種群恢復 的英文怎麼說

中文拼音 [zhǒngqúnhuīfù]
種群恢復 英文
repopulate
  • 種 : 種名詞（姓氏） a surname
  • 群 : Ⅰ名詞（聚在一起的人或物） crowd; group Ⅱ量詞（用於成群的人或物） group; herd; flock
  • 復 : Ⅰ形容詞1 （重復） repeated; double; duplicate 2 （繁復） complex; compound Ⅱ動詞1 （轉過去或轉過...
  1. Abstract : the main characters and seed set of bc1 ， bc2 ， bc1f2 from ms line back - crossing with the pollen of hybrid rice were studied. the appearance of a large number of self fertile plants in ms line was analyzed. the effect of introgression of restoring genes on ms line purity and hybrid yield in indica and japonica rice was discussed. it was pointed out that “ iso - cytoplasm restorer line ” was seriously reducing the purity of ms line and that hybrid rice was unsuitable for isolation zone in the seed production fields

    文摘:研究了雜交稻花粉對母本不育系回交後代群體bc1 、 bc2 、 bc1f2的主要農藝性狀和育性表現，分析了不育系中出現大量自交結實株的原因，討論了恢復基因滲入對秈、粳不育系純度和雜交稻產量的影響，指出「同質恢」對降低不育系純度的嚴重性和雜交稻作制種田隔離區的不合理性。
  2. Ripper recognized that resurgence of insect numbers was a common feature of post-spray populations.

    黎普認為昆蟲數量的恢復是噴藥后種群的普遍現象。
  3. In this paper two - generation reproduction toxicity of fenvalerate, a - cypermethrin, chlorpyrifos, and triazophos was tested in a 21d period with water flea, daphnia magna, . the toxicity indicator included longevity, body length, days to first brood, days to first pregnancy, number of youth per female, intrinsic rate of natural increase ( r ), and number of broods per female. accordingly, the dose - response relations and relations between the chronic responses and enzyme levels were investigated

    為了確定水蚤體內生化指標與慢性毒害效應之間的關系，特別是在低濃度暴露狀態下生化指標改變的生物學意義，以便能更準確預測早期農藥對水蚤種群的潛在危害，本文以浙江省常用殺蟲劑氰戊菊酯、高效氯氰菊酯、三唑磷和毒死蜱進行了大型蚤（ d . magna ）的急性和慢性毒性試驗（包括子代水蚤的恢復試驗） 。
  4. The giant pandas ' naturally slow breeding rate prevents a population from recovering quickly from illegal hunting, habitat loss, and other human - related causes of mortality

    大熊貓自然繁殖的比率很低限制了種群的快速恢復，來自非法獵取，產地損失，還有其他人為因素影響死亡率。
  5. Ecologic process of the wash lands by debris flows in mountain region is very complex and variety, and is a specific catastrophe - ecologic phenomenon in mountain region. plant growth of the wash lands of debris flow sdistributed in high altitude area shows a natural restorative proccss. it is found that plant growth process and community feature in the wash lands of debris flow can bring to light of the time of debris flow formation in the last hundred years and to the succession law of natural vegetation ecosystem through study in the catastrophc - ecologic phenomena and the ecologic process in wash lands of debris flow in the huangbenliu gully of the east slope of gongga mountain. the research result for this region also shows that study of the catastrophe - ecologic phenomena of debris flow can promote scientific infiltration between the ecology and the catastrophology, and has important theoretical and practical significances

    山區泥石流發生后的泥石流灘地呈現復雜多樣的生態過程，是山區所特有的一種災害生態現象.在人煙稀少的較高海拔，泥石流灘地植物生長表現為一種自然恢復過程.通過貢嘎山東坡高海拔黃崩溜溝泥石流灘地上發生的災害生態現象和過程的實地研究，發現泥石流灘地植物的生態過程和群落特徵，可以揭示近代泥石流的形成時間和自然植被生態系統的演替規律.研究表明，加強泥石災害生態現象的研究，可以促進災害學與生態學科的滲透，具有重要的理論和實踐意義
  6. With the increase of abandoned time, perennial plants increased, the function communities were richer, p diversity index in two communities reduced with abandoned interval, but the vegetation restoration was slow, the land abandoned for 30 years have not got to climax community

