浅谈节约型城市的构建

构建节约型社会是实现城市可持续发展的必然要求。节约型城市的构建应通过转变经济增长模式、推行循环经济、加强节能科技的创新,发展替代能源,同时结合政策手段、宣传教育和法律手段来实现。     

岱海流域水资源可持续利用研究

本文通过对岱海流域水资源进行深入的调查，研究和分析岱海流域水资源所面临的水量、水质以及环境生态问题，得出岱海流域水资源以及水环境问题的成因，提出岱海流域环境、资源、人口、社会经济相协调的可持续发展方案。     

我国纳米科技研究应用现状及发展趋势分析

综合介绍了国内纳米材料及其技术在诸多领域的开发应用现状，并对纳米科技未来的发展趋势和市场前景进行了预测和展望。     

溧阳市国家级生态示范区建设工作初探

综述了溧阳市创建国家级生态示范区的背景、依据、基础条件、创建的目标和技术路线，介绍了示范区建设的内容和具有特点的生态经济发展模式。     

基于政府-公众-企业协同的生态经营管理是欠发达地区可持续发展的关键

生态建设的生态效益转换的经济效益的转换速度，转换数量，转换成本，转换难易等直接影响生态建设的活力，效率和可持续发展，将生态效益转换的经济效益生态经营在其中起到关键作用，本文开创性探讨生态经营起因，内涵，功能，内容，技术，方法，手段等，为培育欠发达地区生态经营意识，能力，增强可持续发展能力指明了方向。     

人类自我科学管理是实现可持续发展的必然选择

现今人口规模的不断膨胀和物质生活水平的日益提高,对资源和环境造成的压力急剧增加。分析了世界现状和可持续发展面临的挑战之后,提出人类要实现可持续发展必须要进行自我科学管理,分别从人类自我定位、对待科技的态度、人口管理、人类消费管理4个方面进行讨论和阐述。人类首先需重新审视自己,进行自我定位;其次要正确对待科技;控制人口数量和转变不合理消费是目前人类自我管理的重要任务,对此提出一些实施对策。     

规划环评中公众参与有效性案例研究

针对规划环评的特点,通过秦皇岛经济技术开发区规划环评案例分析,就如何保证规划环境影响评价中公众参与有效性进行了探讨,提出了只有做到广泛的公众代表性、有效的公众参与形式、科学的问卷设计、合理的反馈意见处理,才能发挥公众参与在规划环境影响评价工作中的作用。     

Digit ratios (2D:4D), secondary sexual characters and cell-mediated immunity in house sparrows <Emphasis Type="Italic">Passer domesticus</Emphasis>

Homeobox genes regulate development of digits, and it has been suggested that the ratio of length of second to length of fourth digit reflects such genetic effects in a sex-specific manner. We show that digit ratios in the sexually dichromatic house sparrow Passer domesticus differ between sexes, with males having higher ratios than females, and that individuals produce consistent ratios on the two feet. If Homeobox or other genes had pleiotropic effects on development of digits, behavior, and physiology of males and females, we would expect secondary sexual characters and immunity to be related to digit ratio in a sex-specific manner. The size of the visible part of the black badge in February (a secondary sexual character), but not total badge size, was positively correlated with digit ratios, suggesting that males with more male-like digit ratios had larger visible badges. Because of sex-specific effects of development on secondary sexual characters and immunity, we predicted sex-specific differences in immune response to be related to digit ratio. House sparrows with large digit ratios had weaker T cell-mediated immune response than individuals with small digit ratios, particularly in females, implying that females with more male-like digit ratios had weak immune responses. These findings are consistent with the hypothesis that early development, as reflected by digit ratios, and genetics affect the expression of adult characters that are supposedly strongly contributing to fitness.     

Temporal constraints and female preference for burrow width in the fiddler crab, <Emphasis Type="Italic">Uca mjoebergi</Emphasis>

We studied sampling behaviour and mate choice in the fiddler crab Uca mjoebergi. Once a female selects a mate, she copulates in his burrow and remains there until releasing her aquatic larvae. U. mjoebergi occurs in habitats that are inundated only by the highest amplitude spring tides. Females can only release their larvae during these tides, and release before or after will result in complete failure of reproductive effort. Matings occur over a 5-day period near the end of neap tides. Our results suggest that within the mating period, females adjust their larval developmental rates by selecting specific burrows in which to incubate their clutches. We found that at the start of the mating period, females chose larger males as mates. Since male size was positively correlated to burrow width, females were selecting wide burrows and effectively incubating at lower temperatures. This would slow down the developmental rates of larvae. In contrast, females that mated late in the mating period selectively chose small males. By incubating in narrower, warmer burrows, these females may increase the developmental rates of larvae. We propose that females are selecting burrows to influence incubation rate and ensure timely release of their larvae. Female U. mjoebergi appear to adjust their preference for the direct benefits of mate choice to increase their reproductive success.     

天池风景资源开发过程中的环境预警评价

在天池风景名胜区专家咨询和环境质量综合分析的基础上,对天池风景名胜区旅游资源的开发活动进行了预警评价,提出了天池风景名胜区风景资源开发的保护对策,为天池景区的环境管理工作提供了依据。