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Nitrogen cycle of a typical Suaeda salsa marsh ecosystem in the Yellow River estuary.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mou, Xiaojie Sun, Zhigao Wang, Lingling Wang, Chuanyuan |
| Copyright Year | 2011 |
| 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/m2, respectively. The N translocation from aboveground parts to roots and from roots to soil were 2.042 and 0.076 g/m2, respectively. The N translocation from aboveground living bodies to litter was 0.497 g/m2, the annual N return from litter to soil was far less than 0.368 g/m2, and the net N mineralization in topsoil during the growing season was 0.033 g/m2. 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. |
| File Format | PDF HTM / HTML |
| DOI | 10.1016/S1001-0742(10)60530-X |
| Alternate Webpage(s) | http://ir.yic.ac.cn/bitstream/133337/4826/1/Nitrogen%20cycle%20of%20a%20typical%20Suaeda%20salsa%20marsh%20ecosystem%20in%20the%20Yellow%20River%20estuary.pdf |
| PubMed reference number | 22066219 |
| Alternate Webpage(s) | https://doi.org/10.1016/S1001-0742%2810%2960530-X |
| Journal | Medline |
| Volume Number | 23 |
| Issue Number | 6 |
| Journal | Journal of environmental sciences |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
