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Allocation of four mineral elements in dominant plants of subtropical evergreen broad-leaved forest *(PDF)

Chinese Journal of Applied & Environmental Biology[ISSN:1006-687X/CN:51-1482/Q]

Issue:
2020 01
Page:
1-13
Research Field:
Articles
Publishing date:

Info

Title:
Allocation of four mineral elements in dominant plants of subtropical evergreen broad-leaved forest *
Author(s):
WANG Mianzhi1 ZHANG Xiaorong2 MOU Ling1 YOU Chengming1 JIANG Long1 LIU Yiling1 LIU Qun1 ZHU Liang1 GAO Weilong1 XU Zhenfeng1 & TAN Bo 1**
1 Forestry Ecological Engineering in the Upper Reaches of Yangtze River Key Laboratory of Sichuan Province, Institute of Ecology and Forestry, Sichuan Agricultural University, Chengdu 611130, China
2 Western Sichuan Forestry Bureau, Lixian 623102, China
Keywords:
mineral elements plant functional groups plant organs subtropical forest
CLC:
-
PACS:
DOI:
10.19675/j.cnki.1006-687x.2019.03048
DocumentCode:

Abstract:
The absorption and utilization of mineral elements by plants is an important indicator to assess the nutrient status of forest communities. In order to understand the distribution pattern of mineral elements in the subtropical evergreen broad-leaved forest, the dominant plants of subtropical evergreen broad-leaved forest in the Rainy Area of West China were investigated in this study. The roots, stems, barks, twigs and leaves of trees, shrubs and herbs were sampled to measure four mineral elements (K, Ca, Na and Mg) in dominant plants in August 2017. The average concentrations of these mineral elements ranked as Ca > K > Mg > Na. The concentrations of mineral elements differed significantly among plant functional groups. The lowest K and Mg concentrations were observed in tree species, while the highest Ca and K concentrations were observed in shrubs species and herbs species, respectively. However, Na concentration was not significant among plant functional groups. Moreover, the concentrations of mineral elements in the same plant organs varied obviously among plant functional groups. The root K, Ca and Mg concentrations were lowest in trees species, while the leaf K, Ca, Na and Mg concentrations were highest in shrubs species, and the four mineral elements concentrations in twig were not significant between trees species and shrubs species. Furthermore, the plant organs significantly affected the concentrations of mineral elements in the same plant functional groups. The bark Ca concentration was lowest in trees species, whereas the twig K, Ca, and Mg concentrations were lowest in shrubs species, and the differences between root and leaf mineral elements concentrations were not significant in herbs species. Additionally, the K concentration was positively correlated with the Mg and Na concentration, as is the concentration of Ca and Mg. And the Na concentration was negatively correlated with the Ca and Mg concentration, but the correlation between the K and Ca concentration was not significant. These results suggest that the allocation of mineral elements in subtropical evergreen broad-leaved forests is not only affected by plant functional groups and their organs, but also by interactions among mineral elements.

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Last Update: 2019-07-05