中国二叠系[竹蜓]的属带与国际二叠系的阶

中国已建立的二叠系各阶的[竹蜓]的属带．对中国二叠系生物地层的研究曾起到重要的作用。由于二叠系的[竹蜓]的属带时限都很长,定义不明确和地方性较强,中国二叠系的阶不宜再用[竹蜓]的属带来确定。国际二叠系的主导化石门类是牙形刺,二叠系的3统9阶都是用牙形刺来确定的,而不是用[竹蜓],更不是用[竹蜓]的属带。进一步研究[竹蜓]类各属内的种一级的谱系演化关系,参照牙形刺带确认[竹蜓]的属种的时限,进行不同相区的对比,是今后二叠纪生物地层研究的重要任务。     

文化茶坊

英语沙龙;不信你不笑;星座性格;中华竹文化;地域风情;眼部去皱实用招数。[编者按]     

木孜塔格幅、鲸鱼湖幅地质调查新成果及主要进展

发现并填绘出前寒武纪地层单元.于木孜塔格地区下石炭统托库孜达坂群中发现早石炭世放射虫.在阿尔格山大断裂以南中二叠统鲸鱼湖组灰岩中首次发现冷温型单通道(竹蜓).在黑顶山缝合带中识别出畅流沟-向阳泉和木孜塔格蛇绿混杂岩带,二者分别形成于新元古代早、晚期.对各构造带中的岩石地层进行了古地磁研究与对比,建立了各自的古地磁极移曲线.获取一批新生代火山岩的同位素测年资料.     

川西山区大熊猫主食竹野外光谱特性

本文以遥感技术的基础手段——野外光谱测试方法,在我国首次研究了川西山区若干大熊猫主食竹在不同生长发育期和不同季节的野外光谱反射率,从而得出主食竹在不同生长发育状态下的光谱特性及光谱变化规律。主食竹开花前后的光谱变化,可作为预测开花的一条途径。     

ON THE STRATIGRAPHY OF THE FENGNINIAN SYSTEM

The corals described by Mr. Yü in the preceding paper came mainly from southern Kueichou, in the districts of Tushan (獨山) and Tat'ang (大塘). The first fossiliferous section met with in the field (Pl. Ⅰ, Section ra) is that between the village of Kolaoho ((?)狫河). Ⅱ kilometers south of the city     

沟竹蛏的繁殖季节与生长

根据性腺形态特征、组织切片观察和肥满度指数变化 ,报道沟竹蛏繁殖期为每年的6～8月份 ,分批放散精、卵 ,其两次生殖高峰分别出现于6月上、中旬和8月上、中旬。繁殖季节、肥满度指数与温度密切相关 ,其繁殖期适宜温度为25～29℃。沟竹蛏的壳长与壳高的关系呈直线正相关 ,L=4.304H -2.084 ,(r=0.9138) ;壳长与干肉重呈幂函数关系 ,W1(非繁殖季节 )=4.750×10-7×L3.53,(r=0.9196) ,W2(繁殖季节 )=3.942×10-7×L3.301,(r=0.9105)。     

彝风异俗·择山而居·连载八 舞动金竹

跳弓节,又称跳宫节和祭金竹,彝语称“召契”、“孔告”．是广西那坡白彝最隆重、最欢乐的传统节日。     

Standardization of CPUE for Chilean Jack Mackerel （Trachurus murphyl） from Chinese Trawl Fleets in the High Seas of the Southeast Pacific Ocean

The generalized linear model （GLM） and generalized additive model （GAM） were applied to the standardization of catch per unit effort （CPUE） for Chilean jack mackerel from Chinese factory trawl fishing fleets in the Southeast Pacific Ocean from 2001 to 2010 by removing the operational, environmental, spatial and temporal impacts. A total of 9 factors were selected to build the GLM and GAM, i.e., Year, Month, Vessel, La Nifia and E1 Nifio events （ELE）, Latitude, Longitude, Sea surface temperature （SST）, SST anomaly （SSTA）, Nino3.4 index and an interaction term between Longitude and Latitude. The first 5 factors were significant components in the GLM, which in combination explained 27.34% of the total variance in nominal CPUE. In the stepwise GAM, all factors explained 30.78% of the total variance, with Month, Year and Vessel as the main factors influencing CPUE. The higher CPUE occurred during the period April to July at a SST range of 12-15℃ and a SSTA range of 0.2-1.0℃. The CPUE was significantly higher in normal years compared with that in La Nifia and E1 Nifio years. The abundance of Chilean jack mackerel declined during 2001 and 2010, with an increase in 2007. This work provided the relative abundance index of Chilean jack mackerel for stock as- sessment by standardizing catch and effort data of Chinese trawl fisheries and examined the influence of temporal, spatial, environ- mental and fisheries operational factors on Chilean jack mackerel CPUE.     

闽西老虎洞组下部(竹蜓)类生物地层的再研究

基于闽西上杭和宁化两地石炭系老虎洞组下部带的系统研究 ,通过类生物地层划分和对比及岩相古地理的分析 ,认为上杭—宁化一线类生物地层存在着横向变化 ,上杭Profusulinella带与宁化 Pseudoendothyra ninghuaensis带应为同期异相的化石带。与之相关的老虎洞组底部的白云岩层年代地层应分别归属于滑石板阶上部及达拉阶下部。