Altitude (m): 54 Topography: plateau Orientation: FLAT Slope (%): 4.0 Hydrology: river at 1500m Soil type: CAMBISOLS Soil sub-type: skeletic Parent rock: river terrace sand or gravel PH: 5.0
Climate
Average temperature (°C): 11.6 Average precipitation (mm): 693 Number of frost days: 48 Reference period for climatic data: 1981-2010
History of the site
The global objective is to develop a new silviculture to slow down the impacts of climatic changes and to maintain the high quality wood production of Douglas-fir. The objective of this demonstration site on Douglas fir is to evaluate effect of sylviculture (thinning) on potential water stress.The Douglas-fir stand is 15 years old, and it's localised in a sensibility climatic area for Douglas-fir in France. Initial density is 1142 trees/ha.This demonstration site has 3 experimental plots : *Control, with no thinning *low thinning in 2012 (sampling rate of 35%) *high thinning in 2012 (sampling rate of 55%)
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