This Sustainable House

Posts Tagged ‘weather’

HOME is an ode to the planet’s beauty and its delicate harmony. Through the landscapes of 54 countries captured from above, Yann Arthus-Bertrand takes us on an unique journey all around the planet, to contemplate it and to understand it. But HOME is more than a documentary with a message, it is a magnificent movie in its own right. Every breathtaking shot shows the Earth – our Earth – as we have never seen it before. Every image shows the Earth’s treasures we are destroying and all the wonders we can still preserve. “From the sky, there’s less need for explanations”. Our vision becomes more immediate, intuitive and emotional. HOME has an impact on anyone who sees it. It awakens in us the awareness that is needed to change the way we see the world.

This is, quite possibly, one of the most powerful documentaries ever created… it is essential viewing for every human being.

Watch the trailer below

To watch the whole movie go to http://www.youtube.com/homeproject.

The Canberra region has quite a harsh climate for gardeners with very hot dry summers, and bitterly cold winters. As a result our growing season is quite short requiring strategies, such as greenhouse growing of early seedlings, to artificially increase the growing season.

Last night the realities of cool climate gardening became apparent as the first frost descended over the property. Admittadley it was still quite a light frost but it does symbolically, and practically, demonstrate that the joy of summer is over. The still of winter has begun…

Or perhaps, mote accurately, collect water while the rain falls…

Water is the number one limiting factor at TSH, as it is for most Australian farmers. We are, after all, the driest inhabited continent on Earth.

Like most rural properties, TSH has no reticulated water access but relies on the water that can be collected off the roof or catchment run-off. In the case of roof run-off the water is stored in a series of thanks with approx 140,000L capacity. However catchment run-off is a different tale with main storage being one medium sized delapidated dam. Damn!

The fact that our dam doesn’t hold water, if you’ll excuse the obvious pun, is actually a blessing as it encourages me to be more creative with how water is stored on the property. Which brings me to the point of this post… Swales!

Swales are an earthwork designed to capture water in-situ and transmit that into the sub-soil. Whilst in a dam one attempts to capture water with an impervious layer, in the case of a swale we capture it with a permeable layer. The basic principle, as demonstrated below, is to trap rainwater using trenches/embankments placed along a contour and then allow this water to permeate into the soil where it flows under the surface. This has the advantage of lowering evaporative losses as well as placing the water right where our plants need it, at their roots. It also reduces erosion and, best of all, requires NO energy to run a pump… Grand.

In the case of TSH there are a couple of areas that would benefit from swaling. The first area is in the quarantine yards where the swales will capture road run off and direct it to a better use. The second area is the rear paddocks where the run-off can be chanelled along the countours to collect both from the ‘interswale’ areas and the neighbours paddock.

As we develop these earthworks I will post additional comments but in the meantime just imagine the possibilities.