西昌地区百合的促成栽培试验

本试验对西昌地区冬季促成栽培的几个亚洲系列百合品种进行了切花质量调查，质量指标包括：花期长短、花蕾长度、花枝硬度及长度、花蕾朵数等。综合各项质量指标，白色品种布鲁内罗（Brunello）、黄色品种波莉安娜（Pollyanna）表现最好，其切花质量均达切花百合分级标准的一级。     

Two dimensional deformation characteristics of bloom CC with liquid core reduction

A two-dimensional model was applied to simulate the liquid core reduction (LCR) technology of bloom CC using ANSYS software. The deformation characteristics of bloom under different liquid fraction and reducing amount are obtained. The results indicate that the main deformation condition of bloom shell is compressive strain, mainly undertaken by the liquid core, which increases with the enhancement of reducing amount. Solidified shell takes minor deformation. The longitudinalsection of bloom appears sunken and the narrow side bulges, which grow serious when the liquid fraction increases.     

基于多Agent的湖库水华形成机理建模

为藻类水华形成机理的研究提供一种行之有效的概念建模方法,提出用Agent智能仿真技术来搭建湖库水华形成机理模型。通过实验确定水华爆发关键因子,对湖库藻类生消机理进行深入研究,分析关键因子与藻类变化的关系。在一系列规范约束下,构建实体、Agent和Agent间的交互协作模型,动态地描述湖库藻类生消过程及其关键因子动态变化,对藻类生长趋势和湖库水系的能量流动和物质流动状态进行有效分析。     

竹子开花对大熊猫生存影响分析

大熊猫是我国的国宝,保护大熊猫具有重要的社会和生态意义,竹子周期性大面积开花对大熊猫的生存造成了威胁．探讨了大熊猫栖息地竹子开花的原因,分析了竹子开花对大熊猫的影响,提出了现阶段解决竹子开花问题以保护大熊猫的对策．     

南方湖库初春"水华"现象原因分析与对策

根据2004年3月海南省万泉河上游牛路岭水库"水华"事件调查监测结果,对此次"水华"现象发生原因进行了初步分析,并相应提出了防止"水华"现象再次发生的预防控制对策,对南方湖库初春"水华"现象控制有一定的借鉴作用.     

SnO2-montmorillonite composite for removal and inhibition Microcystis aeruginosa assisted by UV-light

Cyanobacterial blooms have become a serious pollution problem,in particular,for water resources.Microcystis aeruginosa(M.aeruginosa)is most common toxic cyanobacterial bloom in fresh waters.In this paper,Sn O_2-montmorillonite composite was prepared by ion exchange method and applied to remove M.aeruginosa with the assistance of UV-light.The structure of the resulting composite was identified by XRD,IR and TEM.It was determined that some Sn O_2nanoparticles were inserted into the interlayer of montmorillonite and some were dispersed on the surface of montmorillonite.M.aeruginosa removal efficiency was judged by the rate of 95%after treatment with 0.3 g/L Sn O_2-montmorillonite for 1 h.Sn O_2-montmorillonite composite absorbed M.aeruginosa and promoted M.aeruginosa lysis by damaging cell wall and membrane.The cellular contents,including protein and chlorophyll a,were then degraded with the assistance of UV-light,which inhibited the biological activity of M.aeruginosa.In fact,Sn O_2-montmorillonite composite removed M.aeruginosa by combination of adsorption flocculation and UV-induced catalytic degradation.Sn O_2-montmorillonite shows promise to become an effective material for the removal of algae and the cyanobacteria bloom.     

中国赤潮新记录种──球形棕囊藻(Phaeocystis globosa)

报道１９９７年１０月～１９９８年２月在中国东南沿海首次暴发的Ｐｈａｅｏｃｙｓｔｉｓ赤潮．对现场状况、受灾情况进行了调查．赤潮生物主要以群体形式出现,显微镜下观察,成千上万个细胞包埋在凝胶状的基质中形成中空的球形群体,直径从几十微米到３ｃｍ．自由单细胞近圆形,具双鞭毛和一根短的定鞭毛（ｈａｐｔｏｎｅｍａ）．结合本次发生赤潮的Ｐｈａｅｏｃｙｓｔｉｓ的形态特征、环境条件（水温、生物地理等）,认为本次赤潮种为：球形棕囊藻（Ｐｈａｅｏｃｙｓｔｉｓ　ｇｌｏｂｏｓａ　Ｓｃｈｅｒｆｆｅｌ）．分析网箱养殖密集区（Ｓ１、Ｓ２）和近外海（Ｓ３、Ｓ４）水样的结果表明：Ｓ１、Ｓ２的叶绿素ａ和总磷浓度明显高于Ｓ３、Ｓ４,总氮浓度则低于后者;氮磷比浓度明显低于后者;Ｓ１站氮磷比浓度与叶绿素ａ含量明显相关．氮磷比浓度与赤潮发生有密切关系．     

关于三峡电厂日调节调度改善库区支流水质的探讨

通过分析三峡水库初步蓄水以来在支流存在的水环境问题,提出:如果三峡电厂按较大规模进行日调节调度,一些支流和区域出现“水华”的情况就可得到缓解。根据三峡水库不恒定流数学模型模拟计算结果,若三峡电厂按现有能力最大规模地开展日调节调度,可在库区形成大范围的“潮汐”作用。库区水位规律性涨落可大量增加支流与干流水体交换,利于抑制支流“水华”现象的发生。建议三峡电厂进行日调节与支流“水华”控制的调度试验,寻求通过调度改善库区水环境的途径。三峡工程如果能通过改善调度来调节库区环境状况,不但对促进三峡水库尽快抬高蓄水位有积极作用,而且对协调水电工程与库区环境保护的关系也将开辟新的途径。