Nutrient-uptake and nutrient-use efficiency of Pinus thunbergii Parl. along a topographical gradient of soil nutrient availability

Tsutomu Enoki, Hideyuki Kawaguchi, Goro Iwatsubo

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

To examine responses of a plant species to nutrient availability, we investigated changes in soil nutrient availability, litterfall production and nutrient content in litterfall along a topographic gradient in a Pinus thunbergii Pad. plantation. Responses were evaluated in terms of three efficiency indices: (i) nutrient-uptake efficiency (the ratio of nutrient return in litterfall to soil nutrient availability); (ii) nutrient-use efficiency (the ratio of litterfall mass to nutrient return in litterfall); and (iii) nutrient-response efficiency (the ratio of litterfall mass to soil nutrient availability). These indices can distinguish the ability of a species to acquire nutrients and its ability to use them in litterfall production. Nitrogen and phosphorus availabilities in soil were lower in upper slope positions. The three efficiencies were higher in upper slope positions and negatively correlated with soil nutrient availability for both nitrogen and phosphorus. An increase in nutrient-response efficiency was achieved by both increases in nutrient-uptake and nutrient-use efficiencies.

Original languageEnglish
Pages (from-to)191-199
Number of pages9
JournalEcological Research
Volume12
Issue number2
DOIs
Publication statusPublished - Jan 1 1997
Externally publishedYes

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Pinus thunbergii
nutrient use efficiency
litterfall
nutrient uptake
nutrient availability
soil nutrient
soil nutrients
nutrients
nutrient
phosphorus
nitrogen
plant response
nutrient content
plantations
plantation
soil

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics

Cite this

Nutrient-uptake and nutrient-use efficiency of Pinus thunbergii Parl. along a topographical gradient of soil nutrient availability. / Enoki, Tsutomu; Kawaguchi, Hideyuki; Iwatsubo, Goro.

In: Ecological Research, Vol. 12, No. 2, 01.01.1997, p. 191-199.

Research output: Contribution to journalArticle

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