SEASONAL AND ANNUAL VARIATIONS OF PHOSPHORUS, CALCIUM, POTASSIUM AND MANGANESE CONTENTS IN DIFFERENT CROSS-SECTIONS OF PICEA-ABIES (L) KARST NEEDLES AND QUERCUS-RUBRA L LEAVES EXPOSED TO ELEVATED CO2

被引：14

作者：

LETHIEC, D

DIXON, M

LOOSVELDT, P

GARREC, JP

机构：

[1] Unité Ecophysiologie Forestière, Equipe Pollution Atmosphérique, INRA, Centre de Recherches Forestières de Nancy, Champenoux

来源：

TREES-STRUCTURE AND FUNCTION | 1995年 / 10卷 / 02期

关键词：

PICEA ABIE; QUERCUS RUBRA; NUTRIENTS; CARBON DIOXIDE; SEASONAL VARIATION;

D O I：

10.1007/BF00192184

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

Norway spruce and red oak trees were planted directly into the soil and enclosed in open-top chambers. For 2 years the trees were exposed to both ambient and elevated CO2 concentrations (700 mu mol mol(-1)) and during this time variations in nutrient concentrations were studied. CO2-treated plants had decreases in global leaf concentrations of nitrogen, potassium, calcium and manganese for both species. When different areas of the foliage were analysed however, the response showed much variability between the respective sites and between species. Furthermore the nutrient concentrations changed differently as the plant material aged and this change showed inter-treatment differences. These results show how it may be important to analyse plant material of different ages and at different cell sites when studying nutrient levels.

引用

页码：55 / 62

页数：8

共 43 条

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