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tree productivity
Higher values of tree productivity combined with lower annual moss productivity were found in sites in northern taiga in comparison with forest-tundra.
      
Recurring cork extraction is a major stress factor and the large water loss from the stripped trunk surface may affect the water balance and tree productivity.
      
To assess the potential impacts on tree productivity, stomatal regulation was investigated in Douglas fir with chronic stomatal occlusion and defoliation from varying levels of the Swiss needle cast (SNC) fungus, Phaeocryptopus gaeumannii.
      
Tree productivity and water potential productivity in returning farmland to forest project in Datong County, Qinghai Province
      
Part 1: Long-term effect on maize, cassava and tree productivity
      
The objective of this study was to determine crop and tree productivity in several alley cropping planting patterns.
      
Improvements in fruit-tree productivity and interspecies competition were of greater importance where family land holdings were smaller.
      
Willow tree productivity on fertilizer solutions containing various Ca/Al ratios
      
We suggest that a reduction of the pool of labile organic matter appears to hamper tree productivity through a nutrient shortage.
      
Stand: Roots as Determinants of Tree Productivity and S
      
The study emphasizes the significance of roots as determinants of tree productivity and survival in the Mediterranean ecosystems.
      
In order to address the problem of pollutant effects on trees against the background of environmental fluctuations a simulation model using radial increment as an indicator of tree productivity is proposed.
      
One method to estimate fruit availability is to measure tree diameter at breast height (DBH) and assume a positive correlation with fruit tree productivity.
      
Our first objective was to test the relationship between DBH and tree productivity.
      
We used as our measures of tree productivity: volume of the fruit bearing region of the tree crown (FBRv) and fruit yield measured as grams of dry fruit matter per fruit bearing region (FBR).
      
Our second objective was to determine if time spent feeding on fruits by golden lion tamarins was correlated with 3 measures of tree productivity within their territories.
      
We define tree productivity within a territory as tree productivity × tree density (fruit tree productivity/ha).
      
We used as our measures of tree productivity/ha: (1) DBH × tree density, (2) fruit yield × tree density, and (3) FBRv × tree density.
      
We used measures of tree densities to calculate tree productivity/ha.
      
 

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