查询词典 ecosystem

This research is of complementary function for the study on temperate forest ecosystem, and of important scientific signification to investigate the service function and sustainability management of forest ecosystem.

本研究将对完整系统地研究温带森林生态系统具有补充作用，对揭示森林生态系统的服务功能和持续健康发展的规律具有重要的科学意义。

The theory of "harmonious forest farm" reckons that:①State-owned forest farm is an exoteric complex-system, which is the coupling of forest ecosystem, forestry economic system, and social system in forest farm;②Harmonious forest farm is the farm constructed under the background of socialist market economy and building a moderately prosperous society;③The features of "harmonious forest farm" are the development of production, the prosperity of life and good ecological environment;This farm is a modern state-owned forest farm, the symbols of which are the high value of itself, the good benefits of wokers and the abundance of forest resources;④The key of it is the harmony of farm and society, farm and environment as well as farmitself——that is to say,"harmonious forest farm" should aim to meet the needs of the country and thesociety; forest management should put maintaining and enhancing biodiversity, forest ecosystem health and integrity to the center; inside the forest farm, there should form the mechanism of balancing interests and learning mechanism for sharing at the core of the executive feedback mechanism of forest management, advancing the workers to form a comradely mutual aid relationship.

其要点是：①国有林场是开放的复杂系统，它由森林生态系统、林业经济系统、林场社会系统耦合而成；②和谐林场是在社会主义市场经济和全面建设小康社会背景下建设的林场；③和谐林场是以生产发展、生活富裕、生态良好为特征，以国有林场价值高、林场职工福利好、森林资源丰富为标志的现代国有林场；④和谐林场的关键是要求林场与社会、林场与环境以及林场自身达到和谐，即"和谐林场"必须以满足国家与社会的需求为目的，在森林资源经营上，始终以维持与提高生物多样性、森林生态系统的健康与完整为中心，在林场内部形成以森林经营方案执行反馈机制为核心的利益均衡机制和学习共享机制，促进林场干部职工形成同志式互助关系。

This paper is the research of the compound ecosystem view, and it mainly be composed of the nature, the economy, and the humanities three continuo us ecosystem landscape.

生态环境是人类心目中最美好的理想居住形态，在实现这一目标的过程中，必然涉及到多方面的因素。

Based on the status of agricultural structure this paper indicated the necessity of agricultural structure and put forward the aim of which was to change the grazing stock raising into the artificial meadow structure around oasis marginal belt of diluvial fan in order to restore mountainous ecosystem and play the function of ecosystem service while getting to the good of eco ecology .

本文在论述天山北坡农业结构现状的基础上，指出其农业结构调整的必要性，提出了农业结构调整的目标就是改变目前天山的放牧性畜牧业，恢复山地生态系统，发挥山地的生态服务功能，在绿洲－扇缘带建立新的草地农业的产业结构，实现生态经济双赢；并提出了以棉粮为主转向实行草棉粮的综合性的改造以及从淡水绿洲转向咸水绿洲的农业结构调整的战略对策。

Based on the status of agricultural structure this paper indicated the necessity of agricultural structure and put forward the aim of which was to change the grazing stock raising into the artificial meadow structure around oasis-marginal belt of diluvial fan in order to restore mountainous ecosystem and play the function of ecosystem service while getting to the good of eco-ecology. Also, two strategic countermeasures for the agricultural structure were presented which were that implementing integrated alteration from cotton-grain to grass-cotton-grain and from fresh water oasis to salt water oasis respectively.

本文在论述天山北坡农业结构现状的基础上，指出其农业结构调整的必要性，提出了农业结构调整的目标就是改变目前天山的放牧性畜牧业，恢复山地生态系统，发挥山地的生态服务功能，在绿洲－扇缘带建立新的草地农业的产业结构，实现生态经济双赢；并提出了以棉粮为主转向实行草棉粮的综合性的改造以及从淡水绿洲转向咸水绿洲的农业结构调整的战略对策。

But most natural forests were transformed into the artificial cultivated ecosystem—such as farmland, orchard, tea garden, economic forest, artificial forest, and others-which was result from the managing action by mankind such as disforest and reclamation, building plantation. It presented diversification of forest ecosystem conversion mode.

在历史上，中亚热带山地生态系统的自然植被基本上为天然常绿阔叶林，但由于人类的经营活动(如毁林开辟耕地、营造人工林等)，大部(来源：A85BC论文网www.abclunwen.com)分天然林已转变为人工栽培用途的生态系统(如农田、果园、茶园、经济林、人工林等)，呈现出多样化的森林生态系统转换模式。

The effects of species diversity on ecosystem functioning is one of the most important problems in ecosystem research.

物种多样性对生态系统功能的影响是生态学领域所研究的核心科学问题之一。

Keywords Elodea Canadensis Michx;ecosystem rehabilitation;water ecosystem;ability of purification;photosynthesis;environmental factor;bi-pollution

Article From 河海大学；环境科学硕士论文 2005年度伊乐藻；生态修复；水生态系统；净化能力；光合作用；环境因子；二次污染

The decomposition of exoenzyme controls the material circulation of wetland ecosystem, which is the restricted step of the decomposition process of organic matters in wetland ecosystem.

胞外酶是土壤酶的一种重要类型，指在细胞内合成后穿过细胞质膜以游离态存在于环境中的酶。

Based on analyzing uncertainties when determining indicators system of ecosystem health assessment, an indicators system and a model for the evaluation of urban river ecosystem health was proposed. The model could offer the feasible and reliable base of decision-making for the river environment management.(4) An integrated method for land suitability evaluation based on geographic information systems under uncertainty was proposed.

运用模糊层次分析法，建立基于不确定性的模糊层次综合评价模型，并将理论应用于长沙市河流生态系统，查明城市河流的健康状态，研究结果可丰富河流生态系统健康研究理论体系，弥补当前生态系统健康与修复研究中城市河流方面的缺乏，对退化城市河流生态系统的保护和恢复起到很好的指导作用。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48