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Soil quality refers to the condition of soil based on its capacity to perform ecosystem services that meet the needs of human and non-human life. [1] [2] [3] [4]
Copenhagen Consensus is a project that seeks to establish priorities for advancing global welfare using methodologies based on the theory of welfare economics, using cost–benefit analysis. It was conceived and organized around 2004 by Bjørn Lomborg , [ 1 ] the author of The Skeptical Environmentalist and the then director of the Danish ...
Phosphorus is a primary factor of soil fertility as it is an element of plant nutrients in the soil. It is essential for cell division and plant development, especially in seedlings and young plants. [10] However, phosphorus is becoming increasingly harder to find and its reserves are starting to be depleted due to the excessive use as a ...
Iversen, J. (1952/53) Origin of the flora of Western Greenland in the light of pollen analysis. Oikos, 4, 85-103. Iversen, J. (1953) Radiocarbon dating of the Alleröd period. Science, 118 (3053), 4–6. Iversen, J. (1953) Origin and postglacial development of the flora of West Greenland in the light of pollen analysis. Proceedings of the ...
It takes decades [116] to several thousand years for a soil to develop a profile, [117] although the notion of soil development has been criticized, soil being in a constant state-of-change under the influence of fluctuating soil-forming factors. [118] That time period depends strongly on climate, parent material, relief, and biotic activity.
Soil microbial communities experience shifts in the diversity and composition during dehydration and rehydration cycles. [5] Soil moisture affects carbon cycling a phenomenon known as Birch effect. [6] [7] Temperature variations in soil are influenced by factors such as seasonality, environmental conditions, vegetation, and soil composition.
In The Soil Resource, Origin and Behaviour (1980), Jenny redefined the soil forming factors as state variables and extended the effects to ecosystem properties. Parent material and relief define the initial state for soil development, regional climate, and potential biota, determine the rate at which chemical and biological transformations ...
The activity of soil is the ratio of the plasticity index to the clay size fraction. If activity is less than 0.75, the soil is inactive. If activity exceeds 1.4, then the soil is termed active. If activity lies within the above values, then the soil will be moderately active. [10]