演替

Based on this background, the interactions between plant secondary succession and arbuscular mycorrhizal fungi in heathland ecosystems were explored, through spot investigation and laboratory stimulation. Results indicates a close relationship between the inigenous AMF and plant diversity.

本项目以此为立题背景，通过实地调查、室内模拟两个途径，研究草山草坡生态系统中植物次生演替与丛枝菌根真菌的多样性之间的互作关系。

During restoration experiment, several functional and structural parameters (number of species, diversity index, percentage of phytomastigophora, community pollution value, heterotrophy index, similarity index between communities) were determined weekly.

在修复实验过程中，定期测定微型生物群落的各种结构和功能参数（种类数，多样性指数，植鞭毛虫百分比，群落污染值，异养性指数，群落结构的相似性指数），通过它们的变动机制和规律，再现了修复过程中微型生物群落的演替过程。

The results are listed as follows:(1) In peneplain with plenty water-resource, hexagonal spatial structure of urban system can be formed. Due to differential competed function of central places, the hexagonal system is distorted. The result is that the area covered is decr eased and the girth is unchanged——but every border is usually unequal;(2) A pattern of pentagonal system evolves from hexagonal system controlled by a river;(3) A pattern of quadrilateral develops from hexagonal system under two parallel rivers;(4) The equal distance distribution of central places in narrow geographic space has its special reasons. The results are very important for understanding urban's formation and development and urban plan in Huang-Huai-Hai plain.

本文通过自然地理因素中水文、地形这两个重要要素对城镇体系空间结构形成的影响，分析了华北平原区在不同要素影响下的城镇体系空间结构样式：①在水源充足的准"均质"河北冲积平原上，基本满足六边形形成条件，但由于周边中心地发展竞争力不同，故使得正六边形发生畸变——覆盖面积减小而周长却保持不变；②构建了在一条河流影响下的六边形网络结构朝五边形网络演变的模型；③构建了在平行状河流作用下六边形网络向四边形网络演替的模式；④指出了在水源充足的狭长地理空间，城镇体系空间结构发育成等间距的现象与原因。

This is largely affected the process of succession in Xinjiang carpet and development.

这在很大程度上影响了新疆地毯和发展的演替过程。

In four birds feeding guilds, the density of insectivore had significantly increased in artificial coniferous forest after restoration for 40 years.

在鸟类4个取食集团中，经过40a演替的人工针叶林可以显著提高食虫鸟的密度。

The research results will benefit the understanding the effect of intensive agriculture on soil property variability, to realize regional sustainable agricultural development and precision farming.

研究结果为分析集约化农业对土壤性质变异演替的影响规律、实现区域农业可持续发展和精确农业奠定基础。

This succession was based primarily on a series of deposits and events not directly related to glacial and interglacial periods,rather than on the more usual modern method of studying biological remains found in interglacial beds themselves interstratified within glacial deposits.

所这一序列演替所依据的，主要是一系列与冰川期和间冰期并不直接相关的地质沉积物和地质事件，而不是依据更为普遍的现代方法，去研究间冰层中所发现的生物残留物，而这些间冰层本身又在冰川沉积物发生间层化。

This succession was based primarily on a series of deposits and events not directly related to glacial and interglacial periods, rather than on the more usual modern method of studying biological remains found in interglacial beds themselves interstratified within glacial deposits.

这一序列演替所依据的，主要是一系列与冰川期和间冰期并不直接的地质沉积物和地质事件，而不是依据更为普遍的现代方法，去研究间冰层中所发现的生物残留物，而这些间冰层本身又在冰川沉积物发生间层化。

To glacial and interglacial periods,rather than on the more usual modern method of studying biological remains found in interglacial beds themselves interstratified within glacial deposits.

这一序列演替所依据的，主要是一系列与冰川期和间冰期并不直接相关的地质沉积物和地质事件，而不是依据更为普遍的现代方法，去研究间冰层中所发现的生物残留物，而这些间冰层本身又在冰川沉积物发生间层化。

The characteristics and scientific value of ecological succession in Danxia Landform were discussed in this paper.

论述了丹霞地貌区生态演替的特征及其科学价值。

This is not an ordinary box, which is used as a background picture of the dialog box, very pretty.

详细说明：这可不是一个一般的对话框，它是用图片作为背景的对话框，非常好看。

Conceal me what I am,and be my aid for such disguise as haply shall become the form of my intent.

遮掩我的身份，帮助我，我的面具将成为我的目的。