Preface “The Soil is Essential of Nature and Properties “Soil provides ecosystem service critical for life, soil acts as a water filter and growing medium, provides habitat for billions of organisms, contributing to biodiversity: and supplies most of the antibiotics used to fight diseases. Humans use soil as a holding facility for solid waste, filter for wastewater and foundation for our cities and towns. Finally, soil is the basis of our nation’s agro ecosystems which provides with feed, fiber, food and fuel. Soil is a mixture of minerals, organic matter, gases, liquids, and countless organisms that together support life on Earth. Soil is a natural body called the pedosphere which has four important functions: it is a medium for plant growth; it is a means of water storage, supply and purification; it is a modifier of Earth's atmosphere; it is a habitat for organisms; all of which, in turn, modify the soil. “Soil is called the Skin of the Earth” This book will certainly be a very handy reckoned not only to students and teachers of this subject but also to those who want to know more about the basic concepts of Physicochemical Studies of Lake Soil in and Around Ahmadabad and different type of locations forms. Dr. Satish S.Patel Dr. Sanjay D. Vediya