GIS & Remote Sensing

Mapping Through Remote Sensing Mapping is an important component for management of land resources. Remote sensing data can be used to create information in the form of mapping of any given area.  Natural features such as such as forest, grass land, water bodies includes river, pond, swamps, ocean, desert areas, mountain/hilly areas etc. can represented   with some other feature in the form of mapping. As well as man-made features, include residential , commercial, industrial and transportation network , combined with administrative boundary can be represented spatially in the form map using satellite images .  As base maps, topographic maps and thematic maps are primary requirement for monitoring, evaluating, planning and management of land resources both manmade and natural.  Elevation maps can be very important in planning and management of many applications such as water resources , forest resources, and large infrastructure. The Demand of remote sensing images is rapidly

What is Hydrology Hydrology encompasses the study of water on and beneath the surface of the earth, occurrence of water, movement of water, physical and chemical properties of water and its relation with the surrounding environment.  'Hydro' word comes from the Greek word, which means water and logy means study. So study of water can be defined as ‘hydrology’ .  Hydrology studies indirectly also related to many other studies such as land use/land cover studies, forestry, agriculture , since existence of water in these studies play significant role.  Changes in hydrology are dynamic, it changes with years as well as with change in season and bring huge impact on surrounding environment.  Therefore require regular and sometimes frequent observations to assess and control the negative impact on hydrology of any given area. Remote Sensing and GIS in Hydrology Satellite remotely sensed observations enhance understanding of hydrological studies and impact of surrounding environme

Introduction Agriculture is very important for economy of both developed and developing countries. Agriculture productions provide food, which is necessity of everyone to survive.  Therefore agriculture production in cost effective manner is the main need of each farmer.  A farmer needs resourceful knowledge and information of products to form a viable strategy for farming. Remote sensing is a tool which help to ascertain crop health and damage, potential yield, soil conditions. Remote sensing data in the form of satellite images and aerial photographs are used for crop mapping, classification, health and monitoring farming process. Remote sensing applications in agriculture are below- Crop type mapping and classification Crop condition assessment Estimate crop yield Soil behavior analysis Mapping and monitoring of soil and crop Cr op Type Mapping Using Remote Sensing Technology Crop identification and mapping is important for both government agencies and private

Introduction Land cover and land use mapping is one the most imperative and typical application of remote sensing . Land cover represents the physical condition of the earth surface features such as forest; grassland etc.  Whereas land use reflects man-made activities includes use of land such as residential area, industrial zone, agriculture field etc. Land cover include land surface feature, those can be natural, semi-natural and man-made and these features can be observed directly on satellite images .  On the other hand, Land use is classified based on utilization of land.  It can be categorized into residential, commercial, urban , rural and agriculture etc. Land use indicates the employment of the land by human, so if any change or shift in use of land such change from agriculture to residential/commercial for any given location brings the change in land use. Remote Sensing techniques are the most practical, cost efficient and provide satellite data beyond human vision.

Air Pollution become threat to daily life as already faced severe attack of pollution in New Delhi and its surrounding. Population and increase in transportation system specially vehicle growth playing significant role in increasing air pollution. As well as built-up growth in the form of development also affecting and increasing pollution. Factors Affect Air Pollution Population growth and in-migration of poor people influence the urban centers.  Increasing pressure on land and other resources in the form of industrial and commercial development.  urban sprawl is seen as one of the potential threats to pollution  and many more. Here in this article demonstrated that how  GIS and remote sensing can be used to find the affect of  urban and population growth on air pollution of a city and described with real data analysis. Local pollution patterns in cities are mainly related to land use category, transportation network, and air flushing rates. Here in this study, an int

Application of Remote Sensing and GIS in Coral Reef Assessment Impact assessment of Human activities on reef ecosystem Coral reefs are large underwater structures composed of the skeletons of colonial marine invertebrates called coral. The corals have a symbiotic, or mutually beneficial, relationship with the zooxanthellae. These algae live inside the coral polyp's body where they photosynthesize to produce energy for themselves and the polyps.  The coral polyps, in turn, provide a home and carbon dioxide for the algae. Zooxanthellae also provide the coral with their lively colors as most coral polyp bodies are clear and colorless without zooxanthellae.  Coral reefs cover less than 1% of the ocean floor, but they are among the most productive and diverse ecosystems on Earth. About 25% of all known marine species rely on coral reefs for shelter, food and breeding. Coral reefs are the primary habitat for more than 4,000 species of fish and thousands of other plants and animals.