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《Acta Scientiae Circumstantiae》 2010-04
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The spatial distribution characteristics of soil nutrients in new-born coastal wetland in the Yellow River delta

YU Junbao1,2,CHEN Xiaobing1,SUN Zhigao1,XIE Wenjun2,MAO Peili1,WU Chunfa1,DONG Hongfang1,MU Xiaojie1,LI Yunzhao1,GUAN Bo1,SHAN Kai31. Laboratory of Coastal Wetland Ecology,Key Laboratory for Coastal Environment Processes,Yantai Institute of Coastal Zone Research,Chinese Academy of Sciences,Yantai 2640032. Shandong Key Laboratory of Eco-Environmental Science for Yellow River Delta,Binzhou University,Binzhou 2566003. Administration of Shandong Yellow-River-Delta National Nature Reserve,Dongying 257091  
Based on the distribution of vegetation,two transects from the Yellow River bank to a salt beach were selected in new-born coastal wetland in the core area of the Yellow River Delta National Nature Reserve to study the spatial distribution characteristics of soil nutrients. The results show that the average contents of TN,NH+4-N,NO-3-N,TOC,TS and TP in topsoil of new-born coastal wetland in Yellow River delta were 419.37 mg·kg-1、3.27 mg·kg-1、 0.87 mg·kg-1、3.43 g·kg-1、381.27 mg·kg-1 and 500.86 mg·kg-1,respectively. From river bank to salt beach,the soil nutrient contents of TN,NO-3-N,TOC and TS increased gradually,while the contents of TOC,TN,NH+4-Nand NO-3-N decreased gradually with depth in the soil profiles. The results of correlation analysis show that there are highly significant relationships between TOC and TS,NO-3-N as well as TN in soils. The soil salinity and pH are the determining factors for soil nutrient contents of TOC,TS,NO-3-N,TN and C/N ratio.
【Fund】: 中国科学院知识创新工程重要方向项目(No.KZCX2-YW-223);; 中国科学院百人计划项目;; 山东省科技攻关计划项目(No.2008GG20005006 2008GG3NS07005);; 国家自然基金项目(No.30770412)~~
【CateGory Index】: S158
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