    隨撂荒年限的增加，多年生植物的種類和數量逐漸增加，植物群落功能群構成逐漸豐富，群落間多樣性指數隨撂荒時間間隔的增大而逐漸減小。但植被恢復緩慢，撂荒30年仍未達到頂極群落階段。
  7. V ) occupying space and covering ground should be served as the main strategy in early stage of vegetation restoration, which would enable the community coverage to rehabilitate rapidly. in mid - stage, due to the change of light environment and the species substitution, component adjustment should be chose as the main strategy

    5 ）植被恢復的策略是早期階段以搶占空間、覆蓋地面的對策為主，群落蓋度恢復很快;中期階段，林內光照環境改變，物種替代，恢復對策以物種組成成分的調整為主;後期則是生物量積累與組成結構調整並重。
  8. Based on detailed community study on the natural vegetation of jiangwan airport abandoned 17 years ago, floristic composition and structure character of the communities have been analyzed, in addition, the restoration process and potential of the communities were also illuminated

    以市區內江灣機場失去管理后出現的自然植被為研究對象，通過群落學調查研究，分析了群落的種類組成以及結構特徵，闡明了群落的恢復過程和潛力。
  9. The mechanism about seed actual reproduction and artificial restoration under disturbance was investigated by using systematic sampling in the typical area of reaumuria soongorica population at mid - young age in desert grassland region, according to two similar habitate involved five different disturbance characteristics

    摘要2003年7 10月，選擇黃土丘陵區荒漠草原地帶兩個相似生境、 5個不同干擾特徵的中幼齡紅砂種群更新恢復類型區為研究物件，採用系統取樣法或樣行法，開展了干擾條件下的紅砂種群種子更新與恢復機理的初步研究。
  10. Enclosing sandy - land merely without sand barriers ca n ' t lead to effective restoration of its vegetation. and in such sandy - land, the dominant plant species is still agriophyllum arenarium, and the coverage and the species richness are rather low

    只封禁多年但沒有設置沙障的流動沙丘，其植物群落的恢復效果很差，優勢種依然為沙米，並且群落蓋度和物種豐富度很低。
  11. Compared with straw - barriers or wooden barriers, clay - barriers may well be in favor of the settlement of plant species at first, in the long run, however, they will hold back the development of leymus secalimus population, so that it will take much longer time for the plant community to restore to its climax stage

    與草木沙障相比，粘土沙障設置初期可能有利於植物的定居；但是會對賴草種群的發育產生不良影響。所以，從長遠看來，粘土沙障不利於沙地植物群落的恢復。
  12. The results showed that the capability of reaumuria soongorica in seed actual reproduction and artificial restoration was positively correlated with disturbance levels ; the capability of restoration varied with the characteristics of disturbance factors, of which water was the key factor

    結果表明，紅砂種子更新恢復能力與干擾水準呈正相關；干擾因數的特徵不同，則更新恢復能力不同；尤其水分因數參與對紅砂種群的自然更新與人工輔助恢復起著關鍵性的作用。
  13. Dynamics of species diversity of communities in restoration processes in horqin sandy land

    科爾沁沙地植被恢復系列上群落演替與物種多樣性的恢復動態
  14. A preliminary study on the species composition, ecological characteristics and present distribution of vegetations in mengyang area, the largest part of xishuangbanna nature reserve, shows that there are 7 vegetation types, 15 formations, 24 community types in this area. the vegetation map was made by using gis software ( arc / info ), and the area and distribution pattern of each community was obtained. the subtropical monsoon evergreen broad leaved forest occupies the largest part, with an area of 41. 26 % of the whole, and the tropical rain forest occupies less than 10 % of the whole area. according to the topography, altitude, climate characters and present distribution of the vegetation, and based on the landscape type map, an original vegetation map under natural conditions was obtained, which could provid a theory for the vegetation restoration, especially for the tropical rain forest and its habitat, and for the development of the nature reserve

