Kanjli Wetland
Kanjli Wetland, a man made Wetland, which subsumes the Kanjli Lake, located in the Kapurthala district of Punjab state in India, was created in 1870 by constructing the headworks across the perennial Bien River, a tributary of the Beas River to provide irrigation facilities to the hinterland. The rich biodiversity of the wetland comprising aquatic, mesophytic and terrestrial flora and fauna including some important species of plants and animals was recognized internationally by the Ramsar Convention in 2002 by designating the Kanjli Lake in the List of Wetlands of International Importance. In this context, it is reported that the Punjab State which has 14 wetlands covering an area of 225.76 km2, the Harike Wetland and the Ropar Wetland chosen by the Ministry of Environment and Forest, Government of India for their conservation and management are now also included in the Ramsar list covering a total area of 5650 ha; Kanjli is upstream of Harike wetland located in the Beas river basin while the Ropar wetland is in the Roopnagar district.
Wetland
The Kanjli Wetland is one of the manmade wetlands in India identified by the Government of India, as per the Expert Group's report published in 1990. Since the main article on Wetland does not cover the aspects of Indian wetlands, the work done in this regard in India is explained. The Expert Group has based its directory on the basis of the definition enunciated by the Ramsar International Convention on Wetlands:" areas of marsh, fen, peatland, or water whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tide does not exceed six metres".
Further, considering the definition of wetlands given by Cowden in 1979 for classification of wetlands in the US, three key attributes of hydrology, wetland vegetation and hydric soils have also been considered for identification. In this list, mangroves are not included since it falls under a separate category.
The Expert Group's directory has made a distinction between Natural and Man-Made wetlands. In India, in its 24 states and two union territories, there are 2167 nos of natural wetlands with a total area of 1.45 million ha and Man-Made wetlands of 65,254 nos with total area of 2.59 million ha. The inland water bodies listed in the report covers lakes, tanks, reservoirs etc.
Royal patronage
The erstwhile Maharaja of Kapurthala, built the headworks on the river Kali Bein which resulted in the creation of the Kanjli Wetland which subsumes the sparkling lake by the same name. The Maharaja also built a retreat, in the French architectural style, in the forest set in lovely natural scenery, on the banks of the Lake, which was named "The Villa" or the "Villa Buona Vista". His royal successors live in this retreat even now.The lake has been developed as a tourist destination with facilities for fishing and boating. A traditional Mela or exhibition is held here during Depavali festival.
Access
The Kanjli ecological Wetland region around the village Kanjli is from the Kapurthala town, also the district headquarters, and is thus well connected by road network to all parts of the state and rest of the country.Hydrology
The Kali Bein River, originating near village Dhanoa, upstream of Budho Bark Regulator in Hoshiarpur District, formerly a main tributary of the Beas River feeds the Wetland and the Lake. The Bien has now become an independent river due to siltation and westward swing of the Beas River. Agricultural development dominates the catchment of the wetland. The Bien river has contributed to the formation of fertile plains by bringing down large sediment loads during floods. Depth of water in the Lake has a seasonal variation of 3.05 m to 7.62 m depending on the season and inflow discharge. Catchment area is mainly under agriculture. The wetland is in the semi-arid zone and receives an average annual rainfall of about 620 mm. The temperature varies from a maximum of 450 C in summer to an average of 60C during winter with occasionally freezing temperatures.The Kali Bein and its wetland provide water supply for agriculture in the Kapurthala district, recharges the ground water, drains excessive rainwater from sensitive crops like wheat, potato, etc. and acts as a sponge by absorbing the flood waters.
Water quality
The water and sludge quality of the Wetland has been studied by the Punjab Pollution Control Board Their report indicates that quality generally conforms to Class 'B' with some degree of quality degradation to Class 'D' sometimes during December.From a satellite imagery study of the wetland it has been inferred that Kanjli Lake could be categorised under low turbidity class during pre-monsoon period and moderate turbidity class during post monsoon season which is indicative of regimentation occurring in the lake during post monsoon season.
Flora and fauna
The flora and fauna recorded in the Wetland and the Kanjli Lake within it are the following.Flora
- Twelve varieties of trees recorded in the wetland are Acacia arabica, Albizia lebbeck, Azadirachta indica, Dalbergia sissoo, Eucalyptus hybrid, Ficus bengalensis, Mangifera indica, Melia azedarach, Morus alba, Prosopis juliflora, Syzygium cumini and Ziziphus mauritiana.
- Shrubs recorded are: Calotropis procera, Ipomoea crassicaulis and Tamarix dioca
- Herbs noted are Saccharum munja, Saccharum spontaneum, Scirpus sp. and other common herbs.
Aqua flora
Aqua fauna
According to the District Gazetteer and the study done by the National Environmental Engineering Research Institute, 17 fish species have been reported which includes the common fish species of Catla catla, Channa marulius, Cythus striatus, Cirrhinus mrigala, Labeo calbasu and Labeo rohita.The tortoise is the common reptile reported in the area.
There are twenty-eight resident bird species and nine migratory species. The migratory birds are various species of goose, white-eyed pochard, wigeon, tufted pochard, common teal, large whistling teal, pintail, mallard and shoveller.
Fauna
The mammals in the wetland are the Indian civet, mongoose, Indian porcupine, squirrel and common Indian hare.Problems in the wetland
In the Wetland, the ecological status of the Kanjli lake, in particular, has been threatened on account of the following issues.- Extensive growth of water hyacinth due nutrients and pesticides from adjoining agricultural fields
- Anthropogenic pressure and consequent land encroachment
- Eutrophication, particularly due to in-situ decay of hyacinth
- Conversion of wetland for agriculture, human habitation, industrial expansion and recreational activities
- Illegal and indiscriminate fishing causing disturbance to bird life
Conservation measures
- Detailed mapping of the wetland for declaring and notifying the Kanjli Wetland as protected area under the Environment Protection Act, 1986.
- Judicious hyacinth control by the irrigation department, district police, and even army units, by manual methods. Conveyor belt system as a mechanical method to clear the weeds is also being tried.
- Hyacinth control through biological control by releasing two weevil species of Neochetina bruchi and N. eichorniae. Release of the moth Sameodes albiguittal is also being considered as an option.
- Introduction of more fish species in the lake judiciously to avoid any adverse effects of exotic species.
- Afforestation measures around the lake area and in the small islands, with mixed indigenous species of trees to prevent soil erosion resulting in siltation reduction in the lake, to attract large species of birds to nest and roost and to enhance the ecosystem.
- Selective Fencing of the Wetland to prevent excessive grazing to preservation of important pockets provide habitat for wading birds and to check encroachments
- Monitoring of water quality continuously to check the degree of external nutrient loading of the lake waters and to evolve appropriate preventive and curative steps
- Public awareness campaigns through mass-media, educational material, camps, etc. of the wetland eco system with the help of Voluntary Organizations
- Continued scientific research on Biological and hydrological components, and Productivity potential with respect of economic value, social aspects of heritage and to rate the significance of the wetland.
- A team of five students from a local university have been in reclamation activities
Sikh tradition