種種 all sorts of; all kinds of; a variety of 設置了種種障礙 put up all sorts of obstacles; 由于種種原因 for a variety of reasons; 用種種手段 by hook or by crook; resort to every means; resort to every trick; 凡此種種, 不一而足。 such instances are legion
種群 population◇種群平衡 population balance; 種群生態學 genecology; 種群調節 population regulation
物種 [生物學] species; speci-◇物種起源 origin of species; 物種起源學說 theory of origin of species; 物種形成 speciation; 物種學 speciology; 物種轉化 species transformation
It may be suggested that not all types of rarity have die same genetic implications from these results 這提示,并非所有的稀有物種種群具有一樣的遺傳含義。
There are very low genetic variation existing in the population due to bottleneck events and small effective population size 由于瓶頸效應和有效種群小,使得該物種種群遺傳多樣性貧乏。
Already resources are depleting , with the report showing that vertebrate species populations have declined by about one - third in the 33 years from 1970 to 2003 資源正逐漸被耗盡。報告顯示,從1970年到2003年的33年間,脊椎物種種群已經減少了近三分之一。
Considering the distribution of the species , the sizes and grounding patterns of stone are of critical importance , but the kinds of stone have n ' t any significance 對此物種種群分布來說石頭大小和著地樣式至關重要;但石頭種類,即石灰石還是花崗石,影響不大。
Furthermore , the study indicated that the genetic diversity of the natural population of reawnuria soongorica increased with the decreasing of the content of organic matter , water , total n and total p in soil , which had some relation with more potentiality of the genetic and variation of reawnuria soongorica in its long - term evolution to adapt worse environment 經分析表明,無葉假木賊種群與角果藜種群的shannon多樣性指數分別為0 . 1403和0 . 1615 ,基因分化系數( g _ ( st ) )為0 . 1469和0 . 1659 ,揭示了兩物種種群遺傳變異多存在于亞種群內,亞種群間的遺傳分化則不明顯。
And the populations of p . cicutarrifolia exhibit clumped distribution in zhejiang , hubei , jiangxi , anhui etc . furthermore , the population size is small , and its number is scare , and every population is n ' t dominant in its community , which resulted in their endangered state , for which habitat fragment and artificial damage are mainly responsible 安徽羽葉報春呈斑塊狀分布于安徽黃山、石臺、休寧、寧國、涇縣、歙縣、黟縣等南部山區,毛茛葉報春呈島嶼狀分布于浙江、安徽、湖北、江西等省。兩物種種群少且種群小,在群落中都不占優勢。
The competition among those species like s . tsinyunensis , dryopteris erythrosora and veronicastrum stenostachyum etc . , is intense in the communities , which may be one of the reasons why s . tsinyunensis is going to be endangered and with a very restricted distribution . the distribution patterns of the seven populations of s . tsinyunensis are clumped among the eight populations we studied , except population v of random distribution . the spatial pattern of 6 populations of s . tsinyunensis have high consistency with the negative binominal distribution , while another 2 populations , i . e . , i and iii are poisson distributions 6 )縉云黃芩各種群空間分布格局基本呈聚集分布,其中7個種群的分布格局類型是聚集分布,其聚集強度較高,另有一個種群為隨機分布;其種群的離散分布擬合結果也嚴格符合一定的數學模式,其中負二項分布、 poisson分布分別是該物種種群空間分布的理論分布模式,其中6個種群擬合出的結果是負二項分布,種群i和種群m擬合出的結果是poisson分布。