生态种的

Through the test of water absorbing, water holding and water releasing performances of all water retention agents, sawdust, vinegar stillage and cabbage palm, this paper points out the affect on ecological concrete of different water retention agent and also conclude the affect on ecological concrete holding water or water releasing of spacing ratios, water retention agents, materials addition and different stones.

通过对SAP高吸水树脂、聚丙烯酰胺和甲基纤维素三种保水剂、锯末、醋糟、棕榈对生态混凝土吸水、保水、失水性能的测试，分析得出三种保水剂对生态混凝土的影响关系以及阐述了空隙率、保水剂、添加剂以及骨料种类对生态混凝土保水和失水的影响；最后对保水剂进行了优选，并对保水机理进行了探索性研究。

First, this article considers that rural realistic ecosystem culture is deficient via contradistinctive analysis of rural realistic ecosystem culture and new-style ecosystem culture.

论文首先通过对农村现实生态文化和新型生态文化的对比分析，认为农村现实生态文化是一种有缺陷的生态文化。

As a special biological resource, water sustains the operations of all kinds of ecosystems in polder area, not only the elementary basic for human life and work, but also natural ecological structure, process and environment.

圩区内的水体作为一种特殊的生态资源，支撑和维持着区内各种生态系统的运行发展，不仅提供了人类生活和生产活动的基础资源，还具有维持自然生态系统结构、生态过程与区域生态环境的功能。

The authors analyzed the approach of resource use and the relations among members in industrial ecosystem based on the food chain types of natural ecosystem, and attempted to put forward three development models of eco-industrial parks: grazing EIPs, parasitic EIPs and saprophytic EIPs.

基于自然生态系统食物链类型，分析了产业生态系统的资源利用方式以及成员间的相互关系，尝试性地提出适合我国生态产业园区发展的3种典型模式：牧食型生态产业园区、寄生型生态产业园区和腐生型生态产业园区。

In this dissertation, four aspects of ECM fungi were studied in a subtropical forest, a ECM fungi identification and biodiversity estimation, using morphological and molecular ways; b genetic structure of ECM fungi population, taking two case studies; c structure of ECM fungal community, based on sporocarp and plant investigation over-ground; and d growth response of host and non-host plant to ECM fungi inoculation.

由于外生菌根真菌的宿主植物常常是一些生态系统的优势种和建群种，并且这些真菌还参与了许多森林生态系统的有机和无机元素循环、物种的竞争和共存、生物多样性的维持、生态系统的演替等过程，因而对外生菌根真菌的研究有助于对这些生态系统维持和演替机制的深入理解。

There is a background and process of the idea of circulative economies and the new model of the development will produce a great impact on the economic development of our country.

循环经济是一种新的经济形态，其本质上是一种生态经济，它要求遵循生态学规律，合理利用自然资源和环境容量，在物质不断循环利用的基础上发展经济，使经济系统和谐地纳人到自然生态系统的物质循环过程中，实现经济活动的生态化。

Objective To determine the niche breadth and overlap in eleven dominant species of gamasid mites parasitic on 39 species of small?mammal hosts around Biluoxueshan Mountain in Weixi, Yunnan.

目的 应用现代生态学中生态位的理论和方法，对云南省维西县碧罗雪山周边地带11种医学革螨在39种小兽宿主资源上的生态位宽度和生态位重叠进行研究。

On the ecosystem health, definitions from utilization and ecosystem views are introduced, the contents and difficulties in assessing it are discussed. On the biodiversity enhancement, the relationship between forest structural complexity and forest biodiversity are discussed, the significance of old growth structure are highlighted, and measures of changing forest structure to promote forest biodiversity are put forward. On the landscape planning in forest management, some patterns, theoretical foundations and models are introduced, especially three conceptual models, i.e., key habitat\|corridors model, nature landscape model, and supportive features model. On the alternative silvicultural systems, reasons for developing alternative silvicultural system by mimic of nature disturbance are discussed, and some advanced techniques and their ecological basis are noted. Finally, on the ecosystem service, its contents and importance of assessment are illustrated.

关于森林生态系统健康，讨论了不同角度对生态系统健康的定义和不同层次上的生态系统健康的内容及评价生态系统健康的困难所在；②关于森林生物多样性，探讨了森林结构复杂性与生物多样性的关系，老龄林结构对森林生态系统的意义和作用，以及如何通过经营调整结构促进生物多样性；③关于森林经营的景观规划，描述了进行景观规划的途径、理论和模型，并对三种概念模型进行了介绍；④关于森林经营的替代技术体系，介绍了模拟自然干扰设计替代技术体系的原理，分析了替代经营技术体系产生的原因和有关最新技术研究进展；⑤关于森林生态系统服务，讨论了生态系统服务的基本内容和评价在森林生态系统管理中的重要意义。

The main contents include:(1) Survey on construction technologies of ecological river ;(2) Discussion on ecological restoration technologies in canalized river in china;(3) Comparative study on two kinds of filler m.

具体研究内容包括：(1)生态河道构建技术综述；(2)探讨我国渠化河道生态修复的方法；(3)抛填式生态河床两种填料的比较筛选；(4)优选材料构建的生态河床模型对污染河水处理效果的研究；(5)工程启动期与微生态系统初建期对污水处理效果的对比研究；(6)生态河床模型在冬季低温条件下对污染河水处理效果的研究。

This paper concerns the analyses of niche breadths of and overlaps bet-ween several plant species in 3 Kobresia communities in the Haibei Research Station using the formula described by Levins and Pianka.

本文利用Levins和Pianka公式，在多维生态因子梯度上测定了海北地区高寒草甸三种嵩草群落中若干植物种的生态位宽度和生态位重叠。

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。