The volume predictions utilize basin gradient, soil burn severity extent, and storm rainfall as primary factors.
From each runoff plots, the slope gradient, soil moisture, soil temperature, electric conductivity and ground cover by above-ground biomass were recorded.
Across this gradient soil N levels were stronger predictors of enzyme activities than soil C or pH, which drive enzyme activities globally.
Along the latitudinal gradient, soil samples were collected from north (Hailun) to south (Gongzhuling) down to a depth of 100 cm with intervals of 0 20, 20 40, 40 60, 60 80, and 80 100 cm.
This study had two goals: to map the current status of hiking trail conditions in two popular tourist destinations of the southern highlands, Þórsmörk and Fjallabak Nature Reserve FNRR); and to examine the relationship between trail condition assessment and local physical properties, such as elevation, gradient, soil type, and vegetation cover, in GIS.
To obtain a relatively stable water moisture gradient, soil relative water content (SRWC), i.e., the ratio between present soil moisture and field capacity, was divided into 5 levels: well-watered (WW, 70-80%), light drought (LD, 60-70%), moderate drought (MD, 50-60%), severe drought (SD, 35-50%), and extreme drought (ED, 25-30%), respectively.
This was expected since the vertical gradient soils were in closest proximity to the amendment injection line.
The 1.82 m down-gradient soil had the lowest fraction of adsorbed P; this is likely due to a lack of amendment flow to this area of the site.
However, even though the hydrolysis rate is expected to be slow, there is still evidence that hydrolysis is occurring: there is an increase in labile extractable ortho-P between sampling points and there is a reduction in adsorbed P of the up-gradient soil after the second soil core sampling.
In this study, we determined the changes of plant growth and photosynthetic capacity as plants were subjected to soil moisture gradients (soil relative water content 20%-90 20%-90
The tree composition of a forest is determined by a moisture gradient involving soil aeration, soil nutrient supply, and microclimatic features (38 ), and this gradient functions as a continuum.
