Land Use And Regulation


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effect of land use and regulation on water quality

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Land Use And Regulation

  1. 1. Land Use And Regulation<br />By: KetanWadodkar<br />M.Tech 1st yr<br />10519013<br />Under Guidance of Prof. InduMehrotra<br />
  2. 2. Land use is the human use of land.<br />Land use involves the management and modification of natural environment or wilderness into built environment such as fields, pastures, and settlements.<br />The United Nations' Food and Agriculture Organization Water Development Division explains that "Land use concerns the products and/or benefits obtained from use of the land as well as the land management actions (activities) carried out by humans to produce those products and benefits." <br />What is land use?<br />
  3. 3. "'Land use' is a key term in the language of city planning.“ by Albert Guttenberg (1959)<br />Commonly, political jurisdictions will undertake land use planning and regulate the use of land in an attempt to avoid land use conflicts.<br />Land use plans are implemented through land division and use ordinances and regulations, such as zoning regulations.<br />Land use and regulation<br />
  4. 4. Land use and land management practices have a major impact on natural resources including water, soil, nutrients, plants and animals.<br />Poorly planned development along waterbodies can threaten water quality, aesthetics, wildlife habitat, municipal infrastructure and private property<br />And in this perticular presentation we are more concentrating about change in water quality due to land use and regulations.<br />Eg. water bodies in a region that has been deforested or having erosion will have different water quality than those in areas that are forested.<br />Flood controls can also be achieved through this type of practises.<br />
  5. 5. Infrastructure Protection:<br />vegetated riparian buffers can offer protection from flash flooding and provide a flood and erosion “insurance policy” for towns.<br />It is intended to protect:<br />habitat for fish and other aquatic life,<br />protect habitat for wildlife,<br />protect water quality for human uses and for aquatic life,<br />control erosion and limit sedimentation, <br />reduce the effects of flooding.<br />
  6. 6. Protection of significant marsh/riparian habitat<br />Protection of wetlands<br />Establishment of riparian corridors<br />Management of riparian corridors<br />Modification of riparian vegetation<br />excluding new structures and uses from buffer areas around fish-bearing lakes, streams and associated wetlands<br />prohibiting vegetation removal or other alteration in those buffers for uses not permitted in the riparian corridor except under certain circumstances<br />In details the methods can be adopted as follows:<br />
  7. 7. Anaturally vegetated 50-foot-wide riparian buffer on each side of a stream controls soil erosion.<br />100-foot-wide buffer protects many of the functions associated with healthy riparian habitat.<br />For lakes a 100 foot vegetated riperian buffer is provided.<br />A wider riperian buffer is provided to a soil which is more prone to erosion and where significant wild life corridors can be constructed.<br />Buffers should be provided according to small or large streams and how they are affected with the pollutions.<br />Riperian buffers:<br />
  8. 8. Fig: <br />
  9. 9. Trap and remove sediment in runoff. <br />Reduce stream bank erosion. <br />Trap and remove phosphorus, nitrogen, and other nutrients that cause excessive algae blooms and damage to aquatic ecosystems. <br />Trap and remove other contaminants, such as pesticides, heavy metals and pathogens <br />Contribute leaves and other energy sources to the stream. <br />Store flood waters, thereby decreasing damage to property. <br />Provide habitat for amphibious and terrestrial organisms. <br />Maintain base flow in stream channels. <br />Maintain good water quality. <br />Protect channel-forming processes and channel stability. <br />Protect roads and bridges from erosion. <br />Improve the aesthetic appearance of stream corridors. <br />Offer recreational and educational opportunities to residents and tourists<br />Maintain habitat for fish and other aquatic organisms by moderating water temperatures and providing woody debris. <br />Ex. Lake Champlain and other Vermont lakes<br />Enlisted uses of riperian buffers<br />
  10. 10. Interdependence of land, water, ecosystems and socio-economic development.<br />Integration can be facilitated by formulating and implementing a floodplain land use regulation.<br />restriction so as to ensure hydraulic link between the river and the floodplain, and the socio-economic and environmental functions of floodplain.<br />constraint of environmental flow in order to ensure in-stream flow requirement.<br />Programs are required to restore storage function of floodplain and for restoration of wetlands. <br />Integration of land and water management<br />
  11. 11. Chalakudy river basin with an area of 1525 km2, is a tributary of the Periyar, the largest river in<br />There are six reservoirs impounded in this basin. Kerala.<br />Porigalkuttureservior of length of 583m2 .<br />Average annual rainfall in this area is around 3300 mm, varying from a little over 3000 mm in Chalakudy town to 3700 mm in Poringalkuttu.<br />Total average annual drainage discharge (1980–2000) is 1421.81 million m3 near Chalakudytown.<br />Seasonal variation of temperature is within 5°C.<br />Case study: Chalakundy river basin Kerala<br />
  12. 12. Land use data:<br />
  13. 13.
  14. 14. Fig: Physico-chemical characteristics (selected) of surface water samples under different landuse types<br />
  15. 15. This study has brought out that there is definite relationship between landuse and water quality.<br />Anthropogenic activities are the main contributors to water quality deterioration.<br />Measures to improve water quality need to address issues of landusemanagement.<br />It is expected that the findings in this study will be helpful in this context<br />conclusions<br />
  16. 16. Thank You<br />