Sentences with phrase «deeper soils»

Because trees are larger and heavier than other plants, they need a much deeper soil system for their roots.

At the same time, organic carbon frozen in deeper soil layers will decompose and enter the atmosphere.

Another advantage bioenergy grasses and switchgrasses have over corn is their deep root system which allows them to draw water and nutrients from deeper soil levels and allows them to be more resilient in poor growing seasons.

The forests provide an explanation as they remain green through the dry season by accessing deep soil moisture reserves (Juarez et al. 2007, Myneni et al. 2007).

Limited water availability in soil - atmosphere exchange and in any fluid movement from deeper soil layers could explain how salt hydration is water - limited on Mars.

Thus, they may be exposed to higher pesticide concentrations than adults, because juveniles are unable to escape into deeper soil layers.

been associated with any or all of a number of mechanisms, including persistent flammability, inhibited recruitment of big trees in locations where their early growth was not sheltered so that their roots could reach deep soil water, persistent shrub vegetation types, etc..

Deeper soils not only experience less extreme seasonal variations in temperature, but the changes that do occur lag farther behind those of shallower soils.

Projected global warming will likely decrease the extent of temperate drylands by a third over the remainder of the 21st century coupled with an increase in dry deep soil conditions during agricultural growing season.

The boundary of the closed canopy forest with transitional forest or savanna (right) corresponds closely to 50 percent drought probability, consistent with the requirement to recharge deep soil reservoirs every 2 years as discussed by Nepstad et al. (2007).

Specifically, these results predict a loss of 15 to 30 per cent of temperate grasslands by the end of the century with a substantial increase in deep soil drought conditions.

It is principally due to the transfer of the seismic motion from hard deep soils to soft superficial soils and to effects of seismic energy focalization owing to typical geometrical setting of the deposits.

However, even if net accumulation of biomass continues for a very long time (and produces very deep soils), the rate of accumulation is going to be steady at best — it is certainly not going to increase as the forest matures.

RC: Nebraska has a lot of grassland with deep soil.

The podium rooftops feature deep soil intensive green roofs and accessible terraces, creating a lush landscaped outdoor amenity for employees, while also reducing stormwater runoff and providing additional thermal insulation.

Several properties of sedimentary - derived soils relative to basalt - derived soils may lead to greater water permeability and infiltration, including lower clay content, extensive fracturing, and deeper soil horizons [30], [43], [44].

The extra cost of installing such systems in deeper trenches may be outweighed by the gain in thermal performance, since deeper soils have less pronounced seasonal temperature changes and are thus closer to room temperature, which reduces the work load of the heat pump units.

The key result from our analysis is that although precipitation variability is statistically not predictable beyond 1 — 2 years in our model, soil moisture variations at deeper soil levels and total water storage (including aquifers) in the northern US and southern US / Mexico regions can be predicted up to a decade ahead.

One person once responded to my argument by pointing out how deep the soil is in permafrost and muskeg areas, and I replied by asking if they were thus proposing to grow wheat vertically.

«The hydrological impacts (depleted streams, depleted deep soil moisture reserves, reservoirs and ground water) are the last to emerge going into drought and they will be the last to recover coming out.»

Remediation techniques like in - situ treatment of deep soil contamination and groundwater are a bit trickier and require an experienced environmental engineer to design an appropriate system.

The scientists included nitrogen dynamics in the model because, as permafrost thaws, nitrogen trapped in deeper soil layers (below one meter underground) will decompose and become available to fertilize plants.

Wild and Free «Intensive» roofs have deeper soil levels and generally require more attention; plants on an intensive roof garden will need frequent watering and looking after, though they offer more flexibility for a wider range of plant life.

Methane hydrates are another form of frozen carbon, found in deeper soils.

Here's how Winemaker Mike Smith responded to my plea to define Rutherford dust: «In Rutherford, the deeper soils and microclimates create longer growing seasons and «hang time» that seem to round out the tannins in a soft, dusty style.

Sauvignon blanc is the main white grape, and it's mainly planted in the deeper soils along the Napa River in the middle of the region.

In retrospect agriculture in Australia was always going to be challenging and problematic, given the country's relative lack of good, deep soils, together with its harsh climate and propensity for drought and floods.

Susan Lorenz studied soil, sediment, ground and surface water samples, and said that although she found lead present in surface soils, it had not migrated to deeper soils or ground water.

To their surprise, the researchers found that the samples from the thermokarst sites had lower levels of colored dissolved organic matter than did reference sites, suggesting that the carbon in the deeper soils exposed by thermokarst failure is significantly different from the carbon draining from the topmost, active layer of the permafrost, the team reports in the Proceedings of the National Academy of Sciences.

One of the major conclusions drawn from this study, with potential far - reaching implications, is that even mild air warming of less than 1 °C is triggering greenhouse gas production at depth: enhanced input of labile organic substances from the soil surface, transported to deeper soil layers via leaching, greatly influences arctic greenhouse gas biogeochemistry.

These soils typically don't hold a lot of carbon, but the researchers believe warming has encouraged soil nematodes and mites, which help decompose leaves and other plant matter, to make their way to the deeper soils.

This redistribution of soil carbon storage raises questions of whether the balance provided by larger plants will stand in the long term or whether the more active microbes detected in the deeper soils will eventually offset the increased carbon in those deeper soils.

It's all about water availability: Access to deeper soil layers typically increases the total amount of soil water available to plants which in turn favors tropical rainforest with its evergreen trees.

What is the mineral content of the deepest soil?

Back at the farm, the kids felt a newfound sense of connection to the site, and their next round of questioning became more sophisticated: What would happen if we used the deeper soils to germinate seeds?

Deep, deep soils.

Previous research has shown that soil moisture plays a critical part in both permafrost thaw and carbon exchange with the atmosphere — as the permafrost breaks down, surface water may drain away to deeper soil layers, leaving the topsoil high and dry.

One example of this phenomenon is that condensation can occur on the inner face of the lower portions of wall during the spring, if exterior dewpoints are rising but the deep soil is still cool from the winter.

We find a close agreement between the CESM - based hindcasts and the Markov model, indicating that the largest contribution to the predictive skill of soil water on interannual to decadal timescales in CESM can be attributed to the damped persistence, which is partly governed by the evapotranspiration (Delworth and Manabe 1988), the total runoff, and the diffusion of soil moisture into the deeper soil levels as shown in the Eq.

Koven CD, Lawrence DM, Riley WJ (2015) Permafrost carbon − climate feedback is sensitive to deep soil carbon decomposability but not deep soil nitrogen dynamics.