榄李属红树植物叶片结构及其生态适应     

李元跃  潘文  黎中宝  林鹏 《海洋科学》2010,34(7):72-76

研究了采自海南东寨港(19°54′N,110°20′E)榄李属的红榄李(Lumintzera littorea)和榄李(Lumintzera racemosa)的叶片结构及其生态学意义。榄李属红树植物的叶片解剖结构特征基本相同,都具有适应海滩环境的结构——叶片为完全等面叶,没有内皮层结构,海绵组织特化为贮水组织等;叶的解剖结构差异可能是榄李属红树植物生态隔离现象的原因,其结构差异可为种间鉴定提供依据。  相似文献   

红树植物红海榄叶化学组成研究   总被引：4，自引：0，他引：4  

宋文东  范润珍  奚旦立 《海洋湖沼通报》2008,(4)

对红树植物红海榄叶的基本化学成分水分,灰分,灰分中酸不溶物,灰分中S(SO42-),粗蛋白,粗脂肪等及氨基酸和微量元素的组成和含量进行了系统的分析测定。其基本化学组成各成分含量分别为:水分(69.18%),灰分(3.04%),灰分中酸不溶物(0.094%),灰分中S(SO42-)(0.052%),粗脂肪(7.75%),粗蛋白(7.14%);测得了红海榄叶中17种氨基酸,其总含量为10.7mg/g,其中人体必须氨基酸有7种,占所含氨基酸总量约26%;采用全谱直读等离子体原子发射光谱仪对红海榄叶进行了31种微量元素的分析测定,测得了其中18种元素的含量,红海榄叶中含有丰富的人体必须的矿物质元素。  相似文献   

地中海的后门——穿越苏伊士运河     

逍遥一派 《海洋世界》2014,(10):28-29

<正>北起地中海边的塞得港,南止红海旁的陶菲克港,全长190多千米,这条曾被马克思评价为"东方最伟大的航道"为世界所熟知,那就是"苏伊士运河"。苏伊士运河位于埃及东北部,并不宽阔的运河从它诞生之初,就注定成为紧紧扼守欧、亚、非三大洲的交通要冲。为了把红海和地中海贯通连接起来,公元前1874年,埃及法老苏努塞尔特三世就曾希望利用尼罗河的直  相似文献   

辽河口地区红海滩的形成、演化及开发保护对策     

李志文  邵会文  陈越  金国鑫  宋林琳  金鑫 《辽宁地质》2011,(8):52-53

在辽河口地区平均海潮线以上的近海滩涂,尤其是滨海潮沟或受海潮影响的低洼地带,土壤湿度大,盐碱度高,生长着一种罕见的红色翅碱蓬,属生态地质景观,远处望去,颇似红地毯,景色蔚为壮观,这就是闻名遐迩的红海滩。其面积、景色在全国,乃至全世界也不多见,构成了盘锦市旅游资源的核心。  相似文献   

Remote sensing of phytoplankton distribution in the Red Sea and Gulf of Aden     

ALKAWRI Abdulsalam  GAMOYO Majambo 《海洋学报(英文版)》2014,33(9):93-99

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A Rapid Assessment of Scleractinian and Non-Scleractinian Coral Growth Forms Along the Saudi Arabian Coast,Red Sea     

《青岛海洋大学学报(英文版)》2014,(2):243-248

In this study we assessed the current status of coral reefs along the Saudi Arabian coast of the Red Sea. Among the three growth forms of Acroporid corals, the branching forms were found to dominate in the Farassan Islands （44.55%±11.10% cover） fol-lowed by tabular forms in the Doga Islands （ranging between 18%±6.47% and 18.30%±9.47% cover）. Digitate forms were rarely found along the coast except at Maqna. Among the five growth forms of non-Acroporid corals, we observed maximum cover of branching forms in the Yanbu offshore area （58.89%±15.11% cover） followed by the Jeddah coast （24.76%±14.04% cover）. The Millepora spp., a non-Scleractinian coral, was abundant at all the near-shore sites, such as Jeddah （10.70%±8.21%） and A1-Wajh （9.81%±6.69%）. The live coral cover （including both Scleractinian and non-Scleractinian corals） of Saudi Red Sea coast was seen to be higher in the north and gradually decrease towards the south. Principal Component analysis showed that the contribution of Acro- porid corals was greater in the southern region than in the northem and middle regions, but vice-versa in the case of non-Acroporid corals. Bray-Curtis cluster analysis categorized all the study sites into two major clusters with 60% similarity. Among them, one cluster-forming sites from Maqna to Masturah （Northem region） and the second one comprised the middle and southem regions （Jeddah to Farassan Islands）, and one outlier Rabigh.  相似文献   

穿过传说的窗口     

包晓泉 《南方国土资源》2014,(11)

正可以说,京族人之间的专属通用语言纯属原生,在京族先祖到达三岛以前,京语就已经是一种成熟的族群语言了,只不过,那时的京语还不叫京语。京语的发音,绝大多数和越语一致,虽隔海相望,京族人和越南人之间的交流沟通却全无障碍。另一方面,由于京族跟壮、汉各族杂居得实  相似文献   

辽河口地区红海滩的形成、演化及开发保护对策     

李志文  邵会文  陈越  金国鑫  宋林琳  金鑫 《国土资源》2011,(8):52-53

在辽河口地区平均海潮线以上的近海滩涂,尤其是滨海潮沟或受海潮影响的低洼地带,土壤湿度大,盐碱度高,生长着一种罕见的红色翅碱蓬,属生态地质景观,远处望去,颇似红地毯,景色蔚为壮观,这就是闻名遐迩的红海滩。其面积、景色在全国,乃至全世界也不多见,构成了盘锦市旅游资源的核心。  相似文献   

北天山巴音沟蛇绿岩形成时代的精确厘定及意义   总被引：15，自引：1，他引：14  

徐学义  马中平  夏林圻  李向民  夏祖春  王立社 《地球科学与环境学报》2005,27(2):17-20

应用SHRIMP方法对北天山巴音沟蛇绿岩中侵入辉长岩内的斜长花岗岩进行了锆石UPb年龄测定,表明斜长花岗岩形成于(324.8±7.1)Ma(2σ)。这一年龄精确反映了巴音沟蛇绿岩的形成时代于早石炭世晚期。巴音沟蛇绿岩形成于强烈大陆伸展作用导致的大陆裂谷向大洋裂谷转变的一种动力学环境,记录了由于裂谷作用强烈拉伸形成的初始洋壳,是晚古生代天山地区“红海型”洋盆的地质记录。  相似文献   

Effects of the Thermal Contrast Between Indo-China Peninsula and South China Sea on the SCS Monsoon Onset          下载免费PDF全文

LIU Xuanfei  LI Qing  HE Jinhai  WANG Ping 《Acta Meteorologica Sinica》2010,24(4):459-467

The seasonal and interannual variations of the thermal contrast between Indo-China Peninsula (ICP)and South China Sea (SCS) were analyzed using the pentad mean NCEP/NCAR reanalysis data during 1958-1998 and the pentad mean outgoing long-wave radiation (OLR) data during 1975{1998, along with the effects of such a thermal contrast on the SCS monsoon onset (SCSMO). It is shown that there exists significant seasonal evolution for such a thermal contrast. The surface temperature of ICP is higher than that of SCS from pentad 3 to pentad 25 due to the sensible heating of the ICP. After pentad 25, such a thermal gradient reverses due to the temperature decrease resulted from the convection and rainfall over the ICP from pentad 22 to pentad 23. Furthermore, the above seasonal evolution of the discussed thermal contrast also demonstrates a remarkable interannual change which plays an important role in the SCSMO.On one hand, the reversion happens prior to (or simultaneously with) the SCSMO each year during 1958-1998, thus becoming a precondition for the SCSMO. On the other hand, the earlier (later) the date when the surface temperature of ICP becomes higher (lower) than that of the SCS, the later the SCSMO.  相似文献