grassland habitat 中文意思是什麼
grassland habitat
解釋
草原生境-
The great bustard is polyphagia bird, but it feeds mainly on plants. the feeding field habitat selection relate with that whether the grassland burn or not last year. the important factors that determine the feeding field selection are the plant species, vegetative cover score. density hemerrocallis minor and the density of pedacularis sp. on burning grasslandsjthe density of vegetation. insects quanlity. plant species richness and the height of plant are the main factors that determine the feeding field selection on unburning grasslands
大鴇是雜食性鳥類，但以植物性食物為主。對于取食地的選擇往往跟草原上一年是否被火燒過有關。在火燒地，植物種類數、植被蓋度、小黃花菜密度和蒿密度是取食地選擇的重要因素；在非火燒地，植被密度、昆蟲數量、植物物種豐富度及植物高度在大鴇取食地選擇中發揮重要作用。 -
The author studied the influences on grassland bird communities caused by disturbance in the dagang forestry center in jilin province during the period from april to july in 2001 and 2002. the contents include : the influences on grassland bird communities structure caused by human activity in big scale ; the influences on grassland bird communities structure caused by grazing disturbance ; the influences for grassland bird communities structure caused by grazing disturbance ; the influences on grassland bird communities structure caused by habitat fragmentation. the main results are as follows : 1
作者於2001年和2002年4 7月，在吉林省鎮賚縣大崗林場進行了干擾對草原鳥類群落結構形成的影響研究，研究內容包括：大尺度范圍人類活動對鳥類群落組成的影響；放牧干擾對草原鳥類群落結構形成的影響；火燒對草原鳥類群落結構形成的影響；棲息地破碎化對草原鳥類群落結構形成的影響，主要結果如下： 1 -
To a certain extent, alpine grassland habitat of eastern qilian mountains was fragmented by frequent disturbance ( including grazing, reclamation, etc ), which resulted in an increase of the diversity and species replacement rate was rapid in the condition of moderate soil moist and sunlight time
放牧干擾（放牧、人為不合理開發）引起生境的逐漸破碎化，使樣方內微生境或資源異質性減小，樣方間異質性增大，土壤濕度和日照時間適中時物種替代速率較快，從而導致多樣性增加。 -
The changes of the length and the width of streets are reflected by the first axis of the two - dimensional ordination diagram of dca and the changes of the human disturbance and habitat types by the other one. using diversity indices, the analysis shows mat human disturbances and habitat types are influential factors for the street grassland type diversity
第一軸表示道路寬度和長度變化；第二軸反映綠地類別從路心池綠地類別向便道綠地類別變化以及生境由車輛干擾向行人干擾變化採用豐富度指數、多樣性指數和均勻度指數對城區街道植被的街道綠地類別多樣性的分析結果表明：街道綠地類別多樣性受到行人干擾、城區生境類型等因素不同程度的影響。
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