Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China

doi:10.1016/j.catena.2017.03.021

CORC > 武汉植物园 > 中国科学院武汉植物园

	Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China
	Cheng, Xiaoli 3; Yang, Wen 1,2; Zhao, Hui 4; Leng, Xin 1,2; An, Shuqing 1,2,4
刊名	CATENA
	2017-09-01
卷号	156 页码:281-289
关键词	Carbon-13 and nitrogen-15 Chronosequence Decomposition of organic matter Density and size fractionation Nitrogen cycling Particulate organic matter
ISSN号	0341-8162
DOI	10.1016/j.catena.2017.03.021
英文摘要	Plant invasion has been reported to modify ecosystem carbon (C) and nitrogen (N) cycling processes and pools. The aims of this work were to identify the consequences of plant invasion on C and N dynamics in soil organic matter (SOM) and its fractions following invasion chronosequence. In this study, we investigated the soil C and N contents and the delta C-13 and delta N-15 values of the SOM, free light fraction (LF), infra-aggregate particulate organic matter (iPOM) and mineral-associated organic matter (mSOM) in invasive 6-, 10-, 17- and 20-year-old Spartina alterniflora communities and compared with bare flat land in a coastal wetland of eastern China. S. alternifiora invasion significantly increased soil organic carbon (SOC) and soil organic nitrogen (SON) contents in SOM fractions compared with the bare flat land. The SOC, iPOM-C and iPOM-N progressively increased, but the SON, mSOM-C and mSOM-N did not significantly change following S. alterniflora invasion chronosequence. The proportion of C in iPOM gradually increased, whereas that in mSOM decreased following S. alterniflora invasion chronosequence except for the 20-year-old S. alterniflora soil. The highest proportion of S. alterniflora-derived C in SOM and its fractions was found in 17-year-old soil covered by S. alternifiora. The decay rate of old C decreased and the mean residence time of C increased in SOM and its fractions following S. alterniflora invasion chronosequence. The delta N-15 values of soil under S. alterniflora were more enriched than were those in bare flat land, whereas the delta N-15 values depleted following invasion chronosequence. Our results show that S. alterniflora invasion significantly altered SOC dynamics following invasion chronosequence by changing C physical distribution in SOM, S. alterniflora-derived C input and C decomposition, ultimately having a greater impact on SOC incorporation relative to SON accumulation in a coastal wetland of eastern China.
资助项目	National Natural Science Foundation of China[31600427] ; National Basic Research Program of China[2013CB430400] ; China Postdoctoral Science Foundation[2016M590440] ; Fundamental Research Funds for the Central Universities[020814380042] ; Jiangsu Yancheng Wetland National Nature Reserve for Rare Birds
WOS研究方向	Geology ; Agriculture ; Water Resources
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000404305700028
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1323]
专题	中国科学院武汉植物园
通讯作者	Cheng, Xiaoli; Leng, Xin
作者单位	1.Nanjing Univ, Sch Life Sci, 163 Xianlin Rd, Nanjing 210023, Jiangsu, Peoples R China 2.Nanjing Univ, Inst Wetland Ecol, 163 Xianlin Rd, Nanjing 210023, Jiangsu, Peoples R China 3.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Peoples R China 4.Nanjing Univ, Ecol Res Inst Changshu NJUecoRICH, Changshu 215500, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Cheng, Xiaoli,Yang, Wen,Zhao, Hui,et al. Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China[J]. CATENA,2017,156:281-289.
APA	Cheng, Xiaoli,Yang, Wen,Zhao, Hui,Leng, Xin,&An, Shuqing.(2017).Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China.CATENA,156,281-289.
MLA	Cheng, Xiaoli,et al."Soil organic carbon and nitrogen dynamics following Spartina alterniflora invasion in a coastal wetland of eastern China".CATENA 156(2017):281-289.