|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Geochemical records of phosphorus in Jiaozhou Bay sediments—Impli-cations for environmental changes in recent hundred years显示文摘Phosphorus is a key element and plays an important role in global biogeochemical cycles. The evolution of sedimentary environment is also influenced by phosphorus concentrations and fractions as well as phosphate sorption characteristics of the marine sediments. The geochemical characteristics of phosphorus and their environmental records were presented in Jiaozhou Bay sediments. Profiles of different forms of phosphorus were measured as well as the roles and vertical distributions of phosphorus forms in response to sedimentary environment changes were investigated. The results showed that inorganic phosphorus (IP) was the major fraction of total phosphorus (TP); phosphorus which is bound to calcium, iron and occluded phosphorus, as well as the exchangeable phosphorus were the main forms of IP, especially calcium-phosphorus, including detrital carbonate-bound phosphorus (Det-P) and authigenic apatite-bound phosphorus (ACa-P), are the uppermost constituent of IP in Jiaozhou Bay sediments. Moreover, the lead-210 chronology technology was employed to estimate how much phosphorus was buried ultimately in sediments. And the research showed that the impacts of human activities have increased remarkably in recent years especially between the 1980s and 2000. According to research, the development of Jiaozhou Bay environment in the past hundred years can be divided into three stages: (1) before the 1980s characterized by the relatively low sedimentation rate, weak land-derived phosphorus inputs and low anthropogenic impacts; (2) from the 1980s to around 2000, accelerating in the 1990s, during which high sedimentation rates, high phosphorus abundance and burial fluxes due to the severe human activities impacted on the whole environmental system; (3) after 2000, the period of the improvement of environment, the whole system has been improved including the decreasing sedimentation rates, concentration and the burial fluxes of phosphorus. | DAI Jicui SONG Jinming LI Xuegang YUAN Huamao ZHENG Guoxia LI Ning | 2007 | Acta Oceanologica Sinica2007，26，4： | 8 |
| 2 | Immunomodulation and antitumor activity of κ-carrageenan oligosaccharides显示文摘 | Huamao Yuan Jinming Song Xuegang Li Ning Li Jicui Dai | 2005 | Cancer Letters2005，，2： | 1 |
| 3 | Nafion-sulfonated organosilica composite membrane for all vanadium redox flow battery显示文摘 | Teng Xiangguo Lei Jie Gu Xuecai Dai Jicui Zhu Yongming Li Faqiang | | 0，，： | 1 |
| 4 | Iron and inorganic carbon in Liaodong Gulf sediments of Bohai Sea in China显示文摘Iron in seawater is an essential trace metal for phytoplankton that plays an important role in the marine carbon cycle. But most studies focused on oceanic iron fertilization in high nutrient low chlorophyll (HNLC) seawaters. A study of inorganic carbon (IC) forms and its influencing factors was presented in Liaodong Gulf sediments, and especially the influence of iron was discussed in detail. Inorganic carbon in Liaodong Gulf sediments was divided into five forms: NaCl, NH_ 3·H_ 2O, NaOH, NH_ 2OH·HCl and HCl. The concentration of NaCl and NaOH forms were similar and they only occupied the minority of total inorganic carbon (TIC). However, NH_ 3·H_ 2O, NH_ 2OH·HCl and HCl forms were the principal forms of TIC and accounted for more than 80% of TIC. Especially, the percentage of NH_ 3·H_ 2O form was much higher than that in the Changjiang River Estuary and Jiaozhou Bay sediments. All forms of inorganic carbon were influenced by organic carbon,pore water, iron, pH, redox potential(Eh) and sulfur potential(Es) in sediments, moreover, the influences had different characteristics for different IC forms. However, the redox reactions of iron affected mainly active IC forms. Iron had little effect on NH_ 2OH·HCl and HCl forms of IC which were influenced mainly by pH. Iron had a stronger influence on NaCl, NaOH and NH_ 3·H_ 2O forms of IC; the influence of Fe 2+ was higher than Fe 3+ and its effect on NH_ 3·H_ 2O form was stronger than on NaCl and NaOH forms. | NIU Lifeng LI Xuegang SONG Jinming YUAN Huamao LI Ning DAI Jicui | 2006 | Acta Oceanologica Sinica2006，25，4： | 1 |
| 5 | Environmen- tal Changes Reflected by Sedimentary Geochemistry in Recent Hundred Years of Jiaozhou Bay, North China 显示文摘 | Dai Jicui Song Jinming Li Xuegang | 2007 | Environmental Pollution2007，145，： | 1 |
| 6 | Immunomodulation and antitumor activity of κ-carrageenan oligosaccharides显示文摘 | Huamao Yuan Jinming Song Xuegang Li Ning Li Jicui Dai | 2005 | Cancer Letters2005，，2： | 1 |
| 7 | Analysis of the Trade Dispute of Chinese Agricultural Products and Its Countermeasures显示文摘 | Jicui Li | 2005 | China-USA Business Review2005，4，3： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员