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Biodiversity threat through exotic species monitoring and management using Remotely Sensed data and GIS techniques - A case study of Banni (Kachchh) Gujarat, India
§Salinity ingress
- Trenching
This is another major problem in Banni. Salinity ingress is approximately about 4% per year in the region. To control this ingress to some extent it is suggested to dig a trench around good grasslands, which helps in leaching out salinity and arrest cattle entry to some extent. Fig - 04 depicts the length of trenching and fencing required and the cost may be calculated based on local labor and material charges.
- Ghaduli - Santalpur
It is also suggested that the road which is planned to construct between Ghaduli - Santalpur (via. Khavda - Katwndh - Dolaveera - Amrapur - Bela and Madhutra) must be completed having sluice gate opening only one side to arrest salinity ingress into Banni and other areas.
§Rain water harvesting
Leaching out salinity atleast Five to Eight inches from the surface will help grass to grow in low - saline areas of Banni. This is possible by allowing fresh water (rain water) to flow over saline areas. For this purpose rain water harvesting is necessary. So, the possible locations were suggested. However, it is very much required to study "What type of structure ?, How much capacity etc.. " for implementation. Fig - 05 shows the topography of the area and Fig - 06 shows the status of drainage pattern in the area and suggested rainwater-harvesting structures.
References
- Weaver RD & Ke.chun.kin Economic valuation of Bio-diversity. In Bio-diversity & Landscapes PP 255-269, Cambridge University Press.
- Biodiversity, CEE, 1997, Oxford University Press.
- Grassland Mapping & Monitoring of Banni (Kachchh) Gujarat using Remotely Sensed Data by R. N. Jadhav, M. M. Kimothi, A. K. Kandya. January 1992.
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