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breeding bird     
相关语句
  种鸡
     Key techniques for increasing artificial insemination rate of breeding bird
     提高种鸡人工授精率的关键技术
短句来源
     These indexes are advanced levels in China at present and suit to the world levels in the late of 1970's establishment for Jilin White Layer breeding system started in 1983. There are 100,000 breeding bird and Put 1.000,000 commercial layers and parent flock up for saie. 23% Economic efficiency was raised.
     吉林白鸡良种繁育体系建立,始于1983年,累计饲养种鸡10万只,推广父母代和商品代鉴别鸡雏100万只,增产幅度、经济效益提高23%。
短句来源
  种禽
     This paper summarized the effects of four factors such as breeding bird's healthy state, egg quality,retention and disinfection on the hatchability and pointed out the corresponding measures of raising hatch rate.
     从种禽健康状况、种蛋品质、种蛋保存与消毒四方面对种蛋孵化率的影响进行了综述,并指出了提高孵化率的相应措施。
短句来源
  繁殖鸟类
     Structure of Breeding Bird Communities in Lower Mountain Belt of Mount West Tianmu
     西天目山低山带繁殖鸟类群落结构
短句来源
     and 2) anthropological disturbance was the major factor influencing the species diversity of the breeding bird communities at all elevations. Intensive anthropological disturbance would result in a lower diversity.
     2)人类干扰是影响各海拔段繁殖鸟类群落物种多样性的主要因素,人类干扰越强烈,鸟类群落物种多样性越低.
短句来源
     the influence of vegetation structure on breeding bird community organization;
     植被结构对繁殖鸟类群落结构形成的影响;
短句来源
     the influence of artificial nest boxes on breeding bird community structure.
     人工巢箱对繁殖鸟类群落结构的影响。
短句来源
     Species Diversity of Breeding Bird Communities at Different Elevations in Chongqing Section of the Three Gorges Reservoir Region
     重庆库区不同海拔段繁殖鸟类群落的物种多样性
短句来源
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  繁殖鸟
     New record of breeding bird in Jilin province-Pallas' Sand Grous
     吉林省繁殖鸟新记录——毛腿沙鸡
短句来源
     THE STRUCTURE OF BREEDING BIRD COMMUNITIES IN THE SECONDARY FOREST AT CHANGBAI MOUNTAIN *
     长白山次生林繁殖鸟的群落结构
短句来源
     This paper studied the structure of breeding bird communities in the secondary forest at Changbai Mountain.
     研究了长白山次生林繁殖鸟的群落结构及其与森林植被的关系。
短句来源

 

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      breeding bird
    Breeding bird communities in Berlin were investigated at five study sites, which represent an structural urban-rural gradient, from densely built-up areas with sealed ground to green areas such as large parks.
          
    Analysis of breeding bird communities along an urban-rural gradient in Berlin, Germany, by Hasse Diagram Technique
          
    These results suggest that the quantity, structure, and pattern of forested habitat affected breeding bird diversity in urbanizing landscapes.
          
    Thirteen Breeding Bird Survey routes, each with 40 to 50 point counts, were used to quantify species richness across the gradient of urbanization extending from downtown areas of Columbus, GA to natural woodlands.
          
    Occurrences of breeding bird species in 54 urban parks were investigated in the city of Oulu in northern Finland.
          
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    In order to study the variations of Avifauna components after the cultivation of the natural tropical rain-forest and seasonal rain-forest in May-July 1983, the writets investigated and collected the birds species at Meng hai, Meng yang and Meng la of Xishuangbanna, Yunnan Province. During this survey we recorded 89 species of breeding birds (12 are summer visitors, 77 residents), belonging to 67 genera, 32 families and 4 subfamilies, 12 orders.

    1983年5—7月,作者对云南省西双版纳的勐海、勐养和勐腊三个地区的茶林和橡胶林区的鸟类区系组成情况进行了调查,其结果若与开发前(郑作新、郑宝赉,1961,1962;A.И.伊万诺夫,1961)的记录对照,在季节时间上有所不同,但该地区的热带雨林和季雨林被开垦种植为茶林、橡胶林及其它经济作物之后,反映出各林区现在的繁殖鸟种类减少很多,鸟类区系组成情况有显著的变化。

    226 species and 8 subspecies of birds have been collected from Chengdu by Sichuan University and Chengdu Zoo since 1954. In addition, there are 6 species from reports of other authors. Therefore, the total number of birds in Chengdu has come to 232 species ane 8 subspecies.Among the species and subspecies, there are 46 residents, 34 summer visitors, 81 winter visitors and 79 migrants.Here, most of the breeding birds are common to farmland. The birds in winter are more abundant and complex...

