Loading Accommodation Search ....
powered by DISCOVER AUSTRALIA
Are we the Clever Country?: topsoil erosion
Showing posts with label topsoil erosion. Show all posts
Showing posts with label topsoil erosion. Show all posts

Wednesday, 7 May 2008

ABC Landline - Sunday 4th May, 2008

Interesting segment Rice Shortage Critical, by Tim Lee from the ABC - focussing on the Murray-Darling Water Crisis.

One part dealt with the rice growing regions and their lack of sufficient water -- claims that Australian Rice Producers are among the most efficient and productive in the world. This fact linked in with the story about food riots in 10 countries in the past 2 months, where rice staple food prices had risen by 70%. This years crop will be only 20,000 tons - down from several Hundred Thousands as per non-drought norm.

Cross reference this with:
  1. Burma cyclone -- how much rice is grown here?
  2. Major increase for basic food staples because of the use of traditional food crops as an energy source to reduce dependence upon oil.
  3. Continuing political problems in Africa.

We should be helping all stakeholders in our 'Foodbowl Regions', including farmers, irrigators and environmental users, rather than just focus on buying back irrigation allocations so that we can just maintain river flows -- after all -- the drought is continuing, and the BOM has no rainfall relief predicted for the forseeable future.

Thursday, 3 April 2008

Topsoils Blown Away

Terrible news from the ABC -- After the massive windstorms that swept through southern parts of Australia, reports suggest that tonnes of priceless topsoils have been stripped off our farmland.
Putting environmental flows back into the Murray is vital -- so too is providing the farmers with enough water for their paddocks -- bind the soil & enable growth of ground cover. Drought does more than dry up rivers -- it puts our soils up into the Extreme Erosion risk category.

Check out story here ABC News

Thursday, 27 March 2008

Onesteel Whyalla sent papers on Thermal Desalination

Contacted Onesteel Whyalla management -- passed on the Desal proposal to them. Their blast furnace process generates temperatures of 2,000 deg C - they already capture part of this heat for use in other parts of the steelmaking process. Hopefully they can also use some for thermal desalination.

Friday, 21 March 2008

Water for South Australia

Visited Adelaide - many gardens dead - very dusty - high level of water restrictions in place - La Nina event produced floods in QLD, no respite for SA.

Adelaide also just experienced a 1 in 3,000 year event of continuous hot days [15 days over 38 deg C].
Now there is more stress on the Murray River and Groundwater resources - as per the fourfold increase of salinity levels in the Coorong, extremely low water levels in Lake Alexandrina etc. Some of the groundwater resources failed on a couple of occasions in the past.

Action: Desalination Proposal sent to:
* SA Members of Parliament -- including the Premier, Mike Rann; MP, Andrew Evans; Federal Senator-Elect, Nick Xenophon.
* Private industry - staff members at the Nyrstar Lead Smelter at Port Pirie.
The concept may also be used by the Onesteel Facility at Whyalla.

Rationale: Original paper with Heat Capture/Heat Exchanger process focusses on the Aluminium Smelter at Portland VIC, but it can be used in any Heavy Industry process producing large amounts of heat as a byproduct.

With the Federal Govt have still not able to reach agreement over a comprehensive Murray River Strategy [VIC are still holding out] it looks like the Murray Basin will not get any new water recharge action anytime soon.

Conclusion: By sending this material directly to the South Australians, they may be able to go ahead themselves in a joint venture with SA Heavy Industry to build 2 small [20 M/litre day] Low Temperature Distillation Desal Plants at Port Pirie and Whyalla.
If successful, the plants may be extended/expanded to make South Australia more drought-proof.