نتایج جستجو برای: soil water regimes
تعداد نتایج: 728514 فیلتر نتایج به سال:
Drought resistance of Ailanthus altissima (Mill.) Swingle is a major factor underlying the impressively wide expansion of this species in Europe and North America. We studied the specific mechanism used by A. altissima to withstand drought by subjecting potted seedlings to four irrigation regimes. At the end of the 13-week treatment period, soil water potential was -0.05 MPa for well-watered co...
This experiment was conducted to evaluate drought tolerance of selected lines from local populations of safflower (Carthamus tinctorius L.) at the Research Farm of Isfahan University of Technology in 2002. In this study, the 12 selected safflower lines from different local populations along with two exotic cultivars and a local population were evaluated at two different irrigation regimes, usin...
This experiment was conducted to evaluate drought tolerance of selected lines from local populations of safflower (Carthamus tinctorius L.) at the Research Farm of Isfahan University of Technology in 2002. In this study, the 12 selected safflower lines from different local populations along with two exotic cultivars and a local population were evaluated at two different irrigation regimes, usin...
We develop a framework that casts the point water-vegetation dynamics under stochastic rainfall forcing as a continuous-time random walk (CTRW), which yields an evolution equation for the joint probability density function (PDF) of soil-moisture and biomass. We find regime shifts in the steady-state PDF as a consequence of changes in the rainfall structure, which flips the relative strengths of...
Free and uncontrolled pasture grazing by animals may decrease soil aggregate stability through reductions in plant cover and subsequent soil organic C, and trampling. This could expose the soil surface layer to degradation and erosion. The objective of this study was to determine the influence of pasture management (free grazing, controlled grazing and long-term non-grazing regimes) on aggregat...
Organic amendments are believed to help increase the soil carbon storage and therefore improve quality, which may be important in context of climate change. However, added value organic for farmers must clearly demonstrated order convince them utility their use. The aims this study were: (i) investigate impact on maize compost vermicompost combined with two levels (negligible significant) plant...
This manuscript describes a modeling study of forest water fluxes and biomass changes under different rainfall regimes. The model was developed based on FORMIND with a new extension of forest hydrological cycle added. They run the model for both a young and an old-growth stands of temperate rainforest under current and future climate scenarios and compared the modeling results with measurements...
This manuscript describes a modeling study of forest water fluxes and biomass changes under different rainfall regimes. The model was developed based on FORMIND with a new extension of forest hydrological cycle added. They run the model for both a young and an old-growth stands of temperate rainforest under current and future climate scenarios and compared the modeling results with measurements...
Hydrologic processes in the pinyon-juniper woodlands of the western region of the United States are variable because of the inherent interactions among the occurring precipitation regimes, geomorphological settings, and edaphic conditions that characterize the ecosystem. A wide range of past and present land-use practices further complicates comprehensive evaluations of these hydrologic process...
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