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Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary
Mou, Xiaojie1,2,3; Sun, Zhigao1; Wang, Lingling1,3; Wang, Chuanyuan1
2011
发表期刊JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
卷号23期号:6页码:958-967
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
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.
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
关键词Compartment Model Nitrogen Biological Cycle Suaeda Salsa Yellow River Estuary
作者部门滨海湿地实验室 
学科领域Environmental Sciences
项目资助者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
关键词[WOS]CALAMAGROSTIS-ANGUSTIFOLIA WETLAND ; SANJIANG PLAIN ; NORTHEAST CHINA ; NUTRIENT LIMITATION ; SOIL ; DYNAMICS ; GROWTH ; PHOSPHORUS ; MINERALIZATION ; DECOMPOSITION
文章类型Article
语种英语
WOS研究方向Environmental Sciences & Ecology
WOS记录号WOS:000292120200011
引用统计
被引频次:13[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/133337/4826
专题滨海湿地实验室
中科院海岸带环境过程与生态修复重点实验室
山东省海岸带环境过程重点实验室
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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