    對西雙版納勐養自然保護區植被的類型進行了劃分，包括人工和自然群落，共有7個大類、 15個群系、 24個群落類型分佈.對每個類型的主要組成種類、生態特徵和分佈現狀進行了初步研究.利用地理信息系統軟體制取植被圖並獲得了各種植被類型的分佈面積和分佈格局特徵，這一地區亞熱帶季風常綠闊葉林的分佈面積和所佔比例最大，達總面積的41 . 26 % ;而熱帶雨林面積不超過總面積的10 % .依據地形、海拔、氣候和現狀植被分佈的規律，在獲得景觀類型圖的基礎上，得到了可以反映這一地區在完全自然條件下植被可能分佈的狀況的還原植被圖，為保護區的發展和植被的恢復提供了理論依據。
  15. Both have been on the verge of extinction due to poaching and habitat fragmentation. in order to enlarge the population size and recover the wild populations, ex situ conservation strategy has been advocated by the governing agents in china through natural or artificial breeding in captivity

    為了拯救此二物種，我國政府主管部門相繼制定了人工易地保護的物種保護策略，以期通過人工圈養條件下的自然繁殖和人工繁殖，達到增加種群的數量，促進野生種群恢復之目的。
  16. The results indicated that as the intensity of sward cleavage increased, elymus nutans and other plants that had high requirements in soil aeration and resource space presented an increased competitive edge and the species that had low requirements in soil aeration and resource space presented an opposite picture ; low - intensity sward cleavage could help increase species diversity to a certain extent, but the diversity index appeared to decline as a whole as the cleavage intensity increased ; the effects of sward cleavage on functional groups of the vegetations showed in such manner as e. nutans - represented grasses increased in their composition with the intensity of sward cleavage raised, and sedges and forbs decreased in their compositions with the intensity of sward cleavage raised ; sward cleavage showed a significant improving effect on primary productivity of the meadows and was capable of increasing the proportion of quality - grass biomass to the total plant biomass ; sward cleavage could be independently employed as an effective measure to rehabilitate and improve alpine - meadow grasslands and thus played a basic and key role in the technical combination aiming at establishing hay fields characterized by e. nutans

    結果表明：垂穗披堿草等對土壤通透性和資源空間要求較高的物種，競爭力隨劃破強度的增加而上升，而對土壤通透性和資源空間要求相對較低的物種則相反；輕度劃破干擾對提高物種豐富度具有一定的促進作用，但多樣性指數則總體上表現為隨劃破強度的增加而呈下降的趨勢；劃破干擾對植被功能群的影響表現為以垂穗披堿草為代表的禾草類組分隨干擾強度的增加而顯著上升，莎草類和雜類草組分隨干擾強度的增加而顯著下降；劃破干擾對草地初級生產力的提升具有顯著的促進作用，且可顯著增加植物總量中優質牧草的比重；劃破干擾可獨立作為高寒草甸類草地恢復與改良的有效措施，在定向培育垂穗披堿草型割草場的技術組合中具有核心和基礎性的地位。
  17. But there still are some kinds of native xeroph - ytia which have distributed naturally during the long term process of adapta - tion and evolution in arid region. needless to say, it is the most key step to promote the vegetation restoration in desertification area by ascertaining the controlling factor of the natural distribution and observing the adaptation law of the plant living in arid area

    由於水資源的匱乏，乾旱區與濕潤區相比，生物多樣性受到嚴重抑制，但在長期的適應演化過程中，此區亦分佈著種類不乏的旱生植物群落，洞察現存各類植物對環境的適應規律，顯然是促進荒漠區植被恢復的重要環節。
  18. The conservation of ecosystems and natural habitats and the maintenance and recovery of viable populations of species in their natural surroundings and, in the case of domesticated or cultivated species, in the surroundings where they have developed their distinctive properties

    是指保育生態系和自然生境以及維持和恢復物種在其自然環境中有生存力的族群；對于馴化和栽培物種而言，是指它們在其中發展出其明顯特性的環境之保育。
  19. On the basis of substituting space for time, communities dynamic characteristics including composition and structure, species diversity, population niche, soil nutrient content were investigated

    本文採用以「空間代替時間」的方法對各個恢復階段植被群落的動態特徵，包括：物種組成結構、物種多樣性、種群生態位、土壤營養元素含量變化的特徵進行了研究。
  20. The author tentatively explored the suitable fishing condition for the models to stock assessment. to make reasonable estimation biologically, the fishery population must experience over explored stage and stock recovery stage

    作者初步探討了剩餘產量模型作出合理評估的漁業條件，認為漁業種群必需經歷過度捕撈和種群恢復階段是剩餘產量模型正確評估種群資源所需的漁業條件。
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