生态

Applyed Levins Index corrected by Corwell and Wang gang Index, the niche breadth and niche overlaps of 20 species' in alpine meadow of Bayanbulak were measured at two resource dimension levels.

本文采用Levins提出经Corwell修正指数和王氏重叠指数，在土壤pH值和土壤全盐二维生态因子梯度上，测定了巴音布鲁克高寒草地20种主要植物种群生态位宽度和生态位重叠值。

MethodsFive indexes, ShannonWeaner diversity value, Pielou uniformity value, dominance value, Levins niche width value and Petraitis niche overlap value were calculated to describe the community structure and niche characteristics of the HFRS host rats in the experimental districts.

方法以ShannonWeaner的群落多样性指数、Pielou群落均匀度指数、优势度指数、Levins生态位宽度指数、Petraitis生态位重叠指数定量描述疫区内HFRS宿主鼠类的种群结构及生态位特征。

In inche overlaps, the niche overlop of B. platyphylla and P. davidiana, B. platyphylla and A. mono, B. platyphylla and J. mandshurica were big. Otherwise, P. orientalis, Q. aliena, Ailanthus altissima, U. macrocarpa with other species were small.

3在生态位重叠指数中，白桦和山杨、色木槭和白桦、白蜡和胡桃楸、色木槭和山杨生态位重叠较大，而侧柏、槲栎、臭椿和大果榆与其他的多个主要树种的生态重叠指数较小。

In the aspect of niche, the niche breath of B. platyphylla, Quercus aliena, Fraxinus spp., B. dahurica were big, but A. mono, Ulmus macrocarpa, Armeniaca sibirica, Platycladus orientalis were small.

2在生态位方面，白桦、槲栎、白蜡、黑桦的生态位宽度较大，而色木槭、大果榆、山杏、侧柏的生态位宽度较小。

The average of temporal niche breadth of mango anthracnose was 0.1177 according to disease index of leaf, while 0.2639 according to disease index of fruit.

时间生态位宽度指数分别为0.1177和0.2639，说明芒果炭疽病在时间维上的利用程度小，其发生和发展具有条件性；空间生态位宽度指数为0.7047和0.9040，病菌能够充分利用各空间资源；营养生态宽度指数为0.6662和0.5796，说明病菌可以侵染各品种，但品种间的抗病性有较明显差异，台农1号抗病性较强，红芒6号、凯特和白玉较易感病。

The semi-variogram values of above-ground biomass of perennial herbs and Mesophytes, following the increase of spatial distances, showed decreasing trends when semi-variogram values exceeded the effective range.

群落中生态功能群旱生植物的波动变化不仅对群落盖度、草场的生产力有直接的影响，而且对草场群落及其生态系统的稳定和生态功能的发挥具有重要作用。

The design basis and methods are discussed in the areas such as the use of energy, the conservancy and seal of heat, natural ventilation, the use of mid-water, the afforestation, and the materials of ecological architecture. All these are considered on the basis of the elemental relation between architecture and natural environment in order to make people have a deeper understanding and grasping of such a design.

本文试图从建筑与自然环境的基本联系入手，从能源利用、保温隔热、遮阳、自然采光、自然通风、中水利用、绿化、生态建材等方面阐述生态建筑的设计原理与设计方法，使我们对生态建筑的设计有深入的了解和掌握。

The urban ecosystem is a composite system that contains natura...

城市生态系统是城市自然生态系统和城市经济、社会生态系统的复合系统。

The core of the theory in ecological construction is the basic frame that is constructed by the theorise of the society economy nature compound ecological system,the system ...

近年来我国在农业生态工程、工业生态工程、水陆生态工程、生态县建设方面，取得了一定的经验。

Based on the research on the evolution mechanism of information ecological communities,and by the use of the system development view and the related theories of complex systems,this paper redivides the evolution process into formative process,linear evolution process,non-linear evolution process and dissolution process according to the essential characteristics of information ecological communities.

本文在信息生态群落演化机理的研究基础上，运用系统发展观和复杂系统的相关理论，根据信息生态群落演化过程的本质特点，对演化过程进行了重新划分：信息生态群落的结体创生过程、线性常规演化过程、非线性超常规演化过程和分化解体过程。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。