    226 species and 8 subspecies of birds have been collected from Chengdu by Sichuan University and Chengdu Zoo since 1954. In addition, there are 6 species from reports of other authors. Therefore, the total number of birds in Chengdu has come to 232 species ane 8 subspecies.Among the species and subspecies, there are 46 residents, 34 summer visitors, 81 winter visitors and 79 migrants.Here, most of the breeding birds are common to farmland. The birds in winter are more abundant and complex than those in summer. The seasonal composition of birds has more resemblance to that of southern China.Analysing 80 breeding species from the above mentioned, the Oriental elements occupy 67.5%, and only 16.3% to the Palaeartic. Many Oriental breeding species and subspecies here are the same with Southeastern China. The eccology of birds in this avifauna are chiefly marked to prefer a warm condition.From the above results and from the material of historical geology, palaeontology, palae-oclimatology, we consider that this avifauna chiefly derived its origin from Southeastern China.

    将成市都郊232种鸟类和其他地区鸟类进行比较,结果表明成都鸟类区系的特点是:季节组成与我国南方相似较多,农田鸟类较多,东洋界区系成分较多,与东南中国共同的种类较多.再从地史、古生物和古气候资料,分析本地与东南中国鸟类区系更加一致的原因,推定成都鸟类区系起源于中国东南部.

    The investigations of the vertical distribution of birds in Tianzhu ar-ea of Gansu province have been carried out from March to December,1965,from April to May,1966,and in October,1981.The results obtainedwere reporteb in this paper.There are 103 species birds in the Tianzhu area,in which 73 speciesare breeding birds.They belong to 10 orders,26 families and 61 genera se-parately.The Tianzhu area can be vertically divided into five zones:river bea-ch meadow,shrub meadow,subalpine meadow,azalea...

    The investigations of the vertical distribution of birds in Tianzhu ar-ea of Gansu province have been carried out from March to December,1965,from April to May,1966,and in October,1981.The results obtainedwere reporteb in this paper.There are 103 species birds in the Tianzhu area,in which 73 speciesare breeding birds.They belong to 10 orders,26 families and 61 genera se-parately.The Tianzhu area can be vertically divided into five zones:river bea-ch meadow,shrub meadow,subalpine meadow,azalea bush and montanerock zones.There are 66 apecies in the river beachmeadow zone which isthe most abundant in the number of species,34 species among them arebreeding birds.33 species birds have been obtained in the azalea-bush zonethat is the mostpoor in the number of species,only 4 species are breedingbirds.The representative species of each zone are summarized as follows:Ci -eonia nigra,Anas c.crecca,Charadrius a.alexandrinu and Eremophla alp-estris khanensis are the representative speeies of river-beach-meadow zone(altitube 2,800-3,000m.);Perdix hodgsoniae sifanica,Parus supercilious,phylloscopus i.inornatus,Carduelis flavirostris montanella and Uroc ynchrmuspylzowi are the representative species of the shrub meadow zone (altitude3,000-3,700m);Colnmba leuconota,Columba rupestris turkestanica Athene no-ctua impasta,Alauda arvensis and Pyrrhocorax p.himalayanus are the represen-tative species of the subalpine meadow zone,(altitude 3,600-3,900m.);Turdus kessleri and Carpododacus thura dubius are the representative species ofthe azalea bush bush zone(altitude 3,400 3,800.) Tetraogallus tibetanusprzewalskii,Prunella collaris tibetana are tne representauive species of themontane rock zone(altitude 3,8004-300m,).The food compositions of 98 species birds have been analysed,tbomostof which is beneficial birds.

    从1965年3~12月末.1966年4~5月和1981年10月,我们曾在天祝地区进行了鸟类垂直分布研究.共获得103种鸟,其中有73种在这里繁殖。全部鸟类分属于61属,26科和10目.在天祝地区可划分为5个垂直带:河漫滩草甸、灌丛草原、亚高山草甸、杜鹃灌丛和高山裸岩带。河漫滩草甸带的鸟类最丰富,有66种鸟,其中有34种在这里繁殖.鸟类最贫乏的是杜鹃灌丛,仅获得31种,营巢的鸟类仅4种.每个带的代表种是:河漫滩草甸带(2800~3000M)有黑鹳、绿翅鸭、环颈鸻、角百灵;灌丛草原带(3000~3700M)有高原山鹑、 白眉山雀、黄眉柳莺、 黄嘴朱顶雀、朱鹀;亚高山草甸带(3600~3900M)有雪鸽、岩鸽、纵纹腹小鸮、云雀、红嘴山鸦;杜鹃灌丛带(3400~3800M)有棕背鸫、白眉朱雀;高山裸岩带(3900~4300M)有藏雪鸡、领岩鹨。我们还进行了该地区的98种鸟类的食性组成分析.大多数鸟类对天祝地区是有益的。

     
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