論文

査読有り
2016年9月1日

Soil-nutrient availability and the nutrient-use efficiencies of forests along an altitudinal gradient on Yakushima Island, Japan

Ecological Research
  • Mana Mukai
  • ,
  • Shin ichiro Aiba
  • ,
  • Kanehiro Kitayama

31
5
開始ページ
719
終了ページ
730
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s11284-016-1381-8
出版者・発行元
SPRINGER JAPAN KK

The vegetation on Yakushima Island, Japan, grows on soils derived from Akahoya volcanic ash, released from the Kikai Caldera about 7300 years ago. The eruption was devastating and it is believed that primary succession and soil formation reinitiated across all altitudes at this point. We hypothesize that the concentrations of soil total phosphorus (P) and labile P fractions increase with increasing altitude because the soil formation has progressed less in upslope areas as a result of the cooler temperature and because of the ample P source of the volcanic ash. Conversely, we hypothesize that the concentration of soil inorganic nitrogen (N) decreases with increasing altitude. Available soil P and N would result in increasing P limitation downslope and increasing N limitation upslope, respectively. We studied soil P fractions and soil inorganic N, and P- and N-use efficiencies of the seven forests on Yakushima along an elevation gradient (170–1550 m a.s.l.). Contrary to our hypotheses, soil total P, labile soil P fractions, and inorganic N decreased with increasing altitude. The P- and N-use efficiencies of the forests were negatively correlated with the concentration of soil total active P (total P minus occluded P) and inorganic N, respectively. We suggest that progressive soil acidity and slower decomposition under cooler and wetter environments upslope must have dissolved the P contained in volcanic ash and accelerated P leaching. Forest ecosystems on Yakushima that show a distinct altitudinal zonation are, therefore, characterized by increasing P and N shortage with increasing altitude.

リンク情報
DOI
https://doi.org/10.1007/s11284-016-1381-8
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000382141400013&DestApp=WOS_CPL
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84982966090&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=84982966090&origin=inward
ID情報
  • DOI : 10.1007/s11284-016-1381-8
  • ISSN : 0912-3814
  • eISSN : 1440-1703
  • SCOPUS ID : 84982966090
  • Web of Science ID : WOS:000382141400013

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