| 1. | The ecological relationship of species , community and environment in elaeagnus mollis communities were studied by using twinspan and dca 本文应用twinspan分类和dca排序相结合的方法,研究了翅果油树群落的物种、植物群落与环境的生态关系。 |
| 2. | The ecological relationship between vegetation and environment was analyzed by using twtnspan and dc a . 19 associations were produced by twinspan 应用twinspan和dca相结合的方法对湿地植被的生态关系进行研究, twinspan的结果将湿地植被分为19个群丛。 |
| 3. | Twinspan and dca were combined in analyzing the ecological relationships between vegetation and environments of taiyuan urban zone , we get 8 types from 48 street examples as twinspan analysis results which is validated by the results of dca 在城区植被的生态关系研究方面,应用twinspan和dca相结合的方法,对48个街道样方进行分类和排序。 twinspan将城区48条街道分为8个街道类型。 dca排序结果基本验证了tiwnspan的结果。 |
| 4. | In the dissertation , we study the ecological relationship of plant communities . based on it , we not only study methodology of analysis of ecological relatioship , but reveal the ecology rules hiding in the disorder and vast and numerous data , which are aquired by a great lot of research 本文通过对植物群落生态关系的研究,不仅对生态关系分析方法进行了方法学研究,而且应用已建立的方法分析获得的大量调查数据,揭示了隐含在杂乱浩繁数据中的生态学规律。 |
| 5. | 1 . study on classifying and ordination of plant communities : acording to the ecological relationship between plant species , plant communities and environment , we study the communities types , structure and distributing pattern of midland of taihang mountain by using twinspan , dca , cca , dcca and so on 植物群落的分类和排序研究:应用twinspan分类和dca 、 cca 、 dcca等方法,从植物种、植物群落与环境的生态关系方面,研究了太行山中段各群落类型、结构及分布格局。 |
| 6. | In the analysis of ecological relationship between vegetation and environment , we got 11 community types by combining twinspan with dca . the first axis of oca indicated the elevation level and heat gradient while the second axis indicated slope factor . the analysis shows that the resource of tourism in pangquan gully is abundant and the construction is rational 第一轴基本上反映了各植物群落所在环境的海拔和热量梯度,从左到右,海拔在体呈升高趋势,热量呈下降趋势;第二轴基本反映了各植物群落所在的坡度梯度,从下到上呈良好的发展趋势,从群落类型来看,各群落类型在排序图上有规律地分布,得出庞泉沟植被结构合理,分布符合自然进化规律,庞泉沟生态旅游资源未受到破坏,人为因素不明显。 |
| 7. | The main work in the dissertation is to study the ecological relationship of plant comunities on midland of taihang mountain , and to reveal the distributing rule of vegetation and the environmental factors in midland of taihang mountain . it is significance not only in theory , but also brings into play important directive function for the virescence project of taihang mountain and makes it develop effectively 本文的主要工作就是对太行山中段植物群落的生态关系进行研究,揭示太行山中段植被的分布规律以及该地区的环境制约因子,不仅具有理论意义,而且将对太行山绿化工程发挥重要的指导作用,使这一生态工程能够更加有效地开展,早日实现改善该地区生态环境的目标。 |
| 8. | As the basic impetus and target of modernization of higher education , internationalization becomes the common choices and strategies of higher education ' s reform and development in developed countries . it is also the objective requirement to change its world position and ecological relationship in developing countries 作为高等教育现代化的基本动因和目标,国际化不仅成为发达国家高等教育改革和发展的共同抉择和普遍战略,也是发展中国家改变高等教育系统的世界地位和生态关系的客观需要。 |
| 9. | Despite the fact that in todays sweden , the ideal of a social welfare system free of commercial impediments is being confronted with a major challenge from the development of globalized economic operations fueled by advertising media , the depth of comprehension demonstrated by swedens young people with respect to the ecological relationship between nature and human activity is both remarkable and admirable 在瑞典,社会福利制度去商品化的理想,在全球化的经济运作下与无国界的媒体驱使下备受挑战,然其年轻生命对自然人文生态的认知,是令我们惊奇与感佩的。 |
| 10. | This paper selected the middle part of taihang mountain as study area . the species diversity , interspecific association and correlation , and niche breadth and niche overlap were studied . the community types , community structure , ecological relationships between species diversity and community types , environmental variables were analyzed in details 本文以太行山中段植被为研究对象,从植物群落的物种多样性、种间关系及群落优势种的生态位宽度和生态位重叠三个方面深入探讨和研究了该地区群落类型、结构、生态及分布格局,群落多样性与群落类型、生境、群落结构之间的关系,以及主要优势种的种间关系。 |