生态种
- 与 生态种 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Therefore, we should change the traditional consumption mode, build up a kind of consumption mode which accord with environment rule—— ecotype consumption mode.
为此,必须改变传统消费模式,建立一种符合生态规律要求的、生态化的消费模式——生态消费模式。
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Karst moss is a unique ecosystem, which provide good environment for abundant biodiversity of epiphyte aquatic protozoan community.
岩溶藓类是一种独特的生态系统类型,维持了丰富的附生水生原生动物群落多样性。2006年11月26日至2007年1月26日,对贵阳市香纸沟岩溶沉积环境中8种藓类附生水生原生动物群落进行了野外生态调查,采集样品和标本48份。
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This paper analyzes the main problems of agricultural development in the southern area of Ningxia province, summarizes the 20-year experiences of the experimental zone in the area, and puts forward four different models of eco-agriculture, fruit-vegetable model, fruit-seedling model, grass-fruit-livestock.
针对宁夏南部退化山区农业发展中存在的主要问题,在总结试区多年工作经验的基础上,提出了适合于当地农村经济发展的4种生态农业模式,系统分析了各种生态农业模式的经济、社会和生态效益及其推广前景,为半干旱山区退耕还林还草和农业可持续发展提供科学依据与实践基础。
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From the point of view of geobotany, with the method of correlative factors of growth of plants, a countrywide theoretic ecological division was done for the introduction of Camptotheca acuminata and three kinds of areas of ecological preferent zone, ecological adaptive zone and ecological unadaptable zone were divided. With the theory of synecology, the characteristic on environment, constitution, life form spectrum, diversity, similarity of plots of communities were researched. Applying the method of species association, discrete distribution, indensity index, fractal geometry, etc. to research relations between the species of the communities, space distribution of Camptotheca acuminata, structure of age of Camptotheca acuminata, in different communities. Using the theories of autoecology, distibutons of seeds on land and growth of seedlings in vertical and horizontal directions, biomass of organ of Camptotheca acuminata were analyzed. On the opinions of conservation biology, the external and internal factors impressing Camptotheca acuminata were analyzed to research the mechanism of the endangered species, and with using of CTM Model, the future development direction of Camptotheca acuminata in different communities were forecasted, and. Standing on the position of resources ecology, discussing the regularity of camptothein in Camptotheca acuminata of different sites and seeding of different resources, also the the derive technics of camptothecin.
本文从地植物学的角度,运用植物生长相关因子法,对我国喜树资源的生态适宜区进行了划分,理论上确定了我国的喜树的引种栽培的最适生活区域、生态适宜区域和不适宜生活区域;从群落生态学的角度,对野生喜树所在的典型群落的群落环境、群落组成、群落生活型谱、群落的物种多样性特点、群落样地间相似性进行了研究;从种群生态学的角度,运用种间联结性、离散分布模型、聚集强度指数、分析几何等分析手段,对野生喜树所在典型群落间的种间关系、喜树的空间分布格局、年龄结构等进行了分析;从个体生态学的角度,对不同年龄组的喜树的种子的散落的垂直分布、水平分布、时间分布及种子发芽率和千里重等特点、不同种源的人工喜树苗期特点、喜树的高生长和茎生长特点、喜树的器官生物量特点进行了研究;从保护生物学的角度,对野生喜树的濒危的内部因素和外部因素进行了探讨,并运用CTM模型对不同群落中野生喜树的种群趋势进行了预测;从资源生态学的角度,对我国地理环境下喜树中喜树碱含量的地理分布规律、不同种源的喜树幼苗中喜树碱含量变化规律进行了研究,并对喜树碱的提取工艺进行了探讨。
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On one hand it reflects the theory of urban habitability, while on the other it is closely associated to the quality of life in urban living.
城市生态主义者S。韦德将"可持续发展"定义为一种提高人类与生态系统长期健康的发展模式。城市是与乡村相对应的一种地域单元
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The main results include:(1) Ecological economy and landscape ecology are merged and applied in sustainable development evaluation of Beijing mountainous region. The landscape measure of regional sustainable development is to build a model landscape with reasonable structure, efficient function and harmonic relationship of ecological system.
主要取得的研究结果:(1)提出了生态经济理论与景观生态理论相结合进行北京山区可持续发展评价,区域可持续发展的景观途径就是将人类活动对于景观演化的影响导入良性循环,建立一种由结构合理、功能高效、关系协调的生态系统组成的模式景观,以实现区域可持续发展。
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We have found that some natural ecosystem services value of Eucalyptus forest is less than that of montane rain forest by 85.82 million Yuan per year. And the decrease value is regarded as a part of natural input. Eucalyptus planting is a kind of mode to use natural resource, it will certainly bring much more economic and social services.
得出桉树人工林在自然生态服务功能方面比山地雨林降低的价值为0.8582亿元/年,我们认为其生态服务功能价值的降低是一种自然投入;发展桉树人工林是人类开发利用自然资源的一种方式,必然会产生强大的经济和社会服务功能。
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As a new tourism development style,ecotourism has the characteristics of combiningpopularization with specialization,primitivism with eco-culture,consumption with production,and educational function,etc.
生态旅游作为一种新的旅游发展方式,具有普及性和专业性、原始性和生态文化性、消费性和生产性、以及宣传教育等特点,其产生不仅在于适应了人们回归自然的需求,更在于迫切需要改变全球生态危机日益严重的形势。
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The CO2 uptake rate of plants is affected by the plant species and environmental conditions such as photosynthetically active radiation, temperature, water and nutrient contents. PAR is the most immediate environmental control on photosynthesis while air temperature affects both photorespiration and dark respiration. In the natural condition, PAR and temperature play an important role in net CO2 uptake. The effects of PAR and air temperature on the CO2 uptake of Pterocarpus macrocarpus grown in a natural habitat were studied in the present work. Due to many uncontrollable factors, a simple rectangular hyperbola could not represent the measured data. The data were divided into groups of 2℃ intervals; CO2 uptake in each group may then be related to PAR by a rectangular hyperbola function. Using the obtained functions, the effect of PAR was removed from the original data.
用涡度相关法对亚热带红壤丘陵区人工针叶林的二氧化碳、水、热通量进行了观测,重点分析了23m、39m两层高度的观测结果,同时把观测期分为春季和冬季两个不同时间段作了对比:结果表明,不管冬季还是春季,39m高度所测的总通量值和夜间通量值都要小于23m的观测值,这种通量差别表明:23m高度的观测结果更接近当地生态系统与大气之间的通量交换值,在此种生态类型条件下用涡度相关法测碳通量时,在23m、39m两层高度之间仍然存在大气平流现象;该试验区植被在冬季仍然可以进行光合作用,而且光合作用所吸收的CO2大于呼吸作用所排放的CO2,因此该种生态系统在冬季仍表现为碳汇;春季的碳通量值为冬季的2倍以上。
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According to several types of Eco-dikes, several methods of revetment is brought forward, and several important problems in the process of building Eco-dikes is discussed and summarized; and the rivers rich in nature is concluded and compared, and it introduce the method of building river rich in nature in detail too.
根据生态河堤的几种类型,提出了相应的几种护岸做法,并对生态河堤建设中产生的几个重要性问题进行了探讨与总结;对于多自然型河流,进行了归纳与比较,并且对多自然河流的建设方法也进行了详尽的介绍。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力