刘鸿允教授的《中国古地理图》和他对古地理学的贡献

刘鸿允教授的代表作《中国古地理图》自1955年正式出版至今已43年。虽然在其后,随着我国地质工作向纵深的发展,在系统性、科学性、准确性等方面都有很大改进的古地理图     

海洋工程施工围堰用海方式界定问题分析与探讨

文章从工程与工作实践出发,对填海造地工程、跨海桥梁、水利工程等海洋工程施工围堰用海方式界定问题进行了分析与探讨。针对施工围堰与项目申请用海方式不一致的情况,提出了分阶段确权的解决方法。期望为海域管理和海域使用动态监视监测工作提供有益参考。     

远海梭子蟹幼体发育的研究

本文对人工培养的远海梭子蟹各期幼体进行观察，结果发现，远海梭子蟹整个幼体发育过程共蜕皮6次，即Sou状幼体阶段脱皮5次；大眼幼体阶段蜕皮1次。在27．4－28．2℃的培养条件下，远海梭子蟹从破膜孵出到变态为第一期幼蟹，需经14－15d。     

Comparative studies on the larval development of the penaeid shrimps,Penaeus Chinensis,P. merguiensis andP. penicillatus

The morphology of larval and 1st postlarval stages ofPenaeus penicillatus are described. Results from comparative studies on larval development ofP. penicillatus, P. merguiensis andP. chinensis are as follows: These three species could not be identified during their naupliar stages. In the 1st protozoea, the antennule L1/L2 value is 1.7–2.0 inP. merguiensis, but less than 1.7 inP. chinensis andP. penicillatus; in the 2nd protozoea, the supra-orbital spine inP. chinensis is not bifurcated, while those ofP. merguiensis andP. penicillatus are bifurcated; in the 3rd protozoea, there is a minute (or no) dorso-median spine on the posterior margin of the 1st and 2nd abdominal somite inP. chinensis, but they are prominent inP. merguiensis andP. penicillatus. In the mysis and 1st postlarval stages,P. chinensis differs fromP. merguiensis andP. penicillatus in having 9 (8 in the other 2 species) long setae on the exopod of pereopods 1–3; additionally, one dorsal tooth appears on the rostrum ofP. chinensis in the 2nd mysis and that of the other 2 species in the 3rd mysis;P. chinensis has 2 (mostly) or 1 dorsal tooth on the rostrum in the 3rd mysis and 2–3 in the 1st postlarva, whileP. penicillatus andP. merguiensis have only 1 in the 3rd mysis and 1st postlarva. Comparative studies on larval development showedP. penicillatus has closer affinity withP. merguiensis than withP. chinensis. Contribution No. 2218 from the Institute of Oceanology, Chinese Academy of Sciences     

区域特色工业及其作用——以浙江省为例

文章通过对浙江省区域特色工业的发展现状进行分析，认为区域特色工业的时空演进可以分为五个发展阶段，即：自组织阶段、横向联系阶段、自动集聚阶段、向园区集聚阶段和空间跳跃扩张阶段。并从空间角度分析了区域特色工业各个发展阶段的特征和企业组织形式，最后探讨了区域特色工业的时空演进对城市化进程的推动作用。     

产业群的动态研究以及实证分析

产业群战略已经成为各国工业政策的一项重要内容，但由于产业的多样性和集群发展的动态性。实施中难有一套完整的定式，实际操作中难度较大，为此，本文首先对产业群基本动力机制进行总结，按照集群竞争优势的强度以及主导动力，确定集群动态研究的方法，将集群分为：发生期，发展期，成熟期，接着用定性的方法归纳出各阶段的一般特征。然后，本文选取了国内外三个案例对产业群动态特点进行实证分析。最后，阐明文章研究的意义以及有待进一步探讨的问题。     

Mucilaginous seed coat structure ofCarrichtera annuaandAnastatica hierochunticafrom the Negev Desert highlands of Israel, and its adhesion to the soil crust

Carrichtera annuaandAnastatica hierochunticaare two desert annuals, the seeds of which are dispersed by rain. The seed coat surface and cross-section structure of the dry seeds of these plants were examined by SEM. The seeds were wetted by placing them on natural saturated desert soil crust in Petri dishes. The Petri dishes were placed in a freeze-dryer when the upper part of the seed surface was still dry. This enabled study by SEM of the developmental stages of the mucilage, from the first stage until the full formation of the mucilage. We argue that the ecological significance of the mucilage differs in winter and summer. In winter the main effect is in water retention and soil particle contact, while in summer dew may allow damage repair and priming for the germination process.