搜索结果: 1-15 共查到“理学 pCO2”相关记录18条 . 查询时间(0.075 秒)
三峡库区不同城镇化梯度下河流pCO2动态及驱动因素
城镇化梯度 三峡库区 二氧化碳分压 环境因子
2020/9/24
为研究河流溶解性CO2（二氧化碳）对城镇化的响应，于2018年8月对三峡库区3条具有不同城镇化强度的河流——汝溪河、南河和桃花溪进行野外在线监测及取样分析，测定了样品有机质（溶解性有机碳DOC）、营养元素（溶解性总氮DTN、溶解性总磷DTP）；利用ArcGIS解译各流域的土地利用组成，并利用碳酸盐平衡方程，通过pH、Alk （碱度）、水温计算不同城镇化梯度河流的pCO2（CO2分压）.结果表明：建...
Seasonal dynamics of autotrophic and heterotrophic plankton metabolism and PCO2 in a subarctic Greenland fjord
Biological metabolic kinetics Greenland fjord
2014/10/16
We measured net planktonic community production (NCP), community respiration (CR), and gross primary
production (GPP) in September, February, and May in a subarctic Greenland fjord influenced by glac...
A laboratory experiment was designed to investigate the effects of ocean acidification (three levels) in the
presence or absence of the clay mineral illite (five concentrations) on the coagulation of...
Impact of seawater pCO2 on calcification and Mg/Ca and Sr/Ca ratios in benthic foraminifera calcite: results from culturing experiments with Ammonia tepida
seawater pCO2 calcification and Mg/Ca and Sr/Ca ratios benthic foraminifera calcite culturing experiments Ammonia tepida
2010/1/21
Evidence of increasing concentrations of dissolved carbon dioxide, especially in the surface ocean and its associated impacts on calcifying organisms, is accumulating. Among these organisms, benthic a...
Coupling of surface pCO2 and dissolved oxygen in the northern South China Sea:impacts of contrasting coastal processes
surface pCO2 dissolved oxygen South China Sea coastal processes
2010/1/21
We examined the relationship between CO2 partial pressure (pCO2) and dissolved oxygen (DO) based on a cruise conducted in July 2004 to the northern South China Sea (111°–118° E 18°–23° N), spanning fr...
Effects of increased pCO2 and temperature on trace element (Ag,Cd and Zn) bioaccumulation in the eggs of the common cuttlefish,Sepia officinalis
pCO2 temperature trace element bioaccumulation common cuttlefish
2010/1/21
Cephalopods play a key role in many marine trophic networks and constitute alternative fisheries resources, especially given the ongoing decline in finfish stocks. Along the European coast, the eggs o...
Effects of the pH/pCO2 control method on medium chemistry and phytoplankton growth
Effects pH/pCO2 control method medium chemistry phytoplankton growth
2010/1/20
The control of key chemical parameters in phytoplankton cultures, such as pCO2, pH and Ω (the saturation state of calcium carbonate), is made difficult by the interdependence of these parameters and b...
白令海盆pCO2分布特征及其对北极碳汇的影响
pCOCO2北极碳汇 水团运移 白令海 楚克奇海
2009/5/19
利用中国首次北极科学考察期间所观测到的白令海及楚克奇海表层海水CO2分压(pCO2)的变化及其异常, 研究了白令海盆pCO2的分布特征及与周围水文环流的相关关系. 结果表明, 与具有高生产力的白令海陆架区不同, 在白令海盆观测区内, 叶绿素整体水平较低, 生物作用不是pCO2空间分布的主要调控因子, 而水文环流要素呈现出重要影响, 是典型的高营养盐低叶绿素(HNLC)海区. 研究表明, 白令陆坡流...
Diurnal variations of surface seawater pCO2 in contrasting coastal environments
Diurnal variations surface seawater pCO2 contrasting coastal environments
2014/4/18
We examined diurnal variations of surface seawater pCO2 (partial pressure of CO2) in a suite of coastal marine environmental systems in the vicinity of the South China Sea (SCS) from inshore and nears...
Diurnal variations of surface seawater pCO2 in contrasting coastal environments
surface seawater pCO2 contrasting coastal environments
2014/4/18
We examined diurnal variations of surface seawater pCO2 (partial pressure of CO2) in a suite of coastal marine
environmental systems in the vicinity of the South China Sea (SCS) from inshore and near...
Interactions between changing pCO2, N2 fixation, and Fe limitation in the marine unicellular cyanobacterium Crocosphaera
Interactions between changing pCO2 N2 fixation, Fe limitation in the marine unicellular cyanobacterium Crocosphaera
2014/4/21
We examined the physiological responses of steady-state iron (Fe)-replete and Fe-limited cultures of the biogeochemically critical marine unicellular diazotrophic cyanobacterium Crocosphaera at glacia...
Coupling of heterotrophic bacteria to phytoplankton bloom development at different pCO2 levels:a mesocosm study
heterotrophic bacteria phytoplankton bloom development pCO2 levels
2010/1/18
The predicted rise in anthropogenic CO2 emissions will increase CO2 concentrations and decrease seawater pH in the upper ocean. Recent studies have revealed effects of pCO2 induced changes in seawater...
Availability of phosphate for phytoplankton and bacteria and of glucose for bacteria at different pCO2 levels in a mesocosm study
Availability of phosphate phytoplankton bacteria glucose mesocosm study
2010/1/15
Availability of phosphate for phytoplankton and bacteria and of glucose for bacteria at different pCO2 levels were studied in a mesocosm experiment (PeECE III). Using nutrient-depleted SW Norwegian fj...
Response of marine viral populations to a nutrient induced phytoplankton bloom at different pCO2 levels
marine viral populations nutrient induced phytoplankton bloom pCO2 levels
2010/1/15
During the PeECE III mesocosm experiment in 2005 we investigated how the virioplankton community responded to increased levels of nutrients (N and P) and CO2. We applied a combination of flow cytometr...
CO32W22; concentration and pCO2 thresholds for calcification and dissolution on the Molokai reef flat,Hawaii
CO32− concentration pCO2 thresholds calcification dissolution
2010/1/13
The severity of the impact of elevated atmospheric pCO2 to coral reef ecosystems depends, in part, on how seawater pCO2 affects the balance between calcification and dissolution of carbonate sediments...