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The origin that its ecological environment degradates seriously lies in the congenital and fragile natural ecosystem, superpose the extremely unreasonable human activity, and make people and natural relation in sharp antithesis.

生态环境严重退化的根源在于先天脆弱的自然生态系统中,叠加了极为不合理的人类活动,使人与自然的关系处于尖锐的对立之中。

The effect of the natural enemies were assessed according to the analysis, which revealed that the parasitoids played more significant role than the predators, and that Citrostichus phyllocnistoides which had the closest synchrony and sympatry with citrus leafminer P.citrella, should be considered as dominant natural enemy, and be protected and utilized to control the citrus leafminer. Wide niche and distribution as Orius sauteri has, its narrow overlap showed the less close sympatry and synchrony as well as impossibility to control the prey.

寄生性天敌群子强于捕食性天敌群子,表明在自然环境中寄生性天敌群子对桔潜蛾的控制作用强;捕食性天敌小花蝽Orius sauteri虽然食谱生态位宽,但生态位重叠却小,说明这种天敌尽管分布广泛,可在时间和空间上没能有效"跟随"害虫的发生,对害虫控制作用不大;寄生性天敌短腹桔啮小蜂Citrostichus phyllocnistoides与桔潜蛾在时间上的同步性和空间上的同域性均优于其它天敌,为优势天敌,应加以保护和利用。

From the point of synecology,3 different forest types of human-caused disturbance were investigated.

随着城市生态园林的不断发展,人们对林地在城市生态环境改善中的作用日益重视,主要表现在对城市森林和城市林业方面的探讨,其中不乏有对"城市森林"组成和结构特点的研究[1-3]。

Especially for urban ecosystem health, there aren' t a mature system info and evaluation methods .

目前生态系统健康作为一个新的学科,许多方面都处于探索和发展阶段,尤其是城市生态系统健康研究刚刚开展,至今没有成熟的理论体系和评价方法。

At present, under the guidance of systematology, information theory and cybernetics, people should obey eco-environment succession pattern so as to take aim at well circulation of eco-environment and harmonious development between man and earth relations.

目前,要在系统论、信息论、控制论的指导下,遵循生态环境演替规律,以实现生态环境良性循环以及人地关系的和谐发展为最终目标。

According to the new comprehension of ecological theory and sustainable development, several suggestions, aimed at developing economic and protecting ecosystem, are put forward, such as designing fine ecological structure, installing the monitoring points in the reservoir to get changing data of water, developing taintless industries to protect water with water, playing government role in the ecological protection and so on.

基于对生态学原理和可持续发展的新认识,从区域发展和生态保护入手,对昌乐县水源地保护提出了构建良好生态结构,建立水库长期监测数据库,"以水养水",发展无污染产业,充分发挥政府在水源地保护中的作用等建议。

Through the research on the aprraisal of oil spill pollution damage to marine ecosystem and the calculation results of"Tasman Sea"oil spill, it shows that the damage to marine ecosystem serving function is more severely. We should firmly build up the notion that environment has value and protect marine environment to realize the sustainable development of marine.

通过本文生态污损评估体系的探讨研究和实例计算结果的分析可见,溢油对海洋生态系统服务功能价值的损害更大,我们在实践中要牢固树立海洋有价的观念,保护海洋环境,维护海洋权益,实现海洋的可持续发展。

Not only have considerable meaning to the human being in the aspect of the ecological science and telluric phylogeny but also possess its unique value of view and admire and use in the aspect of natural aesthetics and environmental iatrology while with elegant hill,serene water,exotic spring ,wonderful rock,excellent hole,Wudalianchi is a comprehensive showplace which combined ecological tour with holiday recuperation and professional exploration and is called "a bright pearl inlayed in the Eurasia Bridge"

五大连池风景名胜区不仅在生态科学和地球发展史方面对人类有重大意义,而且在自然美学和环境医学方面具有独特的观赏价值和应用价值。这里山秀、水幽、泉奇、石怪、洞妙、是集生态旅游观光、度假健康疗养、专业考察为一体的高含量、综合型风景名胜区,被誉为镶嵌在欧亚大陆桥上的一颗璀璨的明珠。

The ceremony was all about the natural world we live in," says Eileen."We chose the tepee because its only impact on the environment is holes in the sand.

当更多的土地被开发,海岸的生态系统以及依赖于此生态系统的物种将遭到破坏。

Forest, which is the main body of the terrestrial ecosystem, is the most important renewable natural resource.

森林是陆地生态系统的主体,是人类最重要的再生资源,森林资源的破坏和匮乏是生态环境恶化的开始。

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