The calculation of Ecological Footprint (EF) on the basis of Input-Output model (I-O model) was advanced by Bicknell, and modif ied and improved by Ferng who co
Plant competition has been recognized as one of the most important factors influencing the structure and function of lake ecosystems. Competition from plants of
Recent development in the use of the environmental radionuclide caesium-137 for documenting rates and patterns of soil redistribution on the cultivated or uncul