trophic level 中文意思是什麼
trophic level
解釋
食性層次-
Producer the first trophic level, in a food chain
生產者：食物鏈中第一個營養級。 -
The next best way to quantify the amount of protoplasm in each trophic level is to weigh it.
確定每一個營養階層原生質總量的第二個好辦法是稱重。 -
These microscopic organisms are assigned a trophic level ( tl ) of 1
這些微生物的營養級為1 。 -
Pyramid of biomass a type of ecological pyramid based on the total amount of living material at each trophic level in the community, which is normally measured by total dry weight or calorific value per unit area or volume, and shown diagrammatically
生物量金字塔：指基於群落每個營養水平上有生命的物質總量的一種生態金字塔類型，通常通過總干重或者每單位面積或體積的生熱量值來衡量，並用圖表表示出來。 -
Protozoan community character in relation to trophic level in the beijing section of the juma river
拒馬河北京段原生動物群落特徵及其對河流營養狀況的指示 -
Birds are positioned at high trophic level within the food web in the ecosystem, and thus any changes within the system can affect the birds in one way or another
鳥類在生態系統中處于較高的營養級，生態系統中住何一個環節的變化都可能對鳥類造成一定的影響。
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