Foulds W
Department of Science Education, Edith Cowan University, Churchlands Campus, Western Australia 6018, Australia.
New Phytol. 1993 Nov;125(3):529-546. doi: 10.1111/j.1469-8137.1993.tb03901.x.
The element found in highest concentration in the shoots of the South-western Australian plants surveyed is N followed by K ≤ Ca ≤ Cl ≤ Mg ≤ P ≤ Mn ≤ Zn ≤ Cu. The oligotrophic families (mainly primitive Australian pioneer families Proteaceae, Casuarinaceae, Restionaceae and Epacridaceae) have the lowest nutrient concentrations. The nitrogen-fixing Mimosaceae and Papilionaceae have the highest N concentrations though the nitrogen-fixing Casaurinaceae have relatively low N concentrations. The native shrubs have lower tissue concentrations than the introduced species. Certain families possess a great variation in the concentration of tissue Mn (e.g. Proteaceae, Casuarinaceae) with certain individuals containing high concentrations compared to the average South-west Australian species. Increased amounts of soil nutrients can cause an increase in shoot concentration of the species found growing there, e.g. rich habitats (limestone heath) tend to have higher concentrations than those found on depleted habitats (sandplain heaths). There was no correlation found between shoot concentrations and mean annual rainfall.
在所调查的澳大利亚西南部植物的嫩枝中，含量最高的元素是氮，其次是钾≤钙≤氯≤镁≤磷≤锰≤锌≤铜。贫营养科（主要是澳大利亚原始先锋科，如山龙眼科、木麻黄科、帚灯草科和澳石南科）的养分浓度最低。固氮的含羞草科和豆科植物的氮含量最高，不过固氮的木麻黄科植物的氮含量相对较低。本地灌木的组织浓度低于引进物种。某些科的组织锰浓度变化很大（如山龙眼科、木麻黄科），与澳大利亚西南部物种的平均水平相比，某些个体的锰含量很高。土壤养分增加会导致生长在那里的物种嫩枝浓度增加，例如，肥沃的栖息地（石灰岩荒地）的浓度往往高于贫瘠栖息地（沙质平原荒地）的浓度。未发现嫩枝浓度与年均降雨量之间存在相关性。
