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1.
中国昆虫生态学五十年(1949~1999)   总被引:13,自引:0,他引:13  
丁岩钦  戈峰 《昆虫知识》2000,37(1):18-23
150年来昆虫生态学在我国的发展概况昆虫生态学这门学科50年来在我国有了很大的发展,它不仅由一门经典的描述性生物分文学科,发展而成为动态的定量分析的学科,由一门纯生物学科发展而成多门交叉学科,并且正在通过宏观学科与微观学科相结合,而发展成为一门完整的综合生态学科。50年前(即1949年以前)昆虫生态学在我国的基础极其薄弱,仅有一些田间调查描述性的记载。50年代的研究内容主要是重要害虫的田间发生规律及生态习性,亦相应开展一些生理生态的实验工作。60年代的中心工作是种群生态学的数量动态与空间动态的研究以及种群大发…  相似文献   

2.
协同生态学   总被引:1,自引:0,他引:1  
1.协同生态学定义协同生态学是以系统科学,尤其是协同学为基础研究协同生物体和基本生态组元的形成、发展和改建的科学。它包括两部分的内容:基础协同生态学和协同生态工程学。基础协同生态学主要研究:(1)生态  相似文献   

3.
分子生态学发展的前提和条件   总被引:2,自引:0,他引:2  
分子生态学发展的前提和条件湖北医科大学病毒研究所暨分子生态学研究室武昌430071林雨霖向近敏刘学锋周峰美国密西西比大学医学院微生物学免疫学系暨VA医学中心杰克逊,39216向连滨在以《分子生态学》[1]首发式为基础的首届全国分子生态学学术研讨会(1...  相似文献   

4.
现代生态学的几个热点   总被引:6,自引:0,他引:6  
生态学在近卅年(60—80年代)以来取得了如此迅速的进展,使它从一个传统的、经验性的和描述定性的学科发展为一个用现代理论与高技术武装起来的,多学科渗透与交叉的现代化庞大学科。在更广阔的角度上,生态学正在从一个单纯描述生物与环境关系的自然科学渗透到社会和人文科学——经济、历史、哲学、政治与伦理道德等各个方面。“生态意识”逐渐成为全民道德观与世界观的要素。  相似文献   

5.
旅游生态学—生态学应用的一个新领域   总被引:22,自引:2,他引:20  
旅游生态学──生态学应用的一个新领域刘鸿雁(北京大学城市与环境学系,100871)RecreationEcology─—ANewAreaofAppliedEcology.¥LiuHongyan(DepartmentofUrbanandEnvironm...  相似文献   

6.
生态学的精神价值   总被引:1,自引:0,他引:1  
生态学的精神价值陈清硕(江苏农学院扬州225001)SpiritualValueofEcology¥.ChenQingshuo(JiangsuAgriculturalCollege,Yangzhou225001):ChineseJournalofEcology,1993,12(3):68-72.Thispaperdescribesthefunctionsofecologyintheprogressofsocialideologyandcivilization.Ecologyhelpsbringintobeingtheconstructionofascientificworldoutlookandincreasetheecologicalconscious-nessofmankind.Italsosuppliesatotaldevelopmentalpointofviewforthesocietyandprovidesagreataestheticvalue.Thespiritualvalueofecologyshouldneverbeneglected.Keywords:socialecology,ecol  相似文献   

7.
全球生态学—生态学的新发展   总被引:3,自引:0,他引:3  
生态学是迅速发展的学科体系。它的研究领域不断扩大,新的分支时在涌现。全球生态学(global eeolog)就是最近出现的为全世界生态学家关心的一个重要新领域。  相似文献   

8.
生态学研究的新领域--分子生态学   总被引:4,自引:0,他引:4  
分子生态是生态学的一个新的研究领域。它采用分子生物学的技术与方法来研究生态活动规律的分子机理。本文简要介绍了分子生态学的定义、研究内容、研究方法和研究热点等,以期描述出分子生态学的概貌。  相似文献   

9.
景观与区域生态学的一般原理   总被引:21,自引:0,他引:21  
  相似文献   

10.
英国全球生态学研究简介彭少麟(中国科学院华南植物研究所,广州510650)全球生态学(globalecology)是继细胞、个体、种群、群落、生态系统水平,以更为宏观的尺度来研究人类与其环境相互关系的生态学分支学科。由于人类过度活动的影响—化石燃料的...  相似文献   

11.
评世界保护联盟新的物种受威胁分类系统草案   总被引:2,自引:0,他引:2  
为了进一步了解物种受威胁的情况和发展,以加强物种保护工作,世界保护联盟制定了一个新的物种受威胁分类系统草案,把物种受威胁的程度分为9个级别,即绝灭种、野生状态下的绝灭种、极危种、濒危种、渐危种、敏感种、安全的/危险性小的种、不充分了解的种和未估价的种。本文对这个分类系统草案作了简略的评介。  相似文献   

12.
Surrogate species approaches, including flagship, focal, keystone, indicator, and umbrella, are considered an effective means of conservation planning. For conservation biologists to apply surrogates with confidence, they must have some idea of the effectiveness of surrogates for the circumstances in which they will be applied. We reviewed tests of the effectiveness of surrogate species planning to see if research supports the development of generalized rules for (1) determining when and where surrogate species are an effective conservation tool and (2) how surrogate species should be selected such that the resulting conservation plan will effectively protect biodiversity or achieve other conservation goals. The context and methods of published studies were so diverse that we could not draw general conclusions about the spatial or temporal scales, or ecosystems or taxonomic groups for which surrogate species approaches will succeed. The science of surrogate species can progress by (1) establishing methods to compare diverse measures of effectiveness; (2) taking advantage of data-rich regions to examine the potential effectiveness of surrogate approaches; (3) incorporating spatial scale as an explanatory variable; (4) evaluating surrogate species approaches at broader temporal scales; (5) seeking patterns that will lead to hypothesis driven research; and (6) monitoring surrogate species and their target species.  相似文献   

13.
Florida has one of the two worst non-indigenous invasive species problems in the United States, and all such species are considered by statute to be a potential ecological problem. Unfortunately, little information is available about most of Florida's invasive species. Here, we provide information on range expansion of a population of one of the lesser-known species. The Palm Beach County, Florida, population of the northern curly-tailed lizard, Leiocephalus carinatus armouri, was examined for north–south expansion of its previously documented range. Observations were conducted as contiguous expansion outward from the previously known range. We found a substantial contiguous range expansion by a minimum of 46.3 km to the south and 34.1 km to the north. This species appears to be closely associated with coastal habitat degradation in the form of human infrastructure, especially ageing pavement, sea walls, buildings, and bridge bases.  相似文献   

14.
本研究通过对红雪茶基源种进行考证,并结合品种鉴定及野外生态调查,结果表明,红雪茶的基源种应为金丝刷(Lethariella cladonioides)和金丝带(L.zahlbruckneri),在这两个种群内,存在化学多态现象。市售的“红雪茶”主要由这两个种的四个化学宗所组成。红雪茶的分布中心主要在藏东南,滇西北及川西地区,目前红雪茶的资源已经受到了极大的破坏,日渐濒危。为加强对野生红雪茶资源的有效保护,提出了开展红雪茶种质资源保护的建议。  相似文献   

15.
CITES(濒危野生动植物国际贸易公约)是一个通过控制贸易的方法来维护物种生存及其持续利用的国际法规,其附录中所列的物种是重点管理的对象,主要根据现有的Berne标准来确定。但是,长期的实践证明,它已不能满足实际的需要。1992年6月CITES常务委员会要求世界保护联盟协助制定一个简明、实用、科学和客观的新标准,本文对此作一简介和讨论。  相似文献   

16.
The impact and significance of modern taxonomy on other fields in biology have been subjects of much debate. It has been proposed that increasing numbers of vertebrate species are largely owing to ‘taxonomic inflation’. According to this hypothesis, newly recognized species result from reinterpretations of species limits based on phylogenetic species concepts (PSCs) rather than from new discoveries. Here, I examine 747 proposals to change the taxonomic rank of birds in the period 1950–2007. The trend to recognize more species of birds started at least two decades before the introduction of PSCs. Most (84.6%) newly recognized species were supported by new taxonomic data. Proposals to recognize more species resulted from application of all six major taxonomic criteria. Many newly recognized species (63.4%) were not based exclusively on PSC-based criteria (diagnosability, monophyly and exclusive coalescence of gene trees). Therefore, this study finds no empirical support for the idea that the increase in species is primarily epistemological rather than data-driven. This study shows that previous claims about the causes and effects of taxonomic inflation lack empirical support. I argue that a more appropriate term for the increase in species is ‘taxonomic progress’.  相似文献   

17.
物种分布模型(SDMs)通过量化物种分布和环境变量之间的关系,并将其外推到未知的景观单元,模拟、预测地理空间中生物的潜在分布,是生态学、生物地理学、保护生物学等研究领域的重要工具.然而,目前物种分布模型主要采用非生物因素作为预测变量,由于数据量化和建模表达困难,生物因素特别是种间作用在物种分布模型中常被忽略,将种间作用...  相似文献   

18.
The success of alien species on oceanic islands is considered to be one of the classic observed patterns in ecology. Explanations for this pattern are based on lower species richness on islands and the lower resistance of species‐poor communities to invaders, but this argument needs re‐examination. The important difference between islands and mainland is in the size of species pools, not in local species richness; invasibility of islands should therefore be addressed in terms of differences in species pools. Here I examine whether differences in species pools can affect invasibility in a lottery model with pools of identical native and exotic species. While in a neutral model with all species identical, invasibility does not depend on the species pool, a model with non‐zero variation in population growth rates predicts higher invasibility of communities of smaller pools. This is because of species sampling; drawing species from larger pools increases the probability that an assemblage will include fast growing species. Such assemblages are more likely to exclude random invaders. This constitutes a mechanism through which smaller species pools (such as those of isolated islands) can directly underlie differences in invasibility.  相似文献   

19.
北京市建成区绿地植物物种来源分析   总被引:1,自引:0,他引:1  
为探讨北京市建成区绿地植物的物种构成、外来植物组成及其在不同功能区的分布,采用机械布点和随机抽样法对北京市建成区绿地植物资源进行系统调查。结果表明:(1)北京市建成区绿地植物外来引进种173种,外来归化入侵种20余种:(2)外来引进种以国内引进为主,境外起源物种中美洲和欧亚区系植物占绝对优势:(3)外来种丰度按大小排列为:大型公园〉高等院校〉居住区绿地〉街头绿地/街心花园〉附属绿地〉街道绿地〉片林绿地,而各绿地类型的入侵种数量没有显著差异。  相似文献   

20.
Sixty yeast strains, which belong to 32 species of the genera Debaryomyces, Kluyveromyces, and Pichia, and which were isolated from plant-, soil- or insect-associated habitats, were screened for their ability to biotransform the acyclic monoterpenes geraniol and nerol. The aptitude to convert both compounds (from 2.6 to 30.6, and from 2.7 to 29.1%/g cell DW (=dry weight), resp.) was apparently a broad distributed character in such yeasts. Depending upon the substrate used, the production of linalool, alpha-terpineol, beta-myrcene, D-limonene, (E)-beta-ocimene, (Z)-beta-ocimene, or carene was observed. Linalool was the main product obtained from geraniol, whereas linalool and alpha-terpineol were the main products obtained through the conversion of nerol. Yet, differently from nerol, the aptitude to exhibit high bioconversion yields of geraniol to linalool was an apparently genus-related character, whereas the ability to produce other monoterpenes was a both genus- and habitat-related character. The possible pathways of bioconversion of geraniol or nerol to their derivatives were proposed/discussed.  相似文献   

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