旅游景观生态环境分析与评价系统研究

本文主要运用旅游学与景现生态学的融合理论,以扎龙自然保护区为例,通过对景区自然环境、社会环境、经济环境和人文环境的分析,设计构建了一个基于AHP和模糊数学的评价模型,并利用其对扎龙保护区进行了评价,最后给出相应的对策和建议.     

千岛湖流域水环境功能区划与生态环境保护对策研究

千岛湖是较为典型的大型深水湖泊,近年来水环境质量在湖体上存在差异.认识这种差异并根据差异的程度,对湖泊进行区划,并因地制宜制定千岛湖水域的环境保护措施,制定湖泊水环境保护的方向性和战略性目标,具有重要的现实意义.文章从生态林业、生态工业、生态农业和生态旅游业等领域,提出了千岛湖生态环境保护的对策,以期为国内其它湖泊提供环境保护的借鉴.     

太湖水温分层现象的监测与分析

水温是湖泊环境研究中的重要物理参数之一。湖泊中水温的状况及其分层现象将直接或间接的影响到湖库水环境中的各种物理、化学和生物过程。深水型湖泊的温度成层现象为众多学者所公认,也是研究热点之一,而浅水型湖泊的温度成层温差小、持续时间短,因此鲜有此方面的研究。本文以典型浅水湖泊－－太湖为研究对象,根据现场近3个月的监测资料,分析了太湖的水温结构,证明了太湖水温日成层现象的存在,并对太湖日成层现象发生规律及其影响因素做了初步的探讨。     

Measurement of chlorophyll fluorescence reveals mechanisms for habitat niche separation of the intertidal seagrasses <Emphasis Type="Italic">Thalassia hemprichii</Emphasis> and <Emphasis Type="Italic">Halodule uninervis</Emphasis>

In Taiwan, Thalassia hemprichii dominates the upper intertidal zone, whereas Halodule uninervis occupies the lower intertidal zone. We tested the hypothesis that T. hemprichii is better adapted to high irradiance and more resistant to air exposure than H. uninervis. The photosynthetic efficiency, damage, and extent of recovery were determined by measuring chlorophyll fluorescence using pulse amplitude modulated fluorometry. Both species growing in tidal pools, in response to high irradiance alone, revealed a small depression in maximal quantum yield of photosystem II (Fv/Fm) at noon. The second experiment compared the effect of air exposure alone and the combined effect of air exposure with high irradiance by interposing a shading screen on both species, growing in the intertidal zone over a diurnal cycle. Values of Fv/Fm of both the shaded and irradiated T. hemprichii remained high at low tide. However, H. uninervis exhibited a marked depression following air exposure and a synergistic depression under the combined effect. The experimental manipulations of exposure time demonstrated that the tolerance of T. hemprichii to the combined effect was longer and the recovery from air exposure following re-submersion was better than those of H. uninervis. Both species were more susceptible to the combined effect in the dry season than in the wet season. Our results suggest that air exposure is more important than high irradiance in constraining the distribution of H. uninervis in the upper intertidal zone. This was confirmed by transplantation experiments in which a rapid decline of H. uninervis was observed after transplantation into the upper intertidal zone. In the lower intertidal zone, measurements of the response of the photosynthetic electron transport rate to irradiance demonstrated that the transplanted T. hemprichii exhibited a sun-type response and H. uninervis a shade-type response.     

福州市园林绿地植物应用调查研究

根据福州市134个园林绿地的调查，分析和总结福州市各类园林绿地（公共绿地，专用绿地，居住区绿地，道路绿地等）的植物种类构成，空间结构和植物配置的生态功能和景观效果，对福州市的园林绿化提出了一些建议。     

国外交通运输战略环境评价的实践及对我国的启示

战略环境评价（SEA）作为一种重要的环境管理工具和实施可持续发展战略的手段．已经被融入到各种战略决策中。基于国外近几年交通运输SEA的文献。阐述了国外开展交通运输SEA的现状。分析了国外开展交通运输SEA的理论研究和实践经验。结合我国国情．提出了我国进一步开展交通运输SEA研究和实践的建议。     

填埋场内部水分运移数学模型研究进展

填埋场内部水分运移对渗滤液的水质和产生速率有重要影响。对于生物反应器填埋场。控制填埋场内部的水分分布是研究的关键之一。综述了填埋场内部水分运移数学模型的研究进展。指出了目前模型中存在的问题和今后研究的方向。     

深圳近岸海域环境质量调查和评价

根据深圳近岸海域环境质量调查资料，用海水标准（GB3097－1997），按超标分类法和污染指数法对深圳近岸海域水质（含潮间带）、沉积物、生物质量状况分别进行评价，查清了该区域环境质量现状，确定了影响环境质量的主要污染物。     

Genetic variability in Gymnodiniaceae ITS regions: implications for species identification and phylogenetic analysis

The internal transcribed spacer (ITS) regions and 5.8S rRNA genes from several strains of toxic Gymnodiniaceae were sequenced and subjected to phylogenetic analysis with other Gymnodiniaceae species. Sequence comparisons showed that high sequence divergence existed in Gymnodiniaceae, especially in the genus Gymnodinium. The amplicons of the ITS regions from Amphidinium and Gyrodinium species were 438–439 and 604–605 bp, respectively, and those of the Gymnodinium species ranged from 575 to 615 bp. The mean distance value within Gymnodinium, calculated from the ITS sequence, was 0.68827 (range: 0–0.92323), 0.11342 for Amphidinium (range: 0.00467–0.17120) and 0.2005 for Karenia (range: 0.00521–0.29971). Low distance values were found within the species Gyrodinium instriatum (<0.01) and Karlodinium micrum (<0.02). Amphidinium remarkably had a shorter ITS than did other genera in Gymnodiniaceae, this implied that Amphidinium might be distant from the other Gymnodiniaceae and supported Saunders opinion that the taxonomy of Amphidinium needs to be reevaluated. Largely congruent phylogenetic trees were produced by the maximum-parsimony method (PAUP), maximum-likelihood method (PAUP) and Bayesian inference (MrBayes), whereas the three analyses showed that the genera Gymnodinium and Karenia are unresolved groups in phylogeny. Minor sequence divergence was found within the different clones of Amphidinium carterae, suggesting that the ITS regions are suitable as genus- and species-specific oligonucleotide probes to rapidly detect and identify the red tide-forming algal species.Communicated by O. Kinne, Oldendorf/Luhe     

乌鲁木齐市市区学校环境噪声现状调查与评价

对学校环境噪声作了初步调查表明:学校环境噪声主要污染源来自交通噪声,危害最大的是位于交通干线两侧的学校.上课时间能持续在64.5～66.9dB(A)之间的较高水平.其噪声污染与距噪声源距离呈负相关(r=-0.679).