Sentences with phrase «soil water responses»

«The stability of the rate of change justifies using higher carbon dioxide enrichment levels to interpret soil water responses to currently observed carbon dioxide enrichment,» Wang said.

Determining the mechanisms of stronger soil water responses in drylands will require further investigation.

Not exact matches

«Importantly, the observed response lends weight to the hypothesis that any additional soil water in the root zone is then available to facilitate vegetation growth and greening under enhanced carbon dioxide,» Wang said.

The researchers believe the greening is a response to higher atmospheric carbon dioxide inducing decreases in plant stomatal conductance — the measure of the rate of passage of carbon dioxide entering, or water vapor exiting, through the stomata of a leaf — and increases in soil water, thus enhancing vegetation growth.

Gentine's team is the first to isolate the response of vegetation from the global warming total complex response, which includes such variables for the water cycle as evapotranspiration (the water evaporated from the surface, both from plants and bare soil) soil moisture, and runoff.

«We designed a project to quantify the growth of Hibiscus acetosella «Panama Red» in response to various soil water content thresholds,» explained Bayer.

The original proposal of a 15 inch cap of borrow soil, with agricultural limestone and a bactericide below and revegetation by shallow - rooting plants was determined to be «inadequate,... at the least, an additional layer must be added that will act as a barrier for water, plant roots systems and burrowing animals».20 In response Cyprus - Amax proposed, in January 1995, a typical cap section which added a 30 - mil PVC liner overlaid by a geoweb drainage mat with a fabric cover below the 15 inch soil cap.

Above — And Below - Ground Responses of C3 - C4 Species Mixtures to Elevated CO2 and Soil Water Availability.

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.

Based on 1705 field measurements from 21 distinct sites, a consistent and statistically significant increase in the availability of soil water (11 %) was observed under elevated CO2 treatments in both drylands and non-drylands, with a statistically stronger response over drylands (17 % vs. 9 %).

In order of seniority, the seven feedbacks that seem outstanding are: Water vapour — rising by ~ 7 % per 1.0 C of warming; Albedo loss — due mostly to cryosphere decline; Microbial peat - bog decay — due to rising CO2 affecting ecological dynamics; Desiccation of tropical and temperate soils — due to SAT rise and droughts; Permafrost melt — due to SAT rise plus loss of snow cover, etc; Forest combustion — due to SAT rise, droughts, pest responses, etc; Methyl clathrates [aka methane hydrates] now threatened by rising sea - temperatures, increased water column mixing, Water vapour — rising by ~ 7 % per 1.0 C of warming; Albedo loss — due mostly to cryosphere decline; Microbial peat - bog decay — due to rising CO2 affecting ecological dynamics; Desiccation of tropical and temperate soils — due to SAT rise and droughts; Permafrost melt — due to SAT rise plus loss of snow cover, etc; Forest combustion — due to SAT rise, droughts, pest responses, etc; Methyl clathrates [aka methane hydrates] now threatened by rising sea - temperatures, increased water column mixing, water column mixing, etc..