These are the kinds of bamboo that can be troublesome to property owners — the kinds with runners — but that feature is exactly what makes them possibly valuable to a place like the Savannah River Site.
The reason is the remediation of waste sites, such as old settling basins or waste disposal areas. A common approach includes capping such sites to prevent rain from seeping through the waste, potentially spreading contamination.
"We are looking at numerous kinds of vegetation to plant on closure caps," said Dr. Eric Nelson, of SRNL's Environmental Analysis Section. "The vegetation is there to prevent erosion and extract water from the cap. The caps are generally soil with clay and perhaps artificial layers below. Vegetation on a cap has to be quick-growing, shallow-rooted so as not to penetrate the layers, densely rooted, cold hardy, drought tolerant, and able to thrive in full sun. It also needs to be good at preventing invasion of other plants, especially pines. We thought bamboos would have good potential."
Of the thousand or so species of bamboo, SRNL selected two of the smaller species with runners for assessment (P. bissetii and P. rubromarginata). In 1991, they were planted in a one-acre plot about ten feet apart.
The next step was ... to ignore them. Dr. Nelson next assessed the nursery 14 years later.
"The bamboo grew in well and there were relatively few other plants that invaded the plots. The bamboo was especially effective in keeping out pines," he said. "We did another assessment late last year with similar results. Bamboo, especially P. bissetii, is a good candidate for use on a closure cap."
Dr. Nelson said that a closure cap vegetative cover will require more study than this nursery. "Soils are important and moisture balance and nutrient cycles are also important. We also need to understand more fully the early growth and establishment of the bamboo and its performance in closure cap conditions. But it seems promising at this time, pending further research."
SRS has a number of closure sites with caps now, but in the future there will be many more, including caps over closed waste tanks. Their success is a matter of physical, environmental and regulatory importance. "This nursery has helped us define future research needs and operational issues," Dr. Nelson said.
SRNL is DOE's applied research and development national laboratory at the Savannah River Site (SRS). SRNL puts science to work to support DOE and the nation in the areas of environmental management, national and homeland security, and energy security. The management and operating contractor for SRS and SRNL is Savannah River Nuclear Solutions, LLC.
Bruce Cadotte | EurekAlert!
Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University
New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien
Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
Topological insulators are currently the hot topic in physics according to the newspaper Neue Zürcher Zeitung. Only a few weeks ago, their importance was...
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
09.12.2016 | Life Sciences
09.12.2016 | Ecology, The Environment and Conservation
09.12.2016 | Health and Medicine