Sentences with phrase «soil water potentials»

The oak trees, on the other hand, were able to transpire, albeit at low rates, under very dry soil conditions (soil water potentials below -4.0 MPa).

Not exact matches

In principle, AFSA supports the development of an online tool to enable a simple assessment of the potential impacts of animal industries to determine permit requirements, acknowledging the complexity of information needed to make such an assessment (water supply catchments, significant native vegetation, soil type, rainfall, proximity to settlements...).

Organically - managed soils have a high potential to counter soil degradation as they are more resilient both to water stress and to nutrient loss.

This scenario is even more troubling from a food safety perspective: In addition to potential hygiene violations in Chinese slaughtering and processing plants, chickens raised on China's polluted soil, air and water could well be adversely affected by that nation's severe environmental degradation.

Also at 7 p.m., the Long Island Clean Air Water and Soil and the North and Central Merrick Civic Association host a meeting to discusses potential legal and political action that will drastically cut local water bills, Merrick Golf Course Clubhouse, 2550 Clubhouse Rd., MerWater and Soil and the North and Central Merrick Civic Association host a meeting to discusses potential legal and political action that will drastically cut local water bills, Merrick Golf Course Clubhouse, 2550 Clubhouse Rd., Merwater bills, Merrick Golf Course Clubhouse, 2550 Clubhouse Rd., Merrick.

Farmers can try planting a field even when it is wet, but using heavy farm equipment compacts soil and decreases its ability to hold water, diminishing yield potential.

In this sense, rewilding holds the potential to stabilize far more than natural areas in peril: it can enhance and protect national security by sequestering carbon and safeguarding fresh water, fertile soils, cleaner air.

For example, the most negative water potential in a tree is usually found at the leaf - atmosphere interface; the least negative water potential is found in the soil, where water moves into the roots of the tree.

Air quality is of increasing concern to China's stability - obsessed leaders, anxious to douse potential unrest as a more affluent, urban population turns against a growth - at - all - costs economic model that has besmirched much of the country's air, water and soil.

You can put sensors into the soil, or you can do satellite imaging and mapping, but you never really know what a particular plant is detecting as the water potential.»

Living up to all the ambitions of its official name, OSIRIS - REx would explore the origins of asteroids and thus the solar system itself, connect spectral colors observable from Earth to specific minerals on the asteroid, identify potential resources such as water for rocket fuel, help evaluate the threat of asteroids to Earth, and return some regolith (asteroid soil) for detailed analysis.

Greenpeace argued that while it is not currently possible to quantify the exact risks, any CO2 leakage from underground has the potential to affect the surrounding environment, raising the dangers of polluted soil and water, and even suffocation.

«In severe drought conditions, which are expected to increase with climate change, organic farms have the potential to produce high yields because of the higher water - holding capacity of organically farmed soils,» Reganold said.

Health officials from South Korea, Indonesia, Thailand, Malaysia, Singapore, and the Philippines are beginning to screen food imported from Japan for radiation, and several other Southeast Asian countries are expressing concern over the potential for contamination of soil and water that could affect food sources.

The apparent rise in evapotranspiration — the process by which water is transferred from the land to the atmosphere by evaporation from plants and soil — is increasing potential drought risk with rising temperature trends, especially during periodic drought cycles that have been linked with strong El Nino events.

Air quality in cities is of increasing concern to China's stability - obsessed leaders, anxious to douse potential unrest as more affluent citizens turn against a growth - at - all - costs economic model that has polluted much of the country's air, water and soil.

Air quality in cities is of increasing concern to China's stability - obsessed leaders, anxious to douse potential unrest as a more affluent urban population turns against a growth - at - all - costs economic model that has besmirched much of the country's air, water and soil.

This focus on the potential ecological effects from pharmaceuticals largely began as a result of a growing number of technical papers published from the late 1990s until the present that have reported the detection of low levels of pharmaceuticals in wastewater treatment plant effluent, manufacturing plant effluent and surface water and, to a more limited extent, groundwater, drinking water, soils, and sediment.

However, in many of the same places, actual evapotranspiration inferred from surface water balance exhibits an increase in association with enhanced soil wetness from increased precipitation, as the actual evapotranspiration becomes closer to the potential evaporation measured by the pans.

Further understanding how land formation techniques (leveling, grading, and raised - bed construction) for improved water and nutrient management and efficiencies affect soil structure and the behavior of nutrient and water dynamics is required to develop refined and integrated management practices and realize the potential of high - value non-rice crops.

«We hypothesized that soil amendment using lignite - derived humic substances would alter plant gas exchange, root growth and soil microbial activity, which in turn might mitigate potential crop losses under water - stress conditions,» he said.

By looking for evidence of water, carbon, and other important building blocks of life in the Martian soil and atmosphere, SAM will help discover whether Mars ever had the potential to support life.

DOERR SH, FERREIRA AJD, WALSH RPD, SHAKESBY RA, LEIGHTON - BOYCE G E COELHO COA Soil water repellency as a potential parameter in rainfall - runoff modelling: experimental evidence at point to catchment scales from Portugal (2003) Hydrological Processes,, vol.

The sequestration potential of a soil depends on the vegetation it supports, its mineralogical composition, the depth of the solum, soil drainage, the availability of water and air, and the temperature of the soil environment.

Changes to the temperature and pressure of permafrost soils (and ocean waters) could lead to methane, a gas with a much stronger greenhouse warming potential than carbon dioxide, being released.

Organic farming and permaculture have the potential to help India's farmers adapt to climate change by making crops hardier and by restoring soil and water health

While organic agriculture practices result in higher soil organic matter (SOM) contents and, in turn, higher nutrient - and water - supplying potential to crops, transition to organic farming typically involves a lag time of several years in which yields can suffer and input demands increase as rebuilding soil microbial communities compete with crops for nitrogen and other available nutrients (Simmons and Coleman, 2008).

potential production estimated production of a crop under conditions when nutrients and water are available at optimum levels for plant growth and development; other conditions such as daylength, temperature, soil characteristics, etc., determined by site characteristics

Potential production - Estimated crop productivity under non-limiting soil, nutrient and water conditions.

Based on international standards (ISO 14025), EPDs have worldwide applicability and include information about product environmental impacts such as resources, energy use and efficiency, global warming potential, emissions to air, soil and water, and waste generation.

Samuelson et al. -LRB-[2004]-RRB- showed a lag effect in the response of foliage to large changes in precipitation by correlating current growth of loblolly pine (Pinus taeda) with the previous year's LAI, and Sperry et al. -LRB-[2002]-RRB- explained how combinations of soil texture and xylem can impose «hydraulic limits» on the ability of the foliage to maintain adequate pressure potentials to support a continuous water column.

Methane hydrates — methane molecules trapped in frozen water molecule cages in tundra and on continental shelves — and organic matter such as peat locked in frozen soils (permafrost) are likely mechanisms in the past hyperthermals, and they provide another climate feedback with the potential to amplify global warming if large scale thawing occurs [209]--[210].

Our study has identified soil water predictability even beyond the interannual timescales, thus extending the potential predictive range of hydrological conditions over North America to almost a decade.

The CESM CTL and hindcast experiments are further used to determine the interactions between soil water, fire, and vegetation and potential long - term predictability emerging from these interactions.

We have evaluated the potential decadal predictability of variations in soil water, vegetation, and fire frequency over North America using the low resolution version of the earth system model CESM.

The long - term potential predictability of soil water variations in combination with the slow regrowth of vegetation after major disruptions leads to enhanced predictability on decadal timescales for vegetation, terrestrial carbon stock, and fire frequency, in particular in the Southern United States (US) / Mexico region.

Although water storage and soil moisture are difficult to observe with sufficient spatial coverage, observational reconstructions of land hydrological variables and fire cycles (Maurer et al. 2002; van den Dool et al. 2003; Fan and van den Dool 2004; Littell et al. 2009; Wada et al. 2010) may still provide useful information to determine potential longer - term predictabilities.

This integration of white noise variability (Hasselmann 1976) leads to enhanced soil water variability at lower frequencies and potential longer - term predictability (Delworth and Manabe 1988).

Also, why is there no mention at all of the potential of using biochar techniques to sequester organic carbon safely in soils, while at the same time enhancing their fertility and ability to hold water?

The project was commissioned by the United Nations International Fund for Agricultural Development (IFAD) in order to identify ~ 500 village units that are vulnerable to flash flooding, soil erosion, water scarcity and reduced crop potential.

The lower relative humidity and increased temperatures that would result from potential reductions in fog and low cloud cover could increase plant evapotranspiration rates, raise soil water deficits, and accelerate risks of forest fire.

Criteria Description Fish Toxicity Measure of the acute toxicity to fish (both saltwater and freshwater) Daphnia Toxicity Measure of the acute toxicity to Daphnia (invertebrate aquatic organisms) Algae Toxicity Measure of the acute toxicity to aquatic plants Persistence / Biodegradation Rate of degradation for a substance in the environment (air, soil, or water) Bioaccumulation Potential for a substance to accumulate in fatty tissue and magnify up the food chain Climatic relevance Measure of the impact a substance has on the climate (e.g., ozone depletion, global warming, etc.) Other Any additional characteristic (e.g., soil organism toxicity, WGK water classification, etc.) relevant to the overall evaluation but not included in the previous criteria 1.3.3 Material Class Criteria The following material classes are flagged due to the concern that at some point in their life cycle they may have negative impacts on human and environmental health.

The potential health implications of this pipeline are enormous and far reaching — from spills poisoning our water and soil, to the public health impacts of a warming global climate — the impacts will likely be devastating.»

The EPA was recently tasked by the federal government to report on the potential impacts of hydraulic fracturing on drinking water and soil resources.

The greatest potential hazard from a leaking UST is that its contents (petroleum or other hazardous substances) can seep into the soil and contaminate groundwater, the source of drinking water for nearly half of all Americans.