Nutrient distribution for non-photosynthetic organs in the sharptooth oak stands
锐齿栎林非同化器官营养元素含量的分布

The nutrient percentage contents for non photosynthetic organs in the sharptooth oak stands are in the following order. N is: barks>branches>roots>sapwood>heartwood, P is: roots>branches>barks>sapwood>heartwood, K is: branches>barks>roots>sapwood >heartwood, Ca is: barks>branches>roots>heartwood>sapwood, Mg is: roots> barks>branches >sapwood>heartwood. The nutrient percentage contents of branches and roots decrease with increase in branch and root diameter,and have difference in different crown layers and ...