生态种的

The integated studies of the physiological and ecological behavior mechanism of diatoms and dinoflagellates adapting to the different water environment discovered that the physiological characteristics of diatoms was superior to these of dinoflagellate and all the other non-diatoms. Therefore, under the enough supply of nutrients, diatoms were natural and indispensable to become predominant species.

通过硅藻和甲藻的生理和生态行为机制以适应不同的水环境的综合研究，发现硅藻的生理特征很大的优越于甲藻等其它非硅藻，这样，在营养盐供给充足的条件下，硅藻理所应当成为浮游植物的优势种。

This article in summarizes in our country nature protection area construction achievement foundation, outlined the nature protection area to each kind of natural ecosystem, the wild biology, the domesticated spec ie s, the wild blood relationship to plant and the idioplasm resources conservation present situation, including has constructed the nature protection area for protection biodiversity various components quantity, the area, the distribution and the management; Has appraised the nature protection area to the biodiversity various components protection effect; Has analyzed the existence question and proposed that strengthens measure which the biodiversity protects.

自然保护区建设是保护生物多样性的最有效途径。至1993年底，我国共建立各类型自然保护区763个，总面积6618万hm2，约占国土面积的6.8%。本文在总结我国自然保护区建设成就的基础上，概述了自然保护区对各类自然生态系统、野生生物、驯化物种、野生亲缘种及种质资源保护的现状，包括为保护生物多样性各组分已建自然保护区的数量、面积、分布及管理；评价了自然保护区对生物多样性各组分保护的效果；分析了存在问题并提出加强生物多样性就地保护的措施。

In this study, six surfactants with different ionic type, molecular structure, and phenanthrene (3-rings PAHs) were used to test the effects of surfactant to the degradation of phenanthrene, and to the combined toxicity with the phenanthrene.

本篇论文以六种不同离子类型、分子结构的表面活性剂和以菲为多环芳烃的代表，研究了表面活性剂对菲降解的影响，和与菲共存时的复合毒性，以及表面活性剂对菲在模拟生态系统中的迁移转化规律的影响。

The whole reef-building process is closely related to occurrence and development of the metazoan reef-building communities.

群落的整体面貌、生态体系都是由群落内的关键种所决定的，如果将群落内起到核心作用的物种从群落内移走，那么群落的性质，生物的组成和功能都将发生变化。

The genetic diversity were comprehensive analyzed in this project through comparative study with the growth rhythm, morphology, palynology,cytology and chemical ingredients of 16 populations of pinellia ternata, which were collected from all around the country, applied computer techniques to analysis the DNA amplification electrophoresis chromatogram of 10 populations of pinellia ternata as well. The genetic relationship of the nature populations in different ecological region are confirmed. Populations of Pinellia ternata were classified on internal species.

本项目通过对从全国各地收集的16个半夏居群间的生长节律、形态学、孢粉学、细胞学、化学及其中10个半夏居群的DNA片断扩增后的电泳图谱比较研究及计算机数据分析技术，对半夏的遗传多样性进行综合分析，初步确定了我国不同生态区半夏各自然居群的遗传关系，划分了种以下单位。

They started with 15 to 40 different pure strains of algae and microscopic animals, and added these one at a time in various combinations and sequences to a large flask. After 10 to 15 days, if all went well, the aquatic mixture formed a stable, self-reproducing slime ecology -- a distinctive mix of species surviving off of each other.

他们从15至40种不同的单一水藻植株和微生物入手，依次把这些物种以不同的组合形式及先后顺序放入一个大烧瓶。10到15天之后，如果一切进展顺利，水生植物的混合体就会形成稳定的自行繁殖的湿地生态——相互依赖生存下来的与众不同的物种混合物。

The two tree water consumption characteristics, Populus simonii and Robinia pseudoacacie, and the interactions mechanism with environment factors were both studied at the level of leaf and singletree in terms of the modern technology of heat pulse sap flow and thermal dissipation sap flow probe. The two main purposes of study are to provide the science evidence in estimating the ecologic water consumption rules and to arrange better densities of the two tree species stand.

本文以北京市官厅库区水源涵养林的主要造林树种：小叶杨、刺槐为研究对象，采用当前国内外最先进的热脉冲式树干边材液流测定技术和热扩散式树干边材液流测定探针测定技术，从叶片和单株水平上探讨了刺槐和小叶杨的蒸腾耗水特性以及它们与环境因子之间的影响机理，其结果不仅可为更精确地估计生态用水定额提供科学依据，而且也可为该区域这两种树种的选择及其合理林分的密度起到一定的指导作用。

Uses method which the field investigation sample and the indoor analysis unify, 2007-2008 years live the unicast awnless brome lawn and the awnless brome and the alfalfa interlacing in the Inner Mongolian nationality university agriculture school test farm take 2 years mix broadcast the lawn and the colleague mix broadcast the lawn as the objects of study, have studied under the different sowing seeds way the forage grass to the soil physics and chemistry nature influence, finally indicated:the change tendency which under the different sowing seeds way increases the soil bulk specific gravity overall along with the soil layer depth to present after reduces first increases, is the 10-20cm soil layer is lowest; Looking from the 0-40cm soil layer's mean value, the unicast awnless brome lawn soil bulk specific gravity is smallest, the colleague mixes broadcasts the lawn soil bulk specific gravity to be biggest.

科尔沁草原是典型的农牧交错地区，长期以来，由于不合理利用草地资源造成该区生态环境严重恶化，农牧业生产受到严重影响[1]。建立高产优质的人工草地是解决我国高寒地区草畜供求季节不平衡的矛盾，促进草地畜牧业持续发展的关键措施之一[ 2]。无芒雀麦和紫花苜蓿都是营养价值高、适口性好、抗寒抗旱能力强的多年生牧草。将这两种牧草混播不仅能提高牧草产量和品质，延长草地使用年限，还能改善牧草的营养，提高牧草的适口性，有利于调制和青贮[3]。

This paper reviews predecessors' understanding on ecotone between agriculture and animal husbandry,introduces the concept applied in northern China and regional boundaries of the ecotone,and points out that zonal and azonal geographic factors are accountable for the interlocking characteristics of farming and animal husbandry in landuse patterns.

在综述了前人对农牧交错带的认识后，给出中国北方农牧交错带的概念和区域界线；认为土地利用结构的农牧交错性是地带性与非地带性双重影响的结果，其空间格局有6种区域组合类型；随着人口负荷的加大，调整土地利用结构是保证这一地带生态安全与粮食安全的基本出路。

The traditional national festival celebrates is one kind of extremely complex social culture phenomenon, is forgiving the disposition, the psychology, the belief, the idea, the thinking mode, the moral sentiment, the esthetic appeal which a national history forms and accumulates down, as well as many national culture in-depth structure connotation value orientation, is the national spirit the dismissal and the important carrier which is pregnant for a long time on the specific social soil raises, is a national ecology shape is most prominent, the most characterful demonstration.

传统的民族节庆是一种极为复杂的社会文化事象，包涵着一个民族历史形成和积淀下来的性格、心理、信仰、观念、思维方式、道德情操、审美情趣，以及诸多民族文化深层结构内涵的价值取向，是民族精神在特定的社会土壤上长期孕养的解雇和重要载体，是一个民族生态形态最突出、最具特色的展示。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。