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Authors Lu, QQ; Bai, JH; Zhang, GL; Zhao, QQ; Wu, JJ
Author Full Name Lu, Qiongqiong; Bai, Junhong; Zhang, Guangliang; Zhao, Qingqing; Wu, Jianjun
Title Spatial and seasonal distribution of carbon, nitrogen, phosphorus, and sulfur and their ecological stoichiometry in wetland soils along a water and salt gradient in the Yellow River Delta, China
Source PHYSICS AND CHEMISTRY OF THE EARTH
Language English
Document Type Article
Author Keywords Coastal wetland; Carbon; Nitrogen; Phosphorous; Sulfur; C:N:P:S
Keywords Plus ORGANIC-CARBON; NORTHEAST CHINA; SANJIANG PLAIN; MICROBIAL BIOMASS; MINERAL-SOIL; MARSH SOILS; LAND-USE; FOREST; RATIO; ECOSYSTEMS
Abstract Top soils (0-10 cm) were collected in three sampling belts during four seasons in 2014, including bare land (HN1), Calamagrostis epigeios (HN2), Typha orientalis (HN3), Phragmites australis (HN4), Tamarix chinensis (HN5) and Suaeda salsa (HN6) along a water and salinity gradient in the Yellow River Delta, China. Soil organic carbon (SOC), total nitrogen (TN), total phosphorous (TP), total sulfur (TS) and their ecological stoichiometry were measured to investigate their seasonal and horizontal distribution patterns, as well as their important influencing factors such as electric conductivity (EC) and water content (WC). Our results showed that the contents of SOC and TN exhibited similar changing tendency along the water and salinity gradient. The TP contents followed the order HN5 approximate to HN2 > HN3 approximate to HN6 > HN4 > HN1. TS levels generally increased with increasing salinity from HN1 to HN6. The higher levels of SOC and TP were mostly observed in October and August, respectively, while the seasonal variations in TN were heterogeneous under different plant covers. TS contents were lower in August compared with other sampling periods except for HN4. The mean values of the C/N, C/P and C/S ratios along a water-salinity gradient ranged from 26 to 72, 20 to 74, and 61 to 292, respectively. Generally, higher C/P ratios were observed in sampling sites with plant covers in October expect for HN1, whereas they were lower in January or August. SOC, TN and TP were significantly positively correlated with soil organic matter (SOM), silt, WC and cation exchange capacity (CEC) (p < 0.05), whereas TS showed a positive correlation with EC and cations content (p > 0.05). Bulk density (BD) had a great influence on C/N ratio, C/P ratio were mainly effected by SOM, EC and silt, while C/S ratio showed a significant negative correlation with BD, EC, K+, Na+, and Mg2+ (p < 0.05).
Author Address [Lu, Qiongqiong; Bai, Junhong; Zhang, Guangliang; Zhao, Qingqing] Beijing Normal Unvers, Sch Enivronment, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China; [Wu, Jianjun] Beijing Normal Univ, Fac Geog Sci, Beijing 100875, Peoples R China
Reprint Address Bai, JH (corresponding author), Beijing Normal Unvers, Sch Enivronment, State Key Lab Water Environm Simulat, Beijing 100875, Peoples R China.
E-mail Address junhongbai@163.com
ResearcherID Number Bai, Junhong/V-1993-2019
ORCID Number Bai, Junhong/0000-0003-2613-2143
Funding Agency and Grant Number National Key R & D Program of China [2017YFC0505906]; Innovative Research Group of the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51721093]; National Natural Science FoundationNational Natural Science Foundation of China (NSFC) [51639001]; Interdiscipline Research Funds of Beijing Normal University
Funding Text This study was financially supported by the National Key R & D Program of China (no. 2017YFC0505906), the Innovative Research Group of the National Natural Science Foundation of China (no. 51721093), the National Natural Science Foundation (nos. 51639001) and the Interdiscipline Research Funds of Beijing Normal University. The authors acknowledge all colleagues for their contributions to the fieldwork.
Times Cited 14
Total Times Cited Count (WoS, BCI, and CSCD) 19
Publisher PERGAMON-ELSEVIER SCIENCE LTD
Publisher City OXFORD
Publisher Address THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
ISSN 1474-7065
29-Character Source Abbreviation PHYS CHEM EARTH
ISO Source Abbreviation Phys. Chem. Earth
Publication Date APR
Year Published 2018
Volume 104
Beginning Page 9
Ending Page 17
Digital Object Identifier (DOI) 10.1016/j.pce.2018.04.001
Page Count 9
Web of Science Category Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources
Subject Category Geology; Meteorology & Atmospheric Sciences; Water Resources
Document Delivery Number GG1YY
Unique Article Identifier WOS:000432487400003
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