Advice on Vegetable Farming in the Mountains of California

Hi everybody!
I'm designing a vegetable/fruit farm for a upcoming eco-lodge in the mountains of southern California: 4,400' elevation, zone 8b, an ample supply of water, and good soil. The main challenge is daily temperature variation. During the summer, it can be in the mid 30s at night before rising to the 80s during the day. My question to all of you is, what strategies (other than greenhouses/hoophouses) are you aware of to keep the ambient temperature more stable on an acre of land? My instinct is to use perennials (tree + shrubs) around the perimeter to block wind and hold moisture. I'm also interested in ponds as heat sinks but don't know much about the subject, so any help would be great!
Thanks,

Félix

Use large masses right next to or in your garden (like boulders and ponds) to absorb heat during the day and slowly release it at night. Try to get them in the sun as much as possible. Sepp Holzer does a lot of mountain farming. I would suggest looking into his methods

The Rocky Mountain Permaculture Institute did lots of experiments in how to stabilize temperature. If it worked at all there in extreme climate it might work very well in your climate.
Do you have any updates?  

And the dandelions and weeds nearby survive with that temperature swing, so plant/create landrace-cultivars that are locally adapted to such temperature swings.
You could turn all the walkways into narrow "ponds" think chinampas.
In florida to protect citrus during cold spells they turn on sprinklers, to coat the trees with the "warmer water, so maybe turn on some foggers or something.
As you mentioned you windbreaks makes of trees/huglekultures would help to cutdown on the windchill effect.  

MULCH