Mineral Nutrition: Sources of Nutrients for Land Plants from Outside the Pedosphere

摘要: From the beginning of colonization land surface by plants, rain must have been a source nutrients. There are global cycles in both water and salts oceans; it takes period about 80 million years to transport ocean salt, means sprays aerosols, over edges continents (HOLMES 1937) 5000 water. In addition ocean, chemical transformations nitrogen atmosphere geological upheavals such as volcanoes can provide wide variety plant nutrients gaseous, dissolved, particulate forms. The rates at which these deposited on highly variable depend climate prevailing wind direction. At most, however, they support only very slow growth. Plant communities, raised Sphagnum bogs, almost totally dependent for their nutrients, intrinsically low biomass production (PEARSALL GOREHAM 1956; PAKARINEN 1978).