池塘生态系统能量流动的基本过程

PROCESS OF ENERGY CONVERSION IN POND ECO-SYSTEM

池塘是一个复杂的多通道能流系统，不能简单地用营养级将其组分进行划分。这种多通道结构在渔业生产上具有重要意义。当某一环节发生问题，可以通过其它渠道进行补救，不致使系统崩溃。在生长季节里鲢和鳙分别由碎屑同化的能量占各自总生产力的46％和63％，碎屑食物链在池塘鱼类生产上起着重要的作用，池塘的草牧食物链和碎屑食物链二者相互平行，相互转化。

Ponds are complex ecosystem of energy conversion, so we cannot classify it simply by the level of nutrition. The muhiple energy conversion linkages take very important role in the pro-duction of fishes. If some problems occur at one chain, that would not cause the system collaps, be-cause there are som other energy conversion ways. At the growing seasons, the energy of clastic of sil-ver carps and bigheads, clasic assimiation takes important role of fishery production, the food chains of grass and organic are equal and conversion.