Previous researchers have always determined the sp atial distribution patterns ( sdp ) of castanopsis kawakamii with a sample - dis tance method. however, the distribution patterns may be affected by the quadrat si ze and, in the course of analysis, the density differences among the cluster plots are not considered ; therefore, differences of cluster plot size and the dispersi on degree among individuals of cluster plots can not be known. authers of this pa per have determined the spatial distribution patterns of castanopsis kawakamii population in different habitats by means of non - quadrat distance method and a nalysed the pattern intensity and grain of the sdp. the pattern intensity is defi ned with the relative density differences and the pattern grain can embody the d ispersion degree of the individuals in the plots, and the dispersion degree among the plots. the determined results are as follows. the intensities of the species range in order from strong to week : litsea mollifolia p. kawakamii i. purpure a r. cochinchinensis c. kawakamii c. carlessii d. oldphamii s. superba. the gra ins of the species queue in order from coarse to close : s. superba = litsea mollif olia r. cohinchinensis c. kawakamii = i. purpurea c. carlessii p. racemosam d. oldp hamii. these determined results tally basiclly with the results authers of this paper have got in determining the same plots by means of aggregate index access ing method. in view of this, it is held that the sdp of c. kawakamii is closely related to the habitats and biological features
前人都是採用樣方方法對格氏栲種群數量的空間格局進行測定,而格局分佈有可能受樣方大小的影響,且分析過程中沒有涉及聚塊間密
度差的問題,因而無法掌握種群的聚塊大小差別及聚塊內個體間的離散程
度.本研究採用無樣方距離法,測定不同生境的格氏栲種群空間格局,分析格氏栲種群格局的強
度和紋理.強
度以聚塊和間隙的密
度差來定義,紋理則是體現聚塊內個體間的離散程
度與諸聚塊間的分離程
度.測定結果表明,格氏栲種群格局強
度從高到低排列次序為:木姜子蚊母樹冬青茜草樹格氏栲米櫧
虎皮楠木荷;格局紋理從粗到細的順序是:木荷=木姜子茜草樹格氏栲=冬青米櫧蚊母樹
虎皮楠.這一測定結果與作者採用聚集
度指標測定相同樣地格氏栲種群空間格局的結果基本相符.因此,格氏栲空間格局類型及分佈與格氏栲生物學特性及生境的關系密切
Slipshod assistance, foolish inattention, dowdy indifference, and half - hearted work seem the rule ; and no man succeeds, unless by hook or crook or threat he force or bribes other men to assist him ; or mayhap, god in his goodness performs a miracle, and sends him an angle of light for an assistant
懶懶散散、漠不關心、馬馬
虎虎、敷衍了事的工作態
度,似乎已經成為許多人的常態,除非苦口婆心或威逼利誘使勁渾身解數叫下屬幫忙,又或者除非奇跡出現,上帝仁慈地賜給他一名得力助手,否則,它只能空嘆無能為力。
Spears has topped the annual yahoo ! list for six of the past seven years, only losing out once - - in 2004 - - to her friend and fellow party girl paris hilton
在過去七年中, 「小甜甜」六次奪得雅
虎年
度搜索榜冠軍,僅在2004年讓位於她的好友、派對女郎帕麗斯?希爾頓。
Careless fellow as i am, i am not so indifferent, mrs. bounderby, as to be regardless of this vice in your brother, or inclined to consider it a venial offence.
我雖然是個馬馬
虎虎的人,龐得貝太太,但是不至於漠不關心到那種程
度,竟注意不到令弟的這種壞處,認為那是一種輕微可以饒恕的過錯。
And the viviparous plantlets of both species are formed for the differentiation of floral primodium, but the position if viviparous plantlets is different. for the species of polygonum viviparum l., the viviparous plantlets are formed in the inflorences, while in saxifraga cernua l are in the leaf axils. on the results of observation for morphology and anatomy, vascular bundles of viviparous plantlet are connected with that of their parent
從來源和性質看,二者的胎生苗均由花原基直接分化形成;但從位置上看,珠芽蓼在花序中形成胎生苗,而珍珠
虎耳草則在地上莖的葉腋部位形成胎生苗;從形態解剖角
度觀察,胎生苗的維管束與母體的維管束直接相連,胎生苗脫落時,其上已長出葉片1 - 3枚。
Grizzly bear wrangler jeff watson and wildlife vet ellen rogers reveal the fundamental differences between the siberian tiger and the brown bear, two ferocious predators
今集《猛獸擂臺》中,兩位學者為灰棕熊與西伯利亞
虎的兇悍程
度進行辯論,彼此都有各自的見解。
The area is known for its wide range of fauna, including 260 bird species, the bengal tiger and other threatened species such as the estuarine crocodile and the indian python
該地區因動物物種多樣性而聞名於世,其中包括260多種鳥類,孟加拉虎和多種珍稀瀕危物種(如灣鱷和印度蟒蛇等) 。