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题名: Changes of P, Ca, Al and Fe contents in fringe marshes along a pedogenic chronosequence in the Pearl River estuary, South China
作者: Xiao, Rong1; Bai, Junhong1; Zhang, Honggang1; Gao, Haifeng1; Liu, Xinhui1; Wilkes, Andreas2
刊名: CONTINENTAL SHELF RESEARCH
关键词: Fringe marsh ; C. malaccensis ; Soil nutrients ; Biological concentration factor ; Translocation factor ; Pedogenic time
英文摘要: Soil and plant samples were collected in four fringe marsh zones (i.e., A, B. C and D zones) along a pedogenic chronosequence in the Pearl River estuary in the Spring of 2009. Samples were subjected to a total digestion technique and analyzed for P, Ca, Al and Fe in order to study the changes of nutrient contents, storages in soils and their bioavailabilities to wetland plants (e.g. Cyperus malaccensis) in four zones. Results showed that soil Ca increased with depth along soil profiles, while P, Al and Fe generally kept constant in soil profiles in four zones. Al and Fe contents in the top 10 cm soils showed significant decreases from D to A zone, while a significant increase in Ca contents (P < 0.05). Significant increases along pedogenic chronosequence for P, Al and Fe at 30-40 cm soil horizons were also observed. Ca was mainly accumulated in plant aboveground parts; Al and Fe were accumulated in the belowground parts; while P was homogenously distributed among the tissues of C malaccensis. C malaccensis in D zone had lower Bio-concentration factors (BCFs) of P in the shoots and Al and Fe in the roots, and higher values of Ca in the shoots than those in older zones (P < 0.05). Compared to Al and Fe, both Ca and P had relatively higher translocation capacities for C. malaccensis, while only lower TFs for P and higher values for Al and Fe in D zone were observed than those in A and B zones (P < 0.05). Except for Al with no significant changes, the total BCFs for P and Fe showed an increasing trend with soil ages, while a decreasing trend for Ca. The total bio-storage factors (TBSFs) of P and Ca declined with the pedogenic time, whereas an increase for Fe. The results of this study can contribute to the wetland conservation and management in the Pearl River estuarine region. (C) 2011 Elsevier Ltd. All rights reserved.
出版日期: 2011-04-15
卷号: 31, 期号:6, 页码:739-747
DOI标识: 10.1016/j.csr.2011.01.013
语种: 英语
收录类别: SCI
学科分类: Oceanography
ISSN号: 0278-4343
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/5331
Appears in Collections:植物化学与西部植物资源持续利用国家重点实验室_期刊论文

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作者单位: 1.Beijing Normal Univ, State Key Lab Water Environm Simulat, Sch Environm, Beijing 100875, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Ctr Mt Ecosyst Studies, Beijing 100864, Peoples R China

Recommended Citation:
Xiao, R; Bai, JH; Zhang, HG; Gao, HF; Liu, XH; Wilkes, A.Changes of P, Ca, Al and Fe contents in fringe marshes along a pedogenic chronosequence in the Pearl River estuary, South China,CONTINENTAL SHELF RESEARCH,2011,31(6):739-747
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