棲息密度 的英文怎麼說
中文拼音 [qīxīmìdù]
棲息密度
英文
population density-
The housing department has also taken a series of specific measures to reduce the nuisances caused by wild house crows in public housing estates. these include trimming overgrown trees, washing the open spaces vulnerable to the stay of the wild birds on a frequent basis, as well as playing sound devices and deployment of security guards to frighten away the wild birds by pointing torch at trees or using other methods of illumination
為減少野生烏鴉在公共屋?內造成的滋擾，房屋署亦已採取一系列具體措施，包括修剪過度茂密的樹木、經常清洗吸引野生雀鳥棲息的空地、播放聲帶，以及派遣護衛員使用電筒照射樹木或使用其他照明方法嚇走野生雀鳥。After spraying the herbicide, the results with time show that no obvious quantitative difference occurred in benthic species composition, biomass, inhabit density and the coherent variation trend between experimental zone and controlled zone
藥物噴灑后不同時段調查結果表明：試驗區與對照區的底棲生物種類組成、生物量、棲息密度同步對比數量相差不明顯，其隨時間變化的趨勢亦呈現總體一致。Based upon the analysis of the data obtained during the survey, it can be concluded that : 1 ) the number of biomass of macrobenthos in the yellow sea and the east china sea in autuma is higher than that in spring, while the number of density of macrobenthos in autumn is lower than that in spring ; 2 ) the number of biomass of macrobenthos in the yellow sea is higher than that in the east china sea ; 3 ) the number of species in the yellow sea is lower than that in the east china sea ; 4 ) one of the characteristics of distribution of macrobenthos in the east china sea is that the species richness increased from the coastal waters to the offshore deep waters, from the north to the south. 5 ) the species composition in the deeper part occupied by the cold water mass of the yellow sea is more stable than that in the coastal part of the yellow sea in the late 40 ~ 50 years
通過以上幾方面的分析，結果表明： 1 ）黃東海調查海域的秋季總生物量均高於春季，總棲息密度則低於早春季； 2 ）黃東海春季生物多樣性指數高於秋季； 3 ）南黃海、東海的水文特點顯著不同：東海底溫顯著高於南黃海底溫，東海底鹽亦高於南黃海底鹽； 4 ）南黃海春秋季生物量分佈無一致規律，東海春秋季生物量除長江口外基本上自近岸向外海逐步降低； 5 ）東海大陸架大型底棲動物的種類組成較南黃海更豐富； 6 ）東海大型底棲動物的分佈特點之一為：種類數由北向南、由近岸（西部）向外海（東部）逐漸增多； 7 ）在黃海冷水團控制的海域，其底棲動物種類組成較近岸海域穩定； 8 ）幾個生物多樣性指數各有側重，都能較好地反映底棲動物的分佈特點In cradle while cut down divides low - grade forest, notice to do authority of nice area branch and low layer vegetation clear the job, can reduce rat already kind concealment place, destroy mouse kind live condition, reduce rat kind density, can reduce miscellaneous bush to wait again at the same time right young forest competition, those who be helpful for forest is hale grow and shift to an earlier date closing cheng lin, the forest land after yu ren is shut goes against rat kind habitat, can rise to control rat to feel the effect that produces greatly
在撫育伐除劣等林木的同時，注重做好地面枝權及低層植被的清理工作，既可減少鼠類的隱蔽場所，破壞鼠類生存條件、降低鼠類密度，同時又能減少雜灌木等對幼林的競爭，有利於林木的健壯生長和提前郁閉成林，郁人閉后的林地不利於鼠類棲息，可以起到控制鼠害大發生的作用。The habitats for moving about of great bustard are hillocks on grassland. and they prefer to move about on the valleies of grassland during their breeding season. there are 4 main vegetation characteristic factors that determine the nest - site selection, the factors are the vegetation canopy, vegetation density, food and the height of plant. the great bustard selects the areas with higher vegetation canopy, vegetation density, plant species and insect quantity. most height of plants are below 20cm, but we also found they move about in tall grass occasionally
大鴇繁殖期活動棲息地為波狀起伏的草原漫崗地，多喜歡活動在海拔為170 300m左右，四周高、中間凹的漫崗凹地中。決定大鴇繁殖期棲息地選擇的主要植被特徵因子共有4個，分別為植被蓋度因子、植被密度因子、食物因子和植物高度因子。大鴇多選擇在植被蓋度和密度較大、植物種類和昆蟲數量較多及多數植物高度在20cm以下，但又不乏高草的地方活動。The density of living creatures is higher than in any other habitat on earth
河口的生物密度比地球上任何其他棲息地的密度都要大。Otherwise known as costa rica s cocos island, this underwater mountain - an island of the sharks - is a migratory gathering place for a dazzling array of sea creatures including sharks, manta rays, sea turtles and dolphins
因為這里是不少海洋生物的棲息地，充斥著鯊魚魔鬼魚海和海豚，這里可能是全球鯊魚聚居密度最高的海域，故又稱為鯊魚島。分享友人