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Distributions Characteristics of Boron and Aluminum Contents in Soils of Salt Marshes in the Yellow River Estuary
Author(s): REN Peng, SUN Zhigao, ZHAO Quansheng, SUN Wenguang, SUN Wanlong, Institute of Geograpy, Key Laboratory of Humid Subtropical Eco-geographical Process, Ministry of Education, Fujian Normal University, College of Chemical Science and Engineering, Qingdao University, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research
Pages: 728-
734
Year: 2015
Issue:
6
Journal: Wetland Science
Keyword: boron; aluminum; soil; salt marshes; the Yellow River estuary;
Abstract: The distribution characteristics of boron and aluminum contents in the soils of salt marshes at 9 different vegetation communities, located in the salt marshes of the northern Yellow River estuary, were studied on May 3-6, 2009. The average contents of boron was(51.85 ± 11.52) mg/kg in the soils(0-60 cm depth),which was significant higher than that of the soil background value(42 mg/kg) in China and the loess area background value(45.1 mg/kg), but lower than that of Alluvial Plain of north China(56.2 mg/kg). The average content of aluminum was(45.15 ± 5.31) g/kg in the study area, which was significant lower than that of soil background value(66.55g/kg) in China, the Alluvial Plain of north China background value(63.95 g/kg)and the loess area background value(57.55 g/kg). Although the horizontal distributions of boron and aluminum contents showed the differences in the soils, the distribution features of boron and aluminum from land to sea were similar, and the variation were the medium variation or lower variation in horizontal direction. In vertical direction, boron and aluminum contents changed fluctuant in the soils. The contents of boron and aluminum had significantly positive correlation or significantly correlation with the organic matter, clay and slit,and significantly negative correlation with sand. The parent material determined the spatial distribution of boron and aluminum contents in the soils, soil organic matter and grain size were two major factors affecting their spatial distribution, and vegetation types, tidal inundation, sediment moisture and salinity also showed great influences on them.
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