Ecology
San Fransisco Urban Forest Plan
Few Pages of Urban Forest Plan prepared by San Fransisco City Authorities
This can be an ideal method for planning tree plantation scemes in Indian cities.
Forests
Forests are a key element of our terrestrial ecological systems. They comprise tree-dominated vegetative associations with an innate complexity, inherent diversity, and serve as a renewable resource base as well as a habitat for a myriad of life forms.
Sulphur cycle
Even though a few organisms gain their Sulphur requirements in such organic forms as amino acids, inorganic sulfate is the major source of biologically significant sulfur, being absorbed through plant roots.
Energy flow in Ecosystem
Biological activity involves the use of energy that comes from the sun. This solar energy is transformed from the radiant to the chemical form in photosynthesis and from chemical to mechanical forms and heat forms in cellular metabolism.
Phosphorous cycle
Plants require inorganic phosphate for their nutrition in typical mineral cycle. This phosphate is transferred to consumers and decomposers as organic phosphate.
