查询词典 ecological systems

Ecological Alliance of Manufacturing Systems is one of the research contents of ecological manufacturing.

制造系统的生态联盟是生态制造的主要研究内容之一。

For such reasons, the author investigated comprehensively on cropping systems and agriculture development in Fenxin County from 2002 to 2004, using mathematics model and GIS, discussed the cropping systems characteristic and development orientation and optimized the cropping systems spatial distribution. The data were collected from literature, questionnaires to experts and farm households, on-site investigation and field experiments. The main results are as follows:1,Because of inconsequent exploitation and management of the resources, rapid increasing population in hilly region of red soil, the stress on soil, deterioration of farmland ecological environment and soil gleization become more and more serious. Natural features , water and thermal resources and species are abundance.

基于以上目的，作者于2002-2004年，通过资料调研、专家咨询、农户调查、实地考察和田间试验等手段，对江西奉新县的种植制度和农业发展进行了全面的调查，通过建立数学模型和运用地理信息系统，对奉新县的种植制度的特征和发展方向进行了全面的论述，并且对种植制度进行了空间布局优化，主要结果如下： 1、红壤丘陵区由于长期以来对资源的不合理利用和掠夺式经营以及人口的急剧增长，土地压力上升，农田生态环境恶化，土壤潜育化，土壤肥力退化非常严重，但区内自然条件优越、水热资源总量丰富、物种丰富，具有一定的区位优势，为区内种植制度调整提供了有利条件。

Six control technologies are introduced and they are multipond systems,grassed filter trips,wetland systems,eco-agriculture,slope ecological engineering,ecological treatment of wastewater and s...

它们的有机结合可形成控制非点源污染的流域生态工程。执行时，应该因地制宜，还要加强资金、管理和教育的投入。

Emergy, developed by Odum with the characteristics of common unit; allows all resources to be compared on a fair basis and provides a bridge that connects economic and ecological systems which supplies a scientific and feasible approach to the synthetic analysis and evaluation of agricultural engineering.

H.T.Odum教授提出的能值理论和方法因有共同的单位允许所有的资源在公平的基础上比较，提供了连接生态和经济系统的桥梁，为农业工程的综合分析和评价提供了一个科学的、可行的途径。

Therefore, this paper ,by the scope of the establishment of basic principles and systems, development and function of Chinese environment law, conducts deep research systematically. Combined with Chinese environmental current situation and present issues, and using the foreign advanced experience for reference, this paper ponders over the principles and basic systems adjustment of Chinese environment law. This aims at expounding necessity and significance of systemizing Chinese environmental law and environmental system mutually under current situation, and providing the important theoretical accordance and policy direction. This paper draws support from the gigantic effect of law in order to restrain the trend of ecological environmental deterioration effectively, make the ecological environmental awareness strike root in the hearts of the people, provide valuable intangible assets for the continuous development of national economy, and provide deeper theoretical reference for environment protection development in our country.

因此，本文力求透过中国环境法的基本原则和制度的产生、发展和功能以及法律体现这一视角，进行系统深入的研究，结合中国环境保护现状及存在问题进行探讨，借鉴国外先进经验，对中国环境法的原则和基本制度的调整进行思考，旨在阐明当今形势下加强我国环境立法与环境制度相成体系的必要性和现实意义，为环境法制建设提供重要理论依据和政策指导，借助于法制的巨大作用去有效遏制生态环境恶化的趋向，并使生态环境意识深入人心，为国民经济持续发展提供宝贵的无形资产，为我国环境保护的&入世&提供较深层次的理论参考。

Although there have been a great many papers on the Allee effect, they have mainly referred to only local populations and have not dealt with the relationship between the two and their impacts on the stability of ecological systems.

然而，虽然近年来关于Allee效应的研究文献非常多，但对于集合种群水平上的似Allee效应与局域种群水平上的Allee效应之间的关系，以及二者对生态学系统稳定性的影响的研究还相当缺乏。

In this paper, I have constructed models for local population and metapopulation dynamics. Then by mathematical analysis and numerical simulation, I focus my studies on the relation between the Allee-like effects at the metapopulation level and the Allee effects at the local population level and their impacts on the stability of ecological systems.

在本文中，通过建立局域种群和集合种群的理论模型，把局域种群动态和集合种群动态结合起来，用数学分析和数值模拟分析的方法研究了集合种群水平上的似Allee效应与局域种群的Allee效应之间的关系以及它们对生态学系统稳定性的影响，并对含Allee效应的物种的自然保护提供了理论依据。

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。

"HAARP is a weapon of mass destruction, capable of destabilising agricultural and ecological systems globally."

&HAARP 是一种大规模杀伤性武器，能够在全球范围内使农业和生态系统动荡不定。&

The compositions of cell membrane intact polar membrane lipids of bacteria and Achaea and their applications in the researches of biogeochemistry and microbial ecology are summarized in this paper. The recent progresses of IPLs applications are reviewed, with emphasis on those microorganisms that play a specific role in biogeochemical cycle, such as anaerobic ammoniumoxidizing bacteria, anaerobic methanotrophic Achaea, ammoniaoxidizing Achaea and marine Crenarcheota with tetraether lipids, or those special ecological systems, such as hydrothermal vent, cold seep and marine deep biosphere.

综述了海洋沉积物中细菌和古菌的细胞膜完整极性膜脂的组成特点及其在生物地球化学和微生物生态学等研究中的应用，重点评述了在生物地球化学循环中有特殊作用的微生物，如厌氧氨氧化细菌、甲烷氧化古菌、氨氧化古菌、具有四醚膜脂结构的海洋泉古菌等，或者是一些特殊生态系统，如冷泉、海底深部生物圈等研究中完整极性膜脂应用的进展。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。