安徽虻类初探

我们于1987年和1988年对安徽虻的种类进行了初步调查,经鉴定得出安徽虻类33种,其中原虻属16种,黄虻属5种斑虻属6种,麻虻属6种。     

梅州百岁山主要植物群落分析

百岁山位于梅州市梅江区东郊,属亚热带季风气候区,是梅州城市森林的重要组成部分。野外调查时选取不同植物群落类型代表地段,进行样地研究。调查结果表明:(1)百岁山植被以人工林为主,有部分的次生灌木林和草丛;(2)百岁山植被主要有5个植物群落类型:马尾松-漆树-芒萁群落,木荷-漆树+鸭脚木-芒萁群落,木荷+马尾松-漆树-芒萁群落,五节芒-芒萁群落和盐肤木-芒萁群落。文章分析了各植物群落的特点,预测乡土树种优势将逐渐取代现有的人工种植树种,探讨了百岁山林区存在的问题,并提出了相应的解决办法。     

台州地区植物分布新记录(四)

报道在浙江省台州地区植物分布新记录的种、变种、亚种共计16个。     

横断山蕨类植物新种

 Thirteen new species of pteridophytes are described from the Hengduan Mountains, China. They are Selaginella laxistrobila Shing, S. trichophylla Shing, Hypodematium    daochengense    Shing,    Stegnogramma    latipinna    Ching, Pseudocyclosorus pseudorepens  Ching et Y.  X.  Lin,  P.  subfalcilobus  Ching, Pyrrosia pseudodrakeana Shing, Lepisorus neolewisii Shing, L. bilouensis Ching et Y. X. Lin, Polypodium muliense Ching, P. nervopilosum  Shing, P. intermediumChing et S. K. Wu and P. daochengense  Ching et S. K. Wu.     

Collaborative processes in species identification using an internet-based taxonomic resource

Visual databases are increasingly important resources through which individuals and groups can undertake species identification. This paper reports research on the collaborative processes undertaken by pre-service teacher students when working in small groups to identify birds using an Internet-based taxonomic resource. The student groups are conceptualised as ‘knowledge-building communities’ working in a ‘joint problem space’ comprising the collective knowledge of the participants interacting with the taxonomic database. Collaborative group work and associated dialogue were recorded with digital video. The recordings were analysed for the categories of dialogue and the categories of knowledge used by the students as they interacted with the taxonomic database and how they drew on their previous experiences of identifying birds. The outcomes are discussed in the context of the interplay of individual and social processes and the interplay between abstraction and lived experience in the joint problem space.     

四川生态茶园的适宜型及物种配置

四川生态茶园的建设与我国其它地区有其相似性和特殊性。本文从四川茶区的生态气候和植被区系特点出发，从理论和实践角度探讨了建设四川生态茶园的可行性和不同适宜类型。以及适合茶园间作的林、果、药、绿肥等植物的种类和布置方法。     

生物多样性保护与利用的主要研究方向

生物多样性是有机界一个无所不包的术语，系指一个生态系统、一个区域乃至整个地球物种（包括动物、植物和微生物）丰富的均匀的程度。它既包含生物之间以及生物与环境之间复杂的相互关系的含义，也反映一个区域的发展规划是否符合客观规律的重要樗。可从遗传多样性、物种多样性和生态系统多样性三个不同水平来研究和分析其基本特点，当然，不同水平研究的关系是非常密切的。本文主要介绍其当前的基本情况、研究的战略思想、目标和主要研究内容，以期引起有关方面的重视，组织力量开展研究。     

The Ecological Message of the Outdoor Magazines

Abstract

The purpose of this study was to examine (a) college students' attitudes and complexity of thinking about the Endangered Species Act (ESA) and (b) the effects of environment-based coursework on students' attitudes and thinking. Using self-report questionnaires in a pretest-posttest design, the authors examined attitudes in terms of their direction, extremity, ambivalence, and importance. Complexity of thinking was measured as integrative complexity. Results suggested that college students (N = 205) who had moderate and ambivalent attitudes toward the ESA wrote significantly more integratively complex essays about the issue than did students who had unambivalent attitudes. Students' integratively complex thinking was not related to the direction of their attitudes toward the ESA or its personal importance to them. Students who were enrolled in an environment-based, university-wide writing course showed a significantly greater increase in integratively complex thinking about the ESA than did students enrolled in a nonenvironment-based, university-wide writing course.     

三明格氏栲自然保护区常绿阔叶林物种多样性分析

通过对福建三明格氏栲自然保护区常绿阔叶林9个群丛的物种多样性进行测算,结果表明:保护区内常绿阔叶林物种多样性指数为4.513—2.947;物种均匀度为0.498—0.772;生态优势度为0.049—0.066。并提出了相应的保护建议。     

大方福建柏保护区药用蕨类植物种类及生态

大方福建柏保护区有药用蕨类植物29科47属80种,占贵州药用蕨类植物科数的63.04%,属数的38.84%,种数的21.86%。根据该地区药用蕨类植物的生境和分布,将其生态类型分为土生、石生、附生和水生4个类型。