Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
| 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
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| Source Publication | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
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| ISSN | 1001-0742 |
| 2011 | |
| Volume | 23Issue:6Pages:958-967 |
| Keyword | Compartment Model Nitrogen Biological Cycle Suaeda Salsa Yellow River Estuary |
| Contribution Rank | [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 |
| Corresponding Author | 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 |
| Department | 滨海湿地实验室 |
| Abstract | 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. |
| Subtype | Article |
| Funding Organization | 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] |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | CALAMAGROSTIS-ANGUSTIFOLIA WETLAND ; SANJIANG PLAIN ; NORTHEAST CHINA ; NUTRIENT LIMITATION ; SOIL ; DYNAMICS ; GROWTH ; PHOSPHORUS ; MINERALIZATION ; DECOMPOSITION |
| WOS Research Area | Environmental Sciences & Ecology |
| WOS ID | WOS:000292120200011 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.yic.ac.cn/handle/133337/4825 |
| Collection | 中科院海岸带环境过程与生态修复重点实验室 中科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 |
| Affiliation | 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 |
| Recommended Citation 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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