-This paper deals with the recent ostracods and their distribution in littora! zones. The ostracods studied in this paper are all from the coastal zones of Gaode and Weizhou Island, Zhuang Autonomous Region of Guangxi...-This paper deals with the recent ostracods and their distribution in littora! zones. The ostracods studied in this paper are all from the coastal zones of Gaode and Weizhou Island, Zhuang Autonomous Region of Guangxi. The present study shows that the richness and diversity of the ostracods from Gaode area are rather lower as compared with those from Weizhou Island, where individual numbers increase constantly from supralittoral to sublittoral zones. The ostracod associations of Weizhou Island are similar to those reported from the east coast of the Weizhou Island, and most of them are littoral and benthic forms of the order Podocopida and only a few of them are members of the order Myodocopoda (e. g. Ruti-derma, Cylindroleberis and Polycope). In this paper, the distributive character of the ostracods in the studied areas is analysed and discussed synthetically on the ground of their ecology, which will provide new information for the study of ecologic habitats, biogeographic provinciality and the Cenozoic biostratigraphy of ostracods.展开更多
Weizhou Island is located on central sea area Beibu Guilf, Beihai, Guangxi province of China, it is called" Penglai fair Isle"( a fable abode of immortals), it is China's oungest volcanic island and also...Weizhou Island is located on central sea area Beibu Guilf, Beihai, Guangxi province of China, it is called" Penglai fair Isle"( a fable abode of immortals), it is China's oungest volcanic island and also the largest island of Guangxi. Even though Weizhou Island has abundant resources, the development of its tourism products is still on the primar stage. Thus, this article aims to discuss exploitation and development issues of the development of tourism development of Weizhou Island.展开更多
Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 19...Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 1992 and December 2010 by TOPEX and Jason satellites were compiled and analyzed. The results show that the perennial mean sea level near Weizhou Island is 211.7 cm(relative to the water gauge zero), and the relative mean sea level rising rate is 2.2 mm yr-1 from 1969 to 2010, which is consistent with the relative mean sea level rising rate recorded at other gauging stations in the western Pacific regions and with the global mean sea level rising rate. The absolute mean sea level rising rate at Weizhou Island is 3.0 mm yr-1 from 1993 to 2010, also conforming with the global mean sea level rising rate(3.1±0.4 mm yr-1) during the same time period. The highest annual tide level at Weizhou Island has a rising rate of 4.6 mm yr-1 and shows a 20-year quasi-periodic variation from 1966 to 2010. The primary cause of the mean sea level rising is global warming.展开更多
涠洲岛是我国最大的第四纪火山岛,位于南海珊瑚礁分布的北界,是我国珊瑚礁重要分布区之一。本研究采集涠洲岛各珊瑚礁区海滩岩中沉积的珊瑚碎屑等生物样品,挑选未经过成岩改造的原生珊瑚文石部分,进行放射性碳同位素(^(14)C)测年和海洋...涠洲岛是我国最大的第四纪火山岛,位于南海珊瑚礁分布的北界,是我国珊瑚礁重要分布区之一。本研究采集涠洲岛各珊瑚礁区海滩岩中沉积的珊瑚碎屑等生物样品,挑选未经过成岩改造的原生珊瑚文石部分,进行放射性碳同位素(^(14)C)测年和海洋储库效应校正后,建立涠洲岛全新世珊瑚礁发育的年代框架;通过对比我国各全新世珊瑚礁发育情况,推演出涠洲岛全新世珊瑚礁的形成过程。结果显示,涠洲岛珊瑚礁的起始发育时间与我国其他全新世珊瑚礁基本一致,均属于全新世大暖期。涠洲岛全新世珊瑚礁发育及演变过程可以分为4个阶段:在早全新世时期(12000-8000 a B.P.),涠洲岛全岛的火山碎屑岩台地形成,这为珊瑚附着生长提供了附着基质;在中全新世早期(8000-4000 a B.P.),涠洲岛北面沿岸的珊瑚岸礁及沙坝潟湖沉积体的雏形最先形成;在中全新世晚期(4000-2000 a B.P.),涠洲岛东面和西北方向的沿岸形成沙坝潟湖沉积体;在晚全新世时期(2000-900 a B.P.),涠洲岛东面至东北和西南方向沿岸的珊瑚礁开始广泛发育。可以推断,涠洲岛珊瑚礁形成于早全新世时期,从岛北岸开始发育,然后到岛的东面以及东北和西南方向,最终演变成涠洲岛现代珊瑚礁分布格局。展开更多
文摘-This paper deals with the recent ostracods and their distribution in littora! zones. The ostracods studied in this paper are all from the coastal zones of Gaode and Weizhou Island, Zhuang Autonomous Region of Guangxi. The present study shows that the richness and diversity of the ostracods from Gaode area are rather lower as compared with those from Weizhou Island, where individual numbers increase constantly from supralittoral to sublittoral zones. The ostracod associations of Weizhou Island are similar to those reported from the east coast of the Weizhou Island, and most of them are littoral and benthic forms of the order Podocopida and only a few of them are members of the order Myodocopoda (e. g. Ruti-derma, Cylindroleberis and Polycope). In this paper, the distributive character of the ostracods in the studied areas is analysed and discussed synthetically on the ground of their ecology, which will provide new information for the study of ecologic habitats, biogeographic provinciality and the Cenozoic biostratigraphy of ostracods.
文摘Weizhou Island is located on central sea area Beibu Guilf, Beihai, Guangxi province of China, it is called" Penglai fair Isle"( a fable abode of immortals), it is China's oungest volcanic island and also the largest island of Guangxi. Even though Weizhou Island has abundant resources, the development of its tourism products is still on the primar stage. Thus, this article aims to discuss exploitation and development issues of the development of tourism development of Weizhou Island.
基金supported by the Youth Ocean Science Foundation of SOA, China (2010208)the National Natural Science Foundation of China (41030856)
文摘Tidal data from Weizhou, Zhapo, and Shanwei stations between 1969 and 2010 and from five gauging stations in the western Pacific Ocean provided by PSMSL, and the global mean sea level data recorded between December 1992 and December 2010 by TOPEX and Jason satellites were compiled and analyzed. The results show that the perennial mean sea level near Weizhou Island is 211.7 cm(relative to the water gauge zero), and the relative mean sea level rising rate is 2.2 mm yr-1 from 1969 to 2010, which is consistent with the relative mean sea level rising rate recorded at other gauging stations in the western Pacific regions and with the global mean sea level rising rate. The absolute mean sea level rising rate at Weizhou Island is 3.0 mm yr-1 from 1993 to 2010, also conforming with the global mean sea level rising rate(3.1±0.4 mm yr-1) during the same time period. The highest annual tide level at Weizhou Island has a rising rate of 4.6 mm yr-1 and shows a 20-year quasi-periodic variation from 1966 to 2010. The primary cause of the mean sea level rising is global warming.
文摘涠洲岛是我国最大的第四纪火山岛,位于南海珊瑚礁分布的北界,是我国珊瑚礁重要分布区之一。本研究采集涠洲岛各珊瑚礁区海滩岩中沉积的珊瑚碎屑等生物样品,挑选未经过成岩改造的原生珊瑚文石部分,进行放射性碳同位素(^(14)C)测年和海洋储库效应校正后,建立涠洲岛全新世珊瑚礁发育的年代框架;通过对比我国各全新世珊瑚礁发育情况,推演出涠洲岛全新世珊瑚礁的形成过程。结果显示,涠洲岛珊瑚礁的起始发育时间与我国其他全新世珊瑚礁基本一致,均属于全新世大暖期。涠洲岛全新世珊瑚礁发育及演变过程可以分为4个阶段:在早全新世时期(12000-8000 a B.P.),涠洲岛全岛的火山碎屑岩台地形成,这为珊瑚附着生长提供了附着基质;在中全新世早期(8000-4000 a B.P.),涠洲岛北面沿岸的珊瑚岸礁及沙坝潟湖沉积体的雏形最先形成;在中全新世晚期(4000-2000 a B.P.),涠洲岛东面和西北方向的沿岸形成沙坝潟湖沉积体;在晚全新世时期(2000-900 a B.P.),涠洲岛东面至东北和西南方向沿岸的珊瑚礁开始广泛发育。可以推断,涠洲岛珊瑚礁形成于早全新世时期,从岛北岸开始发育,然后到岛的东面以及东北和西南方向,最终演变成涠洲岛现代珊瑚礁分布格局。
