Daily Archives: February 14, 2008

History of Remote Sensing: Multispectral Images

Posted on February 14, 2008 by Rashid Faridi

A significant advance in sensor technology stemmed from subdividing spectral ranges of radiation into bands (intervals of continuous wavelengths), allowing sensors that produce several bands of differing wavelengths to form multispectral images. This concept should be familiar to anyone who … Continue reading →

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Biodiversity: Definitions

Posted on February 14, 2008 by Rashid Faridi

The most straightforward definition is “variation of life at all levels of biological organization”. A second definition holds that biodiversity is a measure of the relative diversity among organisms present in different ecosystems. “Diversity” in this definition includes diversity within … Continue reading →

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Agrobiodiversity

Posted on February 14, 2008 by Rashid Faridi

Agrobiodiversity is a sub-set of general biodiversity including all cultivated varieties. Cultivated varieties can be broadly classified into “modern varieties” and “farmer’s or traditional varieties”. Modern varieties are the outcome of scientific breeding and are characterised by a high yield … Continue reading →