[Spatial distribution characteristics of Fe and Mn contents in the new-born coastal marshes in the Yellow River estuary].
The spatial distribution characteristics of Fe and Mn contents in soils of nine different vegetation communities, located in the new-born marshes of the northern Yellow River estuary, were studied in May 2009. The results showed that the horizontal distributions of Fe and Mn contents showed an increasing tendency from Sparganiaceae-Potentilla supina marsh to bare flat. The vertical distribution characteristics of Fe and Mn contents in different marsh soils fluctuated significantly with the vegetation succession. The soil parent materials determined the Fe, Mn contents in the new-born marshes, and seawater, vegetations and soil fine particle also had important influences on their contents. Further analysis showed that Fe contents had significant positive correlation with Mn contents (P < 0.01). Fe, Mn contents also showed significant correlations with silt, clay, TN, NO3(-) -N and organic matter (P < 0.05), indicating that Fe and Mn had close relationships with nitrogen, and the contents of soil fine particles and organic matter were the dominant factors affecting the distribution of Fe and Mn in soils. In addition, the Fe contents ranged from 16.49 g x kg(-1) to 33.11 g x kg(-1) and the average was 22.54 g x kg(-1), which was close to the Fe contents in the tidal marshes of north Jiangsu, the Loess Plateau and the China soil background value, but slightly lower than those in the marshes of the Yangtse River estuary, the mangrove swamps and inland lake wetland. The Mn contents ranged from 305.87 mg x kg(-1) to 711.39 mg x kg(-1) and the average was 451.09 mg x kg(-1), which was lower than the Mn contents in the Loess Plateau and the China soil background value. Hydrology and Water Resources Survey Bureau of the Yellow River Estuary, Dongying 257091, China)
Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. swg1108@126.com
Wen-Guang
WG
Sun
Key Laboratory of Disaster Monitoring and Mechanism Simulating of Shaanxi Province, Baoji University of Arts and Sciences, Baoji 721013, China.
Zhuo-Ting
ZT
Gan
Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
Zhi-Gao
ZG
Sun
Hydrology and Water Resources Survey Bureau of the Yellow River Estuary, Dongying 257091, China.
Li-Li
LL
Li
Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta, Binzhou University, Binzhou 256603, China.
Jing-Kuan
JK
Sun
Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
Wan-Long
WL
Sun
Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
Xiao-Jie
XJ
Mou
Shandong Provincial Key Laboratory of Coastal Zone Environmental Processes, Key Laboratory of Coastal Zone Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China.
Ling-Ling
LL
Wang
D002681:China; D063366:Estuaries; D007501:Iron / Q000032:analysis*; D008345:Manganese / Q000032:analysis*; D009584:Nitrogen / Q000737:chemistry; D045483:Rivers / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry; D012987:Soil / Q000737:chemistry; D053833:Wetlands
D012987:Soil; D008345:Manganese; D007501:Iron; D009584:Nitrogen