【摘 要】
：
Spatial and temporal distributions of nutrients (N and P) and heavy metals (Cu, Zn, Pb and Cd) in the intertidal sediments at Dongtan wetland of the Changjiang
【机 构】
：
Key and Open Laboratory of Marine and Estuarine Fishery of Ministry of Agriculture
论文部分内容阅读
Spatial and temporal distributions of nutrients (N and P) and heavy metals (Cu, Zn, Pb and Cd) in the intertidal sediments at Dongtan wetland of the Changjiang River (Yangtze River) Estuary were examined by laying one transect running seaward to landward during January, April, June, August and October of 2005. Total nitrogen (TN) and heavy metal concentrations in the intertidal sediment showed an increasing trend from open bare flat to the high marsh, with the maximum concentrations in the high marsh and the minimum values in open bare flat. In contrast, sediment total phosphorus (TP) concentrations changed little among sampling sites. One-way ANOVA found that there were significantly temporal variations of nutrients and heavy metals concentrations in the intertidal sediment (P
其他文献
In order to investigate the influence factors of zero excess activated sludge (EAS) process by ozona tion, a 100 L membrane bioreactor coupled with a sludge ozo
Interdecadal and interannual variations of saline-alkali land area in Qianan County, Jilin Province, China were comprehensively analyzed in this paper by means
This study sought to contribute to an improved understanding of soil erosion and redistribution on Mediterranean agricultural land,where traditional soil conser
In order to improve the yield and stability of ferrate in solution, dissolved Fe (VI) prepared with NaOH and KOH respectively was compared in this study. The re
A genetic-fuzzy HEV control strategy based on driving cycle recognition (DCR) was built. Six driving cycles were selected to represent different traffic conditi
采用实时荧光定量PCR和高效液相色谱技术对太湖南泉水域2009年5月至12月产毒微囊藻的环境丰度及其微囊藻毒素-LR产毒能力进行研究,并监测水质和富营养化程度.研究结果表明:南
越来越多的证据提示肿瘤细胞内紊乱的泛素化过程调控了肿瘤的发生发展。泛素结合酶E2C（ ubiquitin-conjugating enzymeE2C， UBE2C）是泛素结合酶家族的重要成员，是细胞有丝分裂中
Three new species of Chresmodidae are described. They belong to two different genera:Chresmoda multinervis sp. nov., Chresmoda shihi sp. nov. and Jurachresmoda
As the most important ecosystem in Beijing, the forest supports a lot of ecosystem services to local and around communities, which plays a key role in the maint
目的:观察尼古丁对大鼠牙槽骨内碱性磷酸酶(ALP)和牙本质基质蛋白1(DMP1)C末端表达的影响。方法:将20只5周龄健康雄性Wistar大鼠随机等分为实验组和对照组,每组再随机等分为3