多変量解析的手法による茨城県阿字ケ浦砂丘の植生と土壤環境の解析 : II.オーディネーション

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KACHI, Naoki (Div. Environ. Biol., Nat. Inst. Environ. Studies, Yatabe, Ibaraki) & HIROSE, Tadaki (Dep. Bot., Fac. Sci., Univ. Tokyo, Tokyo). 1979. Multivariate approaches to the plant communities related with edaphic factors in the dune system at Azigaura, Ibaraki Pref. II. Ordination. Jap. J. Ecol., 29 : 359-368. An ordination method of reciprocal averaging proposed by HILL was used in the study of the dune vegetation at Azigaura, Ibaraki Pref. and its relation to the edaphic environment was examined. Two types of vegetation pattern were recognized ; the one represented the changes of vegetation from the coastline to the inland and the other represented that in the inland dune area with a topographical gradient from concave areas to convex dunes. The former pattern of vegetation showed positive correlations with organic matter content and soil surface hardness and negative correlations with exchangeable cations. These environmental trends were considered to reflect the chronosequence of dune stabilization and soil formation which result from the decrease in salt spray, the leaching of minerals and the accumulation of organic matter. The latter pattern of vegetation showed positive correlations with organic matter content and mineral nutrients and a negative correlation with soil moisture. These environmental trends were related to the toposequence in the inland dune area-from moist, rather infertile low-lying areas to well drained, fertile dunes.
1979-12-30

多変量解析的手法による茨城県阿字ケ浦砂丘の植生と土壤環境の解析 : II.オーディネーション

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