Land use

196 views

Published on

Published in: Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
196
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
5
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Land use

  1. 1. ^Positive land use ^
  2. 2.  Agriculture – Intenseuse can cause loss ofsoil, erosion, and duststorms. Use ofpesticides can affectboth surface water andgroundwater quality. Intense irrigationcauses water loss fromthe natural system
  3. 3.  Over-farmingtakes importantnutrients out ofthe soil makingit useless forany furtherproduction ofcrops
  4. 4.  Pesticides poisonthe water thatplants, animals, andhumans use daily
  5. 5.  Grazing – Overgrazing can cause loss ofvegetation, invasion of exotic species, soilerosion, and nutrient loss.
  6. 6.  Grazing lands are the most degraded land usetypes in the world Overgrazing along with over-trampling lead tothe reduction of vegetative cover, exposure ofsoil to erosion, and ultimately to desertification
  7. 7.  The mostcommonovergrazing isdone bydomesticanimals
  8. 8.  Forestry– Intenselogging or clear cuttingcreates conditions forincreased erosion;eroded andtransported sedimentcan cause increasedsediment loading instreams, which couldaffect fluvial habitat.
  9. 9.  Logging takes nutrients and minerals out thesoil Logging makes erosion easier because the thetree is no longer there to hold the soil andwater
  10. 10.  Water impoundment – This has the potentialto affect one segment of a stream or river oran entire watershed. Controlled volume offlow does not duplicate natural events, suchas floods and drought. It can affect thesediment load, change the streammorphology, and alter the habitat that isdependent on a fluvial system.
  11. 11.  Waterimpoundment candeplete differentspecies of fish byaltering theirnatural habitat It yields a flow ofecosystemservices such asnutrient cycling
  12. 12.  Waterimpoundment putsa halt on animportantecosystem serviceprovided by rivers:fisheriesproduction
  13. 13.  Urbanization – This can cause a host ofimpacts, but a few stand outs are: change indrainage patterns because of impervioussurfaces (streets, parking lots, pavement,buildings), increased erosion, affects onsurface and groundwater quality and quantity,release of toxins into the air, increasedhumidity in arid regions
  14. 14.  Impervioussurfaces affectsinfiltrationcapacity whichalso createserosion New constructionaffects sedimentinput into thestreams
  15. 15.  Alterations to shorelines – Dredging, beachmining, river modification, installation ofprotective structures, and removal of back-shore vegetation can potentially altershoreline processes, position, andmorphology by changing the sediment supply,transport, and erosion.
  16. 16.  Installation of damsreduces the amountof sediments flowingwhich can causeerosion on theshores
  17. 17.  Mythili, R. G. "Significance of the Problem." Web. 05 Mar.2011. <http://coe.mse.ac.in/pdfs/coebreifs/Mythili.pdf>. Restoration ecology, 2009 July, v. 17, no. 4, p. 441-445. 17 4 Conservation biology the journal of the Society forConservation Biology, 2009 Oct., v. 23, no. 5, p. 1222-1231.23 5 Journal of applied ecology, 2009 Feb., v. 46, no. 1, p. 154-163.46 1 Lakes & Reservoirs: Research & Management; Sep/Dec2003,Vol. 8 Issue 3/4, p201-216, 16p

×