翻譯

53-3-5

AS we have seen ,producers are the source of all nutrients or food in an ecosystem for themselves and for consumer organisms. only the biomass represented by NPP is available as nutrients for consumers ,and they use only a portion of this amount.thus, the planet's npp ultimately limits the number of consumers that can survive on the earth. this is an important lesson from nature.
生產者是他們自己和消費者有機體在生態所有營養物食物的來源。只有生物量已NPP描述做為消費者可利用的營養物並且他們只使用這部份。因此行星上的NPP最後能限制在地球上存活消費者的數量。這是從自然中學到一個重要的課。