东海区龙头鱼数量分布与渔业生物学现状分析

以2008-2009年东海区渔业资源大面积定点底拖网调查资料和常规渔业资源监测资料为依据,对龙头鱼的渔业生物学特征进行了分析研究。结果表明:龙头鱼主要分布在江苏外海和长江口外海,较为稳定的盐度水域范围,对水温和水深的适应范围较广;龙头鱼的优势叉长为120～200 mm,占70.55%,平均叉长165.23 mm;优势体重为10～20 g,占28.21%,平均体重34.10 g。龙头鱼的雌雄比例约为1.70:1,7-9月为产卵盛期;除了7月份以外,龙头鱼摄食等级为0级(空胃)所占比例最高;食性分析结果表明,胃含物中出现频率最高的是龙头鱼,其次为七星底灯鱼,再次为中国毛虾。目前,龙头鱼尚属于资源状况较好的鱼种之一,渔获量较为稳定,资源开发尚有一定潜力。     

长江经济带湖泊水下地形的热红外遥感反演——以武汉市东湖为例

针对长江经济带平原湖区的浅水湖泊,提出了一种基于热红外遥感的湖泊水深测量方法.首先根据湖泊水温的垂直分布规律,推导出浅水湖泊中表层水温与水深平方的倒数存在近似的正比关系.然后以武汉东湖为例,利用Landsat-8热红外(TIRS)遥感影像数据反演东湖水表温度.结合实测水深测量样本点对,利用半经验回归方法,确定水深与水温的关系式,根据此关系式由水温反演出整个湖泊的水深,最后再结合影像当日的水位数据得到水下地形.试验模型拟合的相关系数R2为0.657,在浅水湖泊水深反演中能取得平均相对误差8.93%的相对测深精度.试验表明, 利用热红外遥感可为长江经济带平原湖区浅水湖泊的水深测量和水下地形测量提供一个快捷的新方法.     

Preliminary results of a regional air-sea coupled model over East Asia

We have established a regional air-sea coupled model over East Asia and conducted a 20-year integration to evaluate its performance in reproducing the present climate. The coupled model consists of RegCM3 and HYCOM controlled by the OASIS3 coupler with resuolution of 60 km for the atmosphere and 33 km for the ocean, respectively. Unlike some other regional air-sea coupled models, a one-way nesting method is employed in the oceanic component and a heat flux adjustment for solar radiation is used to remove an about 2°C cold bias in SST. The primary analysis for this 20-year integration shows that the coupled model successfully reproduces the main features of the circulations over East Asia, both in the atmosphere and the ocean, including climatology, seasonal and interannual variations. Improvements are seen in the coupled model compared to the uncoupled one, especially in the simulation of precipitation, the most important element of the East Asian monsoon, although there are still obvious discrepancies that come mainly from the model components themselves. Further analyses show that the rainfall simulation benefits from the enhancements of the Northwest Pacific Subtropical High in summer, which leads to the improvement of the moisture flux simulation at the middle-lower atmospheric circulation. The results indicate that the regional air-sea coupled model is more suitable for the East Asia monsoon simulation.     

青银高速济南黄河三桥主塔施工

以青银高速济南黄河三桥主塔施工为例,在介绍其施工的主要工序基础上,阐述了透水模板、门式钢架等新工艺、新方法的应用。     

简介“中东呼吸综合征”

日前,中国发现首例输入性中东呼吸综合征(MERS)确诊病例。患者系来自韩国的成年男性,其病情进展引起了社会广泛关注。同时,韩国境内也已发现疑似第二代人传人病例。中东呼吸综合征的又一轮爆发引起了全世界卫生系统的关注,“中东呼吸综合征”这个陌生的名词走进人们的视野。文章针对“中东呼吸综合征”的病原学等特点,以及它与严重急性呼吸综合征(SARS)的区别进行了介绍。     

试析东亚一体化进程中的东亚认同

一、阐述认同的内涵及东亚认同的基础;二、分析东亚认同的形成及存在的障碍;三、指出东亚认同的形成对一体化进程具有三方面的积极作用:消除东亚地区存在的安全困境,指导东亚各国寻求共同利益,提高东亚国家在国际事务中的地位和影响力。     

济南市空气污染与大气环流形势相关性探讨

空气污染加重对城市居民生活和健康的危害为人们所关注,通过对济南市若干严重污染日大气环流形势的调查分析,得出在污染原强不变的条件下,济南市区严空气污染与某些特殊大气环流形势的相关性。     

Anomalous activity of East Asian winter monsoon and the tropical Pacific SSTA

The relationship between the anomalous East Asian winter monsoon (EAWM) activity and the tropical Pacific SST anomalies has been identified using the results of 40-year integration of the IAP CGCM1 model and 10-year observational data. In the strong EAWM year, the western and central Pacific are dominated by positive SST anomalies while the eastern Pacific is negative ones. In the weak EAWM year, the SSTA pattern is quite different and shows El Nino-like SST anomalies. The strong EAWM activity tends to create extra easterly flow to the east and extra westerly flow to the west of the warm SSTA region over the equatorial western and central Pacific, thus leading to the enhancement of convergence and convection of the flow in this region and favorable to the maintenance and development of such an SSTA pattern. On the other hand, the warm SST anomaly over the western and central Pacific, as a forcing, may lead to a specific pattern of the northern extratropical atmosphere, which is favorable to the strong EAWM activity. The tropical Pacific SSTA pattern related closely to the strong EAWM activity differs significantly from that of the La Nina year.     

龙固井田主采煤层顶板特征及工程地质分区

运用沉积学、地层学等与工程地质学相结合的方法,对巨野煤田龙固井田主采煤层顶板结构进行了精细研究,把龙固井田主采煤层顶板划分为下软上硬型、下硬上软型和复合型;详细研究了煤层顶板岩性分区特点,总结出五种顶板岩性组合类型:煤层—厚层状砂岩(老顶)、粉砂岩—厚层状砂岩(老顶)组合、泥岩—粉砂岩—厚层状砂岩(老顶)组合、粉砂岩—泥岩—厚层状砂岩(老顶)组合、泥岩—厚层状砂岩(老顶)组合等。结合顶板工程地质特征及评价,认为上述五种岩性组合顶板的稳定性依次变差。     

济南大峰山野生经济植物的调查研究

报道了济南大峰山野生经济植物173种,隶属于59科。其中野生药用植物160种,隶属于57科;野生花卉90种,隶属于35科;野生蔬菜91种,隶属于34科。对该地区经济植物的合理开发和利用提出了可行性建议。文章最后附有大峰山野生经济植物名录。