Spatial Distribution Pattern of Trees in Relation to Soil Edaphic Status in Tropical Rain Forest in West Sumatra, Indonesia I. Distribution of Accumulating Trees.

Spatial Distribution Pattern of Trees in Relation to Soil Edaphic Status in Tropical Rain Forest in West Sumatra, Indonesia II. Distribution of Non-Accumulating Trees.

“…Judging from the results in Fig. 1, Tables 3 and 4, comparing with the results for the accumulating trees in the previous paper (Masunaga et at., 1998), we categorized the elements into the following groups on the basis of the relationship each showed between the distribution of its non-accumulating trees and the distribution of its extractable form in the soil.…”

“…The significance was measured by the F test (Iwao, 1977), but only for clumped distribution. The methodological procedure of data collection and analyses can be seen in Masunaga et al ( 1998).…”

“…From these results, it appeared that the distribution of the non-accumulating trees of these elements was positively correlated with the distribution of the extractable elements in the soil. As to these four elements, a positive association between the soil edaphic status and the tree nutritional characteristics exists in terms of the distribution of these accumulating trees (Masunaga et al, 1998) and non-accumulating trees. Moreover, the distribution of both the accumulating and non-accumulating trees of K, B, Sr and Zn seems to be strongly related to the soil edaphic status judging from clumped distribution of those trees in the plot.…”

“…In a previous paper (Masunaga et at., 1998), the relationships between the distribution of accumulating trees and the soil edaphic status at the depth of 0-5 c m and 5-15 c m were studied. The results…”

“…The non-accumulating trees of K, Na and Sr were distributed in the areas with the low and narrow elemental concentration range in soil, suggesting that the low edaphic levels seemed to strongly contribute to the low concentration level in the bark. However, in terms of the other accumulating trees and non-accumulating trees, the concentration levels in the bark were considered to be regulated not only by the soil edaphic status, but also by the tree genetic characteristics.Key words: non-accumulating tree / bark / mineral nutrients / spatial distribution / soil edaphic status / tropical rain forestIn a previous paper (Masunaga et at., 1998), the relationships between the distribution of accumulating trees and the soil edaphic status at the depth of 0-5 c m and 5-15 c m were studied. The results…”