Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary

	Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary
	Mou, Xiaojie 1,2,3; Sun, Zhigao1 ; Wang, Lingling 1,3; Wang, Chuanyuan1
发表期刊	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN	1001-0742
	2011
卷号	23 期号:6 页码:958-967
关键词	Compartment Model Nitrogen Biological Cycle Suaeda Salsa Yellow River Estuary
产权排序	[Mou, Xiaojie; Sun, Zhigao; Wang, Lingling; Wang, Chuanyuan] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China; [Mou, Xiaojie] Chinese Acad Sci, NE Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130012, Peoples R China; [Mou, Xiaojie; Wang, Lingling] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
通讯作者	Sun, ZG, Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China.xjmou@163.com ; zgsun@yic.ac.cn
作者部门	滨海湿地实验室
英文摘要	The nitrogen (N) biological cycle of the Suaeda salsa marsh ecosystem in the Yellow River estuary was studied during 2008 to 2009. Results showed that soil N had significant seasonal fluctuations and vertical distribution. The N/P ratio (15.73 +/- 1.77) of S. salsa was less than 16, indicating that plant growth was limited by both N and P. The N absorption coefficient of S. salsa was very low (0.007), while the N utilization and cycle coefficients were high (0.824 and 0.331, respectively). The N turnover among compartments of S. salsa marsh showed that N uptake from aboveground parts and roots were 2.539 and 0.622 g/m(2), respectively. The N translocation from aboveground parts to roots and from roots to soil were 2.042 and 0.076 g/m(2), respectively. The N translocation from aboveground living bodies to litter was 0.497 g/m(2), the annual N return from litter to soil was far less than 0.368 g/m(2), and the net N mineralization in topsoil during the growing season was 0.033 g/m(2). N was an important limiting factor in S. salsa marsh, and the ecosystem was classified as unstable and vulnerable. S. salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat, and the nutrient enrichment due to N import from the Yellow River estuary would be a potential threat to the S. salsa marsh. Excessive nutrient loading might favor invasive species and induce severe long-term degradation of the ecosystem if human intervention measures were not taken. The N quantitative relationships determined in our study might provide a scientific basis for the establishment of effective measures.; The nitrogen (N) biological cycle of the Suaeda salsa marsh ecosystem in the Yellow River estuary was studied during 2008 to 2009. Results showed that soil N had significant seasonal fluctuations and vertical distribution. The N/P ratio (15.73 +/- 1.77) of S. salsa was less than 16, indicating that plant growth was limited by both N and P. The N absorption coefficient of S. salsa was very low (0.007), while the N utilization and cycle coefficients were high (0.824 and 0.331, respectively). The N turnover among compartments of S. salsa marsh showed that N uptake from aboveground parts and roots were 2.539 and 0.622 g/m(2), respectively. The N translocation from aboveground parts to roots and from roots to soil were 2.042 and 0.076 g/m(2), respectively. The N translocation from aboveground living bodies to litter was 0.497 g/m(2), the annual N return from litter to soil was far less than 0.368 g/m(2), and the net N mineralization in topsoil during the growing season was 0.033 g/m(2). N was an important limiting factor in S. salsa marsh, and the ecosystem was classified as unstable and vulnerable. S. salsa was seemingly well adapted to the low-nutrient status and vulnerable habitat, and the nutrient enrichment due to N import from the Yellow River estuary would be a potential threat to the S. salsa marsh. Excessive nutrient loading might favor invasive species and induce severe long-term degradation of the ecosystem if human intervention measures were not taken. The N quantitative relationships determined in our study might provide a scientific basis for the establishment of effective measures.
文章类型	Article
资助机构	National Natural Science Foudation of China [20975089]; Chinese Academy of Sciences [KZCX2-EW-206]; Department of Science and Technology of Shandong Province [2008GG20005005, BS2009DX006]; Department of Science and Technology of Yantai City of China [2007156]
收录类别	SCI
语种	英语
关键词[WOS]	CALAMAGROSTIS-ANGUSTIFOLIA WETLAND ; SANJIANG PLAIN ; NORTHEAST CHINA ; NUTRIENT LIMITATION ; SOIL ; DYNAMICS ; GROWTH ; PHOSPHORUS ; MINERALIZATION ; DECOMPOSITION
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000292120200011
引用统计	被引频次：28[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/4825
专题	中国科学院海岸带环境过程与生态修复重点实验室中国科学院海岸带环境过程与生态修复重点实验室_滨海湿地实验室
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Shandong Prov Key Lab Coastal Zone Environm Proc, Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China 2.Chinese Acad Sci, NE Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130012, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Mou, Xiaojie,Sun, Zhigao,Wang, Lingling,et al. Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(6):958-967.
APA	Mou, Xiaojie,Sun, Zhigao,Wang, Lingling,&Wang, Chuanyuan.(2011).Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(6),958-967.
MLA	Mou, Xiaojie,et al."Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.6(2011):958-967.

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