quantitative variation中文
數量變異
- quantitative: adj. 【數學】量的；定量的。 t ...
- variation: n. 1.變化，變動。 2.變量，變 ...
- variation with: 隨而變化
例句與用法
- Continuous variation ( quantitative variation ; multifactorial inheritance ) a form of variation in which the characters show continuous variation within a certain range of values
連續變異：變異的一種類型，其性狀在一定的范圍內是連續變化的。 - There exists seasonal variation in the number of the species . judging from either all species of birds or that of warterbirds , the most important reason of seasonal and quantitative variation in every species lies in annual variation of the migratory birds
衡水湖鳥類種數存在季節變化，無論是從鳥的所有種類看，還是從水鳥的種類看，鳥類物種數量季節變化的最重要原因是遷徙鳥類的周年變化。 - The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity . the bigger the seeds of the species and the earlier or later the seeds of the species matured , the higher the proportion of the seed rain damaged by animals . the quantitative variation of seed rain , active seed rain and seed bank did not take place at the same time . at early time , the number of seed banks of castanopsis fargesii , lithocarpus glabra , quercus myrsinrefolia , castanopsis plasyacantha , cinamomum subavenium . which own more active seed rain increased by geomitric series . the seed banks of castanopsis orthacantha and schima argentea were small , only survived a short time , and did not sprout next year . the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals , dying speed of seeds and their resistance to pathogens and adverse circumstances , and the state of seed germination
對重慶四面山常綠闊葉林建群種種子雨、種子庫的研究表明,建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種,其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的數量變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等,其種子庫密度在早期以近幾何級數的方式增長,元江栲、銀木荷種子庫小,存在時間短,翌年無一年生萌發苗;種子庫數量動態、消減率動態決定于種子被取食的強度、種子衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性
