Browsing: Nigeria dryland ecosystems

Soil moisture is the water content of the soil, it can be expressed in terms of volume or weight. Soil moisture measurement can be based on in situ probes for example capacitance, probes, neutron probes or remote sensing methods. Water that enters a field is removed from a field by runoff, drainage, evaporation or transpiration. Whereas carbon is a chemical element that has a symbol C and atomic number of 6, it is non-metallic and tetravalent, meaning that its atoms are able to form up to 4 covalent bonds due to its valence shell exhibiting 4 electrons, it belongs to group 14 on the periodic table and makes up about 0.025 percent of earth crust.