[Spatial distribution characteristics of organic carbon in the soil-plant systems in the Yellow River estuary tidal flat wetland].
Well-understand the organic carbon status in the Yellow River delta is the most important for studying the biogeochemical processes of the muddy-sandy coastal wetland and ecological restoration. The spatial distribution characteristics and its impact factors of organic carbon in the plant-soil systems of new-born tidal flat wetland in the Yellow River estuary were studied. The results showed that the difference of plant organic carbon content in different plant communities were not obvious, however significant difference of the plant organic carbon density was observed. Moreover, the M-shaped spatial distribution of the plant organic carbon density, which was similar to the plant biomass, was found in the study. The organic carbon contents in top soils were varied from 0.75 to 8.35 g x kg(-1), which was much lower than that in the typical freshwater marsh wetlands ecosystem. The spatial distribution trend of soil organic carbon density was similar to the soil organic carbon. The correlation analysis showed that soil organic carbon density was negatively correlated with pH, and positively correlated with TN, C/N and salinity. However, the correlations of plant organic carbon density with the soil organic carbon density, TN, C/N, pH and salinity were not significant.
Dong
Hong-Fang
HF
Key Laboratory of Coastal Environment Processes, Laboratory of Coastal Wetland Ecology, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. xxls1984@126.com
Yu
Jun-Bao
JB
Sun
Zhi-Gao
ZG
Mu
Xiao-Jie
XJ
Chen
Xiao-Bing
XB
Mao
Pei-Li
PL
Wu
Chun-Fa
CF
Guan
Bo
B
D001673:Biodegradation, Environmental; D002244:Carbon / Q000032:analysis*; D002681:China; D004784:Environmental Monitoring; D009930:Organic Chemicals / Q000032:analysis*; D010944:Plants / Q000737:chemistry*; D045483:Rivers; D012987:Soil / Q000032:analysis; D012989:Soil Pollutants / Q000032:analysis*; D053833:Wetlands
D009930:Organic Chemicals; D012987:Soil; D012989:Soil Pollutants; D002244:Carbon