in the stem or branch or leaf. One hectare mulberry shoots could extract 1.92-7.89 g Cd and 9.70-83.58 g Pb every year, respectively. The three mulberry varieties were all not hyperaccumulators for Cd or Pb because both the bio-concentration factors (BCFs) and translocation factors (TEs) were less than 1. These results indicated that mulberry trees can be used as an alternative plant to make use of heavy metal polluted paddy soils and Yuesang 11 may be regarded as a candidate species for phytostabilization of Cd and Pb, with the planting density of 30,000 plants/ha.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
Article
Ecology
Development and testing of a mechanistic model for wetland treatment of neutral and polar organic contaminants in oil sands process-affected water
Alexander M. Cancelli, Frank A. P. C. Gobas
Summary: A mechanistic model was developed to assess the removal efficiency of pollutants in a wetland system, particularly in oil sands process-affected water (OSPW). The model simulated wetland mechanisms of chemical removal and showed that sustained wetland treatment is feasible. It is a helpful tool to evaluate the feasibility of treatment systems and to assess trade-offs in wetland design and operation.
ECOLOGICAL ENGINEERING (2024)
Article
Ecology
Analyzing vegetation recovery and erosion status after a large Landslide at Mt. Hakusan, Central Japan
Prakash Singh Thapa, Hiromu Daimaru, Seiji Yanai
Summary: This study assessed the vegetation recovery and erosion condition in a landslide area in central Japan. The results show that the upper slope, where reforestation activities were implemented, has seen significant vegetation recovery and no significant erosion, while the lower slope lacks vegetation and has experienced continued erosion.
ECOLOGICAL ENGINEERING (2024)
Article
Ecology
The role of calcium and alkalinity on phosphorus removal by submerged aquatic vegetation in hardwater wetlands
Mike Jerauld, Forrest Dierberg, Thomas DeBusk, Scott Jackson, Kevin Grace, John Juston
Summary: The Everglades Stormwater Treatment Areas (STAs) are constructed wetlands built to remove phosphorus (P) from agricultural and urban runoff in support of Everglades restoration. Research shows that the levels of calcium (Ca) and alkalinity (Alk) have an impact on phosphorus removal in these wetlands.
ECOLOGICAL ENGINEERING (2024)
Article
Ecology
Effects of increasing complexity in biogeochemistry and hydrology on variability of total phosphorus concentration in models of a low flow subtropical wetland
Kalindhi Larios, Stefan Gerber, Rafael Munoz-Carpena, Patrick Inglett, K. Ramesh Reddy, Michael Chimney
Summary: This study modeled the phosphorus biogeochemical dynamics in one of the best performing Everglades treatment wetlands and found that the complexity of the hydrological system significantly affected the simulated water column P concentration. The modeling tool developed in this study can guide future data collection and optimization efforts for treatment wetlands in the Everglades.
ECOLOGICAL ENGINEERING (2024)
Article
Ecology
An analysis of long-term Everglades Stormwater Treatment Areas performance using structural equation models
Jing Hu, Benjamin Baiser, R. Thomas James, K. Ramesh Reddy
Summary: This study examined the long-term phosphorus retention in Stormwater Treatment Areas (STAs) and identified the factors influencing their performance. The results showed that the operational performance of STAs improved over time. There were notable differences among individual STAs, with the co-precipitation of phosphorus with calcium playing a critical role in one of the STAs. This highlights the complexity of phosphorus removal in STAs and the need for site-specific management strategies.
ECOLOGICAL ENGINEERING (2024)
Article
Ecology
Biogeochemical response of subtropical treatment wetlands to different flow conditions
Odi Villapando, K. R. Reddy, J. King
Summary: The biogeochemical response to different flow conditions within two parallel flow-ways in Everglades Stormwater Treatment Area (STA)-2 was studied. It was found that there was a gradual decrease in the total phosphorus (TP) concentration from inflow to outflow for both emergent aquatic vegetation (EAV) and submerged aquatic vegetation (SAV) dominated systems, with EAV showing a higher reduction rate. Significant increase in TP concentration was observed in the SAV system under no flow condition, possibly due to the production of particulate phosphorus (PP) through various mechanisms.
ECOLOGICAL ENGINEERING (2024)
Share Paper
