类群变化,abundance variations
1)abundance variations类群变化
2)community change群落变化
英文短句/例句

1.Study on the variation of zooplankton community in the Pearl River Estuary in 2005~20062005~2006年珠江口浮游动物群落变化研究
2.The Research on the Dynamics of Insect Community in Free-pollutant Apple Orchard;无公害栽培苹果园昆虫群落变化动态研究
3.Dynamics of Petroleum-degrading Bacterial Community with Biodegradation of Petroleum Contamination in Seawater石油污染海水中细菌群落的动态变化
4.Spatiotemporal changes of fish community in Yangtze estuary intertidal zone长江河口潮间带鱼类群落的时空变化
5.Succession of forest community is characterized by the changes in community organization.【中英文摘要】森林群落的演替是以群落结构的变化为表现特征的。
6.Relationship between plant community succession and fertility variation of mountain yellow soil in east Chongqing.渝东山地黄壤肥力变化与植物群落演替的关系
7.Variations in Fish Community Structure and Biodiversity in the Northern East China Sea;东海北部鱼类群落多样性和结构特征变化研究
8.The Change of Plankton Community during River Ecosystem Restoration in Suzhou Creek;苏州河生态恢复过程中浮游生物群落动态变化
9.Studies on the Variation of Periphytic Algal Communties and Biomass in Jinyang Lake;晋阳湖周丛藻类群落结构和生物量变化的研究
10.Analysis of Microbes Community s Structure Spatial Changes in Contaminated River;污染河流中微生物群落结构的空间变化解析
11.Study on the Change Structure of Phytoplankton Community and Water Quality Evaluation in Dishui Lake滴水湖浮游植物群落结构变化及其水质评价
12.Research on changes of fish community structure in Jiangsu coastal zone江苏近岸海域鱼类群落结构的变化研究
13.Avian Communities and Their Seasonal Dynamics in Parks in Shanghai City上海城区公园绿地鸟类群落结构及其季节变化
14.Changes in Community Biomass along Snow-melting Gradient in Alpine Meadow高山草甸群落生物量在融雪梯度上的变化
15.Compositions and Dynamics of Weed Communities in Leafy Vegetable Fields in Guangzhou City广州市叶菜田杂草群落组成及其年动态变化
16.Characteristics of Vegetation Community of Fencing Sandy Land in Arid Desert Area干旱荒漠区封育沙地植被群落特征变化研究
17.Microbial Community Changes in Reed Constructed Wetland in Different Seasons景观人工湿地微生物群落结构的季节变化
18.Comparation of Negative Air Ion Concentration and Daily Variation of 2 Kind of Plant Communities2种植物群落空气负离子浓度及日变化的比较
相关短句/例句

community change群落变化
3)population dynamics种群变化
1.Study on the population dynamics of rice stem borers and its main impact factors in Zhongjiang county中江县水稻螟虫种群变化及其主要影响因子分析
4)the colony changing群体变化
5)algae change藻类变化
6)change of variety种类变化
延伸阅读

气候要素日变化和年变化气候要素日变化和年变化diurnal variation and annual variation of climatic elements  q ihou yaosu ribianhua hen一anb一anhua气候要素日变化和年变化(diurnal varia-tion and annual variation of elimatieelements)由地球自转和公转所引起的以l」、年为周期的气候要素变化。 日变化以气温为例,其日变化与地面加热状况直接有关,最高值在14一15时出现,最低值在日出前后测点的纬度、海拔高度、下垫面条件、季节以及人气干湿状况都可影响气温日变化,但不改变其主要性质)干旱地区夏季的气温日变化最显著,日较差(最高温度与最低温度之差)最大。气温日较差人小对农作物生长有收要意义,是农业气候分析的项目之一水汽压的日变化决定于地面加热条件、地面湿润状沉和湍流交换强弱。在充分湿润的地区和季节.水汽压最高值是午后最大,玄青晨最小,在其它地区,水汽压日变化曲线人多旱双峰型,两个高值分别出现在9时和「1落前后,两个低值发生在日出前和午后〔如图所示、风速日变化上要取决于近地层中湍流交换的日变化,11间因湍流加强,地面风速也增大,午后风速达最大值,夜间风速最小。沿海的海陆风现象及山区山谷风现象也属风的日变化,它们的速度和方向均有周日变化。 年变化气候要素年变化与太阳辐射年变化有关最明显的是气温年变化,在北回归线以北的北半球大陆上,l月气温最低,7月最高,气温年变曲线比之天文辐射年变曲线约有一个月的位相落后。在海洋l比日︸1 一一 。dq\汉俐田仁书5言 1 2 16时间/h20 24水气压的日变化上气温年变曲线的位相落后更多。从各地气温年变化特点就可看出海陆影响的程度(见大陆度)。降水的年变化也很明显,中国东部地区因受季风影响,夏季6一8月降水最多,冬季最少,干湿季竹交替明显地中海沿岸降水年变化具有冬季降水充沛,夏季少雨的特点,形成特殊的地中海气候。在英lfil各地,全年各月降水墩分配相当均匀,年变化较小,反映出典型的海洋性气候相对湿度的年变化与气温年变化相反,一般是夏季小冬季人。气温、降水、相对湿度等要素年变曲线的配置特点,可反映出各地气候的特点 (翁笃鸣)