Damdama and Badhkal, two prominent lakes situated in the north and south of the Aravalli outcrops, have all but vanished. Increasing human interference, unprecedented rise in built up area, privatisation of land for recreational purposes and unsustainable cropping activities in recent years are wiping out these lakes.
The burgeoning mega cities, especially in developing countries are expected to experience higher levels of risk and exposure to health hazards from a combination of individual, physical and environmental factors.
Natural resources are depleting rapidly impacting development. The availability of time series Earth observation data assists the investigation of spatial patterns of different natural resources and the changes therein.
The concern for sustainable development received a policy fillip in the mid twentieth century and carved out a niche for itself in the global strategies for growth. Country level discussions have helped identify domains that influence sustainable living, yet critical concerns remain unaddressed.
Global changes due to the influence of extraterrestrial phenomena can be studied by using various satellite based information. An attempt is made in this article to understand the influence of such changes as a cumulative factor to predict some of the natural disasters which would make disaster management more effective.
In recent times, the Indian judiciary is playing a key role in the development of environmental norms. While various judgements passed by the courts and the National Green Tribunal have sought to prohibit environmentally harmful activities, in the absence of rigorous implementation, little progress has been made so far.
Soil erosion is the removal of the top layer by natural agents. However, deforestation, overgrazing and infrastructural development accelerate soil erosion. As soil is a critical natural resource, the risk of its erosion must be addressed urgently. Use of modern technologies like remote sensing and GIS can help build an understanding towards risk mitigation.
The unique climatic and edaphic characteristics of India assist biological invasion by alien species like the vilayati keekar or Prosopis Juliflora that damage native diversity. Control methods for eradicating the species have proved futile. Although the biocontrol efficiency of Cuscuta reflexa has been established, the agent requires further trials for successful deployment.
Flood is a complex outcome of an interface between geological, physiographical, hydrological, meteorological and anthropogenic dynamics. It mandates high computational techniques for the analysis of a large volume of hierarchical pictorial data. GIS technology, inseparably interleaved with remote sensing, helps to panoramically beam complex issues involving river floods and the feasibility of detecting and mitigating them.
g-Governance can be described as a geospatial plugin to e-Governance, acting as an extended module with the additional functionality of geospatial technology. The article explains the genesis and geospatial constituents that are required for the implementation of g-Governance in India.