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5 wrz 2023 · Soil moisture is a state variable of the land that crosses the interfaces of several disciplines, including meteorology, hydrology, climatology and ecology. Soil moisture content controls the partitioning of net radiation at the land surface between sensible and latent heat fluxes.
Define and compare gravitational water, plant available water, and unavailable water. Relate each to the different pore sizes (macro-, meso-, and micro-). Identify the matric potential values (soil water potential) for saturation, field capacity, wilting point, air dry, and oven dry soil.
6 paź 2021 · We introduce here SOIL-WATERGRIDS, a new dataset of dynamic changes in soil moisture and depth of water table over 45 years from 1970 to 2014 globally resolved at 0.25 × 0.25 degree...
the basic soil parameters that affect water availability, retention, storage capacity, and movement of water through the soil, and (b) the response of rice and non-rice crops to different rates and timing of water application.
Define and compare gravitational water, plant available water, and unavailable water. Relate each to the different pore sizes (macro-, meso-, and micro-). Identify the matric potential values (soil water potential) for saturation, field capacity, wilting point, air dry, and oven dry soil.
Bulk density is an indicator of soil compaction and soil health. It affects infiltration, rooting depth/restrictions, available water capacity, soil porosity, plant nutrient availability, and soil microorganism activity, which influence key soil processes and productivity.
To understand changes in soil moisture we must start with an understanding of the sources and losses of water. Sources of water to the biosphere from the atmosphere include precipitation, snow (in the later form of melt water), condensation/dew, fog interception and stemflow.
