查询词典 biodiversity

ABSTRACT The viewpoint of coevolution is a new and important theoretical basis, which can be used to research the mechanism of biodiversity formation.

协同进化的观点是探讨生物多样性形成机制的一个新的重要理论基础，对于植物与植物间的协同进化还没有人研究过。

In contrast, the slash and burn methods used by colonist farmers in Brazil and Bolivia are unsustainable and destructive and have resulted in the degradation of soil, forest and biodiversity resources over large areas.

相比之下，刀耕火种的殖民者在巴西和玻利维亚的农民采用的方法是不可持续的和破坏性的，并在土壤退化，森林和生物多样性资源，造成大面积。

Biodiversity conservation is a global hot topic, but it should be implemented in community-based level.

生物多样性保护是一个受到全球关注的问题，但需要落实到社区。

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。

To find a balance between the needs of local people and biodiversity conservation, Crosby said.

要在当地人的需求和生物多样性保护之间取得平衡

Complicated in ecological conditions, China is the centre of evolutionary origin and biodiversity of many crucifer species. Transgene may transfer from Brassica napus to vegetable and wild species of B.rapa and B.juncea.

分析认为，中国是许多十字花科植物进化起源中心和生物多样性中心，生态环境类型复杂；转基因油菜的外源基因可以通过花粉向油菜、白菜B。

This institute setted up four scientific research organization: institute of biodiversity and ecological engineering, center for research and development of new drugs, institute of environmental and biological technology, center for research and development of dasheen, three departments: biology science, biological technology, biological resource and environment, four disciplines for undergraduate: biochemistry and molecular biology, ecology, cell biology and environment science, four disciplines for graduate: biology science, biological techonology, biological engineering and environment science.

学院现有生物科学、生物技术、生物资源与环境三个教学系和生物多样性与生态工程研究所、新药研究与开发中心、环境与生物技术研究所、魔芋研究开发中心四个科研机构；有生物资源与环境"211工程"建设国家重点学科和生物化学与分子生物学、生态学、细胞生物学、环境科学4个硕士学位点及生物科学、生物技术、生物工程、环境科学4个本科专业。

Landscape fragmentation is one of the major reasons which lead to the drastic degression or loss of biodiversity over the world .

景观破碎化是生物多样性下降的最主要的原因之一。

The researches cover silviculture, vegetation management, tree physiology, ecophysiology, dendrochronology, forest ecology, forest fire ecology, forest soil biology, biotechnology, forest genetics, forest entomology and pathology, forest practices effects on biodiversity and sustainability and forest economics etc.

该杂志研究领域涉及造林学、植被管理、树木生理学、生态生理学、树木年代学、森林生态学、森林大火生态学、森林土壤生物学、生物技术、森林遗传学、森林昆虫学与病理学、森林实践对生物多样性与稳定性的影响以及森立经济学等。

The Chinese-English bilingual teaching course of dendrology will establish an international bridge for students or even for other works like biodiversity researches, natural reserves, community development in the Southwestern Region of China.

树木学双语教学课程的设立，将逐步为学生今后参与云南、乃至我国西南地区生物多样性研究、自然保护、社区发展等方面工作架起一道国际化的桥梁。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。