AN ENVIRONMENTAL QUALITY INFORMATION SYSTEM USING GEOMATICS

Book excerpt: 1. INTRODUCTION: The term "Environment" is the most vital for mankind. It is the natural world, which is affected by human activities, as whole or in a particular area geographically. It consists of parameters such as water, soil and air. One Oxygen and two hydrogen atoms combined by covalent bond in each molecule of water. Water is the transparent and no colour material which is main constitutent in Earth's surface. Water is one of the essential components for living organisms to live on Earth. Water covers 71% of Earth's surface. Out of which 96.5% of water is saline. only 1.7% of water is groundwater and 1.7% of water is in the form of ice and glaciers.0.001% of water is in the form of vapour and in air. So very less percentage of water is in pure form. It is needed to safegaurd the water from pollution for next generations. The combination of presence of organic matter, minerals, gases, liquids, and organisms which support life on Earth is termed as Soil. The main functionalities of soil on Earth are plant growth, water storage, supply and purification. Finally another parameter left out in this study is air. It is the combination of many gases and dust particles on Earth's atmosphere. It is the mixture about 78% of nitrogen, 21% of oxygen, 0.9% of argon,0.04% of carbon-di-oxide and rest of other gases.