Abstract
Wetlands are wide ranging natural and man-made, permanent, temporary or seasonal waterbodies or water saturated lands, lentic or lotic, fresh, brackish or saline waters (Ramsar). They have profound ecological and economic importance. In India, wetlands, both natural and man-made of different morphometries and sizes are very common everywhere, more so in the states of Bengal, Assam, Orissa, Andhra, Tamil Nadu and Kerala. The burgeoning human population, rapid industrialization, urbanization, expanding agriculture, landfills by garbage, effluent discharges are responsible for degradation of wetlands. Tremendous efforts by the Indian Ministry of Environment (Wetland Unit), Indian Ramsar, Indian Unit of World-wide Fund for Nature Conservation, are underway in identifying the wetlands of national importance, their conservation and management.
Innovative studies on the wetlands and their margins in Surha (listed as of National Importance) lake and rivers, Rihand and Ganga have been made. Quantitative capabilities of marginal vegetation as ‘filters’ or ‘checks’ for soil, water and chemicals and as heavy metal harvesters have been evaluated. Rehabilitation options are discussed